Bảng mã lỗi máy CNC Fanuc – nguyên nhân, cách sửa chữa

Máy CNC Fanuc là dòng máy của nhật bản được dùng khá phổ biến ở Việt Nam mà đa số là máy cũ đã qua sử dụng 1 thời gian lâu nên việc dựa vào các bảng mã lỗi để phục vụ công việc bảo trì, sửa chữa là rất cần thiết. Dưới đây là bản mã lỗi CNC Fanuc các đời từ thấp đến cao:

Màn hình máy CNC báo lỗi 414 Servo Alarm
Màn hình máy CNC báo lỗi 414 Servo Alarm

Bảng mã lỗi bộ điều khiển Fanuc series 0

Alarm Code Description of Alarm/Error
??? BP/S alarm is produced with the same number as P/S alarm taking place in normal program editing. (070, 071, 072, 073, 074 etc)
140 An attempt was made to select or delete a program being selected in the foreground.

Program P/S Alarms

Alarm Code Description of Alarm/Error
000 A parameter which requires the power off was input, turn off power.
001 TH alarm ( A character with incorrect parity was input. Correct the tape.
002 TV alarm ( The number if characters in a block is odd). This alarm will be generated only when the TV check is effective. Correct the tape.
003 Data exceeding the maximum allowable number of digits was input. (Refer to the item of max.programmable dimensions)
004 A numeral of the sign “-” was input without an address at the beginning of a block.
005 The address was not followed by the appropriate data but was not followed by another address or EOB code.
006 Sign “-” input error ( Sign “-” was input after an address with which it cannot be used. Or two or more “-” signs were input)
007  Decimal point “-” input error.
009  Unusable character was input insignificant area.
010 An unusable G code was commanded.
011 Feedrate was not commanded to a cutting feed or the feedrate was inadequate.
014 In variable lead threading the lead incremental and decremental outputted by address K exceed the maximum command value or a command such that the lead becomes a negative value is given.
015 The number of the commanded axes exceeded that of simultaneously controlled axes.
021 An axis not included in the selected plane was commanded in circular interpolation.
023 In circular interpolation by radius designation negative value was commanded for address R.
029 The offset value is too large.
030 The offset number specified by * code for tool length offset (or cutter compensation is too large.)
031 In setting an offset amount by G10, the offset number following address P was excessive or it was not specified.
032 In setting an offset amount by G10, the offset amount was excessive.
033 A point of intersection cannot be determined for cutter compensation C/ Tool nose radius compensation.
034 The start up or cancel was going to be performed in the G02 or G03 mode in cutter compensation C/tool nose radius compensation.
035 G39 is commanded in cutter compensation B cancel mode or on the plane other than offset plane/Ship cutting (G31 was specified in tool nose radius compensation mode.
036 Skip cutting (G31) was specified in cutter compensation mode.
037 G40 ( offset cancel) is commanded at the plane other than the offset plane in cutter compensation B. The plane selected by using G17, G18, G19 is changed in cutter compensation C mode.
038 Overcutting will occur in cutter compensation C because the arc start point or end point coincides with the arc centre/Overcutting will occur in tool nose radius compensation C because the arc start point or end point coincides with the arc centre/
039 Chamfering or corner R was specified with a start up, a cancel, or switching between G41 and G42 in tool nose radius compensation. The program may cause overcutting to occur in chamfering or corner R.
040 Overcutting will occur in tool nose radius compensation in a canned cycle G90 or G94.
041 Overcutting will occur in cutter compensation C/ tool radius compensation.
044 One of G27 to G30 is commanded in canned cycle mode.
050 The chamfering or a corner R was specified in a block which includes a thread cutting command.
051 The block after a block containing a chamfering or a corner R specification was not a G01 command.
052 The move direction  or the move amount in a block following chamfering  or a corner R command was not adequate.
053 2 or more of I, K and R are directed in chamfering and corner radius R command or C or R does not come after a comma (,) in direct drawing dimension programming.
054 A block in which the chamfering or the  corner R was specified includes a taper command.
055 The move distance in the block which includes the chamfering or the corner R specification is smaller than the chamfering amount
056 Both end point and angle are not designated in the next block command of the angle designation block (A_). I (K) is commanded to X axis ( Z axis) in chamfering command.
057 Block end point is not calculated correctly in direct dimension drawing programming.
058 Block end point is not found in direct dimension drawing programming.
059 The program with the selected number cannot be searched in external program number search.
060 Commanded sequence number was not found in the sequence number search.
061 Address P or Q is not specified in G70, G71, G72 or G73 command.
062 The depth of  cut in G71 or G72 is zero or negative value.The repetitive count in G73 is zero or negative value.

The negative value is specified to A1 or Ak in G74 or G75.

A value other than zero is specified to Ad, though the relief direction in G74 or G75 is determined.

Zero on a negative value is specified to the height of thread of depth of cut of 1st time in G76.

The specified minimum depth of cut in G76 is greater than the height of thread.

An unusable angle of tool tip is specified in G76.

063  The sequence number specified by address P in G70, G71, G72 or G73 command cannot be searched.
065 G00 or G01  is not commanded at the block with the sequence number which is specified in address P in G71, G72 or G73 command.Address Z (W) or X (U) was commanded in the block with a sequence number which is specified by address P in G71 or G72 respectively.
066 An allowable G code was commanded between two blocks specified by address P and Q in G71, G72, G73.
067 G70, G71, G72 or G73 command with address P and Q was specified in MDI mode.
069 The final move command in the blocks specified by P and Q of G70, G71, G72 and G73 ended with chamfering or corner R.
070 The memory area is insufficient.
071 The address to be searched was not found. Or the program with specified program number was not found in program number search.
072 The number of programs to be stored exceeded 63 or 125.
073 The commanded program number has already been used.
074 The program number is other than 1 to 9999.
076 Address P was not commanded in the block which includes an M98 or a G65 command.
077 The subprogram was called in three or five folds.
078 A program number or a sequence number which was specified by address P in the block which includes an M98, M99 or G66 was not found.
079 The contents of the program stored in the memory did not agree with that in tape in collection.
080 In the area specified by parameter E, the measuring position reach signal does not come on.
081 Automatic tool compensation was specified without a T code.
082 T code and automatic tool compensation were specified in the same block.
083 In automatic tool compensation an invalid axis was specified or the command is incremental.
085 When entering data in the memory by using ASR or Reader/puncher interface , an overrun, parity or framing error was generated. The number of bits or input data or setting of baud rate is incorrect.
086 When entering data in the memory by using Reader/puncher interface , the ready signal (DR) of reader/puncher was turned off/.
087 When entering data in the memory by using Reader/puncher interface , though the read terminate command is specified input is not interrupted after 10 characters read.
090 The reference point return cannot be performed normally because the reference point return start point is too close to the reference point or the speed is too slow.
092 The commanded axis by G27 did not return to the reference point.
094  P type cannot be specified when the program is restarted.
095  P type cannot be specified when the program is restarted.
096  P type cannot be specified when the program is restarted.
097  P type cannot be specified when the program is restarted
098 A command of the program restart was specified without the reference point return operation after power ON and emergency stop and G28 was found during search.
099 After completion of search in program restart, a move command is given with MDI.
100 Setting data PWE is set to 1. Turn it to 0 and reset the system.
101 The power was turned off while rewriting the contents of the memory in the part program storage and editing operation. When this alarm is generated set the data PWE to 1 and turn on the power while pushing DELETE to clear the memory.
111 The calculation result of macro instruction exceeds the allowable range.
112 Division by Zero was specified. ( including tan 90 degrees)
114 An undefined H code is designated in G65 block.
115 A value not defined as a variable number is designated.
116 The variable number designated with P is forbidden for assignment.
119 The argument of SQRT or BCD is negative.
122 The macro model call is specified in double.
125 In the block with G65, the unusable address was specified..
128 The sequence number specified in the brand command was not 0 to 9999. Or, it cannot be searched.
130 In 3rd axis control, a 3rd axis control command was given by PMC during Cf control. On the contrary an attempt was made for spindle indexing.
135 Without any spindle orientation, an attempt was made for spindle indexing.
136 A move command of other axes was specified to the same block as spindle indexing addresses C, H.
137 A move command of other axes was specified to the same block as M code related to spindle indexing.

Absolute Pulse Code (APC) Alarms

Alarm Code Type Description of Alarm/Error
3n0 nth-axis origin return Manual reference position is required for the nth axis.
3n1 APC alarm: nth axis communication nth axis communication error. Failure in data transmission.
3n2 APC alarm: nth axis over time nth axis APC overtime error.
3n3 APC alarm: nth axis framing nth axis APC overtime error. Failure in data transmission.
3n4 APC alarm: nth axis parity nth axis APC Paraity error. Failure in data transmission.
3n5 APC alarm: nth axis pulse error nth axis APC pulse error alarm.
3n6 APC alarm: ntha xis battery voltage 0 nth axis APC battery voltage has decreased to a low level so that data cannot be held.
3n7 APC alarm: nth axis battery low 1 nth axis axis APC battery voltage reached a level where the battery must be renewed
3n8 APC alarm: nth axis battery low 2 nth axis axis APC battery voltage reached a level where the battery must be renewed( including when power is OFF)
3n9 SPC ALARM: n AXIS PULSE CODER The n axis ( axis 1-8) pulse coder has a fault.

Servo Alarms

Alarm Code Type Description of Alarm/Error
400 SERVO ALARM: 1, 2TH AXIS OVERLOAD 1-axis, 2-axis overload signal is on.
401 SERVO ALARM: 1, 2TH AXIS VRDY OFF 1-axis, 2-axis servo amplifier READY signal (DRDY) went off.
402 SERVO ALARM: 3, 4TH AXIS OVERLOAD 3 axis, 4 axis overload signal is on.
403 SERVO ALARM: 3, 4TH AXIS VRDY OFF 3-axis, 4 axis servo amplifier READY signal (DRDY) went off.
404 SERVO ALARM: n-TH AXIS VRDY ON Even though the n-th axis ( axis 1-8) READY signal ( DRDY) is still on. Or, when the power was turned on, DRDY went on even though MCON was off.
405 SERVO ALARM: ZERO POINT RETURN FAULT Position control system fault.
406 SERVO ALARM: 7, 8TH AXIS OVERLOAD7TH, 8TH AXIS VRDY OFF 7-axis, 8-axis overload signal is on.
4n0 SERVO ALARM: n-TH AXIS -EXCESS ERROR The position deviation value when the n-th  axis stops is larger than the set value.
4n1 SERVO ALARM: n-AXIS-EXCESS ERROR The position deviation value when the n-th axis stops is larger than the set value.
4n3 SERVO ALARM: n-th AXIS -LSI OVERFLOW The contents of the error register for the n-th axis exceeded power.
4n4 SERVO ALARM: n-TH AXIS DETECTION RELATED ERROR N-th axis digital servo system fault.
4n5 SERVO AALRM: n-TH AXIS- EXCESS SHIFT A speed higher than 4000000 units/s was attempted to be set in the n-th axis.
4n6 SERVO ALARM: n-TH AXIS -DISCONNECTION Position detection system fault in the n-th axis pulse coder ( disconnecton alarm).
4n7 SERVO ALARM: n-TH AXIS-PARAMETER INCORRECT This alarm occurs when the n-th axis is in one of the conditions below:

  1. The value set in Parameter no 8n20 (motor form) is out of the specified limit.
  2.  A proper value ( 111 or -111) is not set in parameter no 8n22.( motor revolution direction).
  3. Illegal data ( a value below 0, etc) was set in parameter No 8n23 ( number of speed feedback pulses per motor revolution)
  4. Illegal data ( a value below 0, etc) was set in parameter No 8n24 ( number of speed feedback pulses per motor revolution)
  5. Parameters No. 8n84 and No. 8n85 (flexible field gear rate) have not been set.
  6. An axis selection parameter ( from No.269 to 274 is incorrect.
  7. An overflow occured during parameter computation.
490 SERVO ALARM: 5TH AXIS OVERLOAD 5-axis, 6-axis overload signal is on.
491 SERVO ALARM: 5, 6TH AXIS VRDY ON 5-axis, 6-axis servo amplifier READY signal (DRDY) went off.
494 SERVO ALARM: 5, 6TH AXIS VRDY ON The axis card ready signal ( MCON) for axes 5 and 6 is off, but the servo amplifier ready signal (DRDY) is not. Alternatively when the power is applied, the DRDY is on and the MCON is not.
495 SERVO ALARM: 5, 6TH AXIS ZERO POINT RETURN This is a position control circuit error.

Overtravel Alarms

Alarm Code Description of Alarm/Error
510 Overtravel to exceed the (+) stroke limit of the X-axis
511 Overtravel to exceed the (-) stroke limit of the X-axis
512 2nd stroke limit at + side of X axis was exceeded
513 2nd stroke limit at + side of X axis was exceeded
520 Overtravel to exceed the (+) stroke limit of Y axis (M) or Z-axis (T)
521 Overtravel to exceed the (-) stroke limit of Y axis (M) or Z-axis (T)
522 2nd stroke limit at + side of Z axis was exceeded
523 2nd stroke limit at – side of X axis was exceeded
530 Overtravel to exceed the (+) stroke limit of Z-axis
531 Overtravel to exceed the (-) stroke limit of Z-axis
540 Overtravel to exceed the (+) stroke limit of the 4th axis
541 Overtravel to exceed the (-) stroke limit of the 4th axis

Alarm in Fanuc PMC Model L/M

Alarm Code Description of Alarm/Error
600 Interruption by illegal command is occurred
601 PMC RAM parity error is occured
602 PMC serial transmission error is occurred
603 PMC watch dog error is occurred
604 PMC ROM parity error is occurred
605 LADDER contents which can be stored in PMC is exceeded

Overheat Alarms

Alarm Code Description of Alarm/Error
700 Master PCB is overheated
702 X, Y, (M), or Z axis servo motor is overheated
703 4th axis servo motor is overheated

System Alarms

Alarm Code Type Description of Alarm/Error
910 MAIN RAM PARITY This RAM parity error is related to low-order-by-test.
911 MAIN RAM PARITY This RAM parity error is related to the low-order bytes.
912 SHARED RAM PARITY This RAM parity error is related to the low-order bytes of RAM shared with the digital servo circuit.
913 SHARED RAM PARITY This parity error is related to high-order bytes of RAM shared with the digital servo cicuit.
914 SERVO RAM PARITY This is a local RAM parity error in the digital servo circuit.
915 LADDER EDITING CASSETTE RAM PARITY This RAM parity error is related to low order bytes of the ladder editing cassette.
916 LADDER EDITING CASSETTE RAM PARITY This RAM parity error is related to the high order bytes of the ladder editing cassette.
920 WATCHDOG ALARM This is a watchdog timer aalrm or a servo system alarm for axis 1 to 4.
921 SUB CPU WATCH DOG ALARM This is a watchdog timer alarm related to the sub-CPU board or a servo system alarm for axis 5 or 6.
922 7/8 AXIS SERVO SYSYTEM ALARM This is a servo system alarm related to axis 7 or 8.
930 CPU ERROR Replace the master PC board.
940 PC BOARD INSTALLATION ERROR PC board installation is incorrect. Check the specification of the PC board.
941 MEMORY PC BOARD CONNECTION ERROR The memory PC board is not connected securely.
945 SERIAL SPINDLE COMMUNICATION ERROR The hardware configuration is incorrect for the serial spindle, or a communication alarm occured.
946 SECOND SERIAL SPINDLE COMMUNICATION ERROR Communication is impossible with the second serial spindle.
950 FUSE BLOWN ALARM A fuse has blown
960 SUB CPU ERROR This is a sub-CPU error.
998 ROM PARITY This is a ROM parity error.

Bảng  mã lỗi bộ điều khiển Fanuc 0i hay Oi

Alarm Code Description of Alarm/Error
000 Re-apply the power after the parameter has been input
001 TH Alarm (A character with incorrect parity was input) Correct the tape
002 TV Alarm (The number of characters in a block is odd). This alarm is generated only when the TV check is effective
003 Data exceeding the maximum allowable number of digits was input
004 A numeral or the sign (-) was input without an address at the beginning of the block
005 The address was not followed by the appropriate data but was followed by another address of EOB code
006 Sign “-” input error (sign “-” was input after a address with which it can’t be used. Or two “-” signs were used).
007 Decimal Point “.” Input error (A decimal point was input after a address with which it can’t be used. Or input of two decimals).
008 The switch position of the tape reader was not AUTO (without reel) or REEL ON/REEL OFF (with reels).
009 Unusable character was input. (E).
010 A unusable G code was commanded. (The alarm is generated also when a G code with which the control is not equipped as an option is commanded).
011 Feed rate was not commanded at cutting feed or the feed rate was inadequate
015 The number of the commanded axes exceeded that of the allowable simultaneously controlled axis
017 The move commanded of the additional axis was commanded without equipping with an optional additional axis.
018 An additional axis was commanded with the other axis simultaneously.
021 The axis not included in the selected plane (by using G17, G18, G19) was commanded in circular interpolation.
022 In circular interpolation, radius designation was performed in the NC which is not equipped with the radius designation option.
023 In circular interpolation by radius designation, Zero was commanded for address R.
030 The tool offset number is too large for the D or H function.
031 In setting of offset amount by G10, The offset number following address P was excessive or it was not specified.
032 In setting of offset amount by G10, the offset amount was excessive.
035 Skip Cutting (G31) was commanded in cutter compensation mode.
036 G45-G48 (Tool Offset) was commanded in cutter compensation mode.
037 The selected (by using G17, G18 or G19) changed in cutter compensation mode.
038 Over cutting will occur in cutter compensation because the arc start point or end point coincides with arc center
041 Overcutting will occur in cutter compensation.
044 One of G27-G30 was commanded in canned cycle mode. In canned cycle mode, an ATC cycle (M06) is commanded.
045 An ATC cycle (M06) was commanded for the NC which is not equipped with optional reference point return feature.
046 Other than P2, P3 and P4 was specified in the 2nd, 3rd and 4th reference point return commands.
047 G27 to G30 was commanded for and axis which does not have a reference point.
058 In 4-digit S code binary 12-bit/analogue output A, A command was specified exceeding the maximum or minimum number of spindle revolutions.
059 No program for selected work number is found (external work number select A function).
060 Commanded sequence number was not found in the sequence number search,
065 Scaling Magnification was specified as other than 1-99999.
066 Scaling was applied and as a result, movement value, coordinate value, circular arc radius, etc. exceed maximum programmable dimension.
067 G51 (scaling ON) was specified in cutter compensation mode.
070 The fanuc memory area is insufficient.
071 The address to be searched was not found.
072 The number of programs to be stored exceeds 95 or 191. (191 is a option)
073 The program number has already been used.
074 The program number is other then 1-9999
075 The program number or sequence number was not found at the start block of the program
076 The address P was commanded in the block with includes a M98 command.
077 The subprogram was called in triple
078 The sequence number which was specified by address P in the block which includes a M98 or M99 was not found
079 Memorized program and tape contents do not coincide
085 When storing data in memory by using ASR or RS232C interface, an over-run or framing error was generated
086 The signal level of RS232C interface was incorrect
087 When storing data in the memory by using the fanuc RS232 interface, the time required to store the data is insufficient.
090 The reference point return cannot be performed normally because the reference point return start point is to close to the reference point or one revolution signal is not input owing to a fault in the pulse coder.
091 Reference point return cannot be executed normally, because of the feed rate is too low to synchronize the one revolution signal of the pulse coder with the reference counter,
092 The axis designated by G27 did not return to reference point.
094 No P type can be specified for program restart (because after program interruption, coordinate system setting or ORIGIN, etc. was executed)
095 No P type can be specified for program restart (because after program interruption, external work zero point offset value changed)
096 No P type can be specified for program restart (because after program interruption, work zero point offset value changed).
097 No P type can be specified for program restart (because after program interruption, no automatic operation has been executed).
100 The switch to set parameters is on. Push the reset button after turning off the switch.
101 The power was turned off while rewriting the contents of memory in the part program storage & editing operation. To clear the memory when this alarm is generated turn on the power and push the DELETE and RESET buttons.
110 Absolute value of data of fixed point representation exceeds the upper bound (99999999).
111 Exponent of data of floating point representation exceeds the upper bound.
112 Divisor is 0
113 A function that cannot be used by user macro A is used
114 Format error except for
115 Value not defined as variable number is assigned
116 Left side of substituted sentence is a variable of prohibited substitution
118 Nesting of brackets exceeds the upper limit (5).
119 Argument of SQRT is negative , Or argument of BCD is negative
122 Nesting of macro exceeds the upper limit (4)
123 Macro control command is uded in tape mode
124 DO END is not 1:1 corresponding
125 Format error of (formula)
126 Not 1 £ n £ 3 in DO n
127 NC command and macro command are mixed
128 Not 0 £n £9999 in GO TO n
129 Unallowable address is used in .
130 In external data input, greater-address data contains an error
131 In external alarm message, five or more alarms have occurred
132 In external alarm message, clear, no corresponding alarm number exists
133 In external alarm message and in external operator message, smaller- address data contains an error
170 Programs of numbers 8000 – 8999 and 9000 – 9899 are being edited, But this alarm occurs only when parameter setting inhibits these programs to be edited. Error on Stroke Limit Switch
210 The movable part of machine touched the X Axis plus stroke limit switch
211 The movable part of machine touched the X Axis minus stroke limit switch
212 While the X Axis was moving in the plus direction, It entered into the forbidden area of the stored stroke limit 1
213 While the X Axis was moving in the minus direction, It entered into the forbidden area of the stored stroke limit 1
214 While the X Axis was moving in the plus direction, It entered into the forbidden area of the stored stroke limit 2
215 While the X Axis was moving in the minus direction, It entered into the forbidden area of the stored stroke limit 2
220 The movable part of the machine touched the Y axis plus stroke limit switch
221 The movable part of the machine touched the Y axis minus stroke limit switch.
222 While the Y axis was moving in the plus direction, it entered into the forbidden area of the stored stroke limit 1
223 While the Y axis was moving in the minus direction, it entered into the forbidden area of the stored stroke limit 1
224 While the Y axis was moving in the plus direction, it entered into the forbidden area of the stored stroke limit 2
225 While the Y axis was moving in the minus direction, it entered into the forbidden area of the stored stroke limit 2
230 The movable part of the machine touched the Z axis plus stroke limit switch
231 The movable part of the machine touched the Z axis minus stroke limit switch
232 While the Z axis was moving in the plus direction, it entered into the forbidden area of the stored stroke limit 1
233 While the Z axis was moving in the minus direction, it entered into the forbidden area of the stored stroke limit 1
234 While the Z axis was moving in the plus direction, it entered into the forbidden area of the stored stroke limit 2
235 While the Z axis was moving in the minus direction, it entered into the forbidden area of the stored stroke limit 2
240 The movable part of the machine touched the 4th axis plus stroke limit switch
241 The movable part of the machine touched the 4th axis minus stroke limit switch. Error on servo system
400 The control received the X, Y or Z axis overload signal
401 The READY signal (VRDY) of the X, Y or Z axis velocity control has turned off
402 The control received the 4TH axis overload signal
403 The READY signal (VARY) of the 4TH axis velocity control has turned off
404 The READY signal (VARY) of the X, Y or Z axis velocity control does not turn off even though the READY signal (PRDY) of the position control has turned offThe READY signal (VARY) of velocity control already on even though the READY signal (PRDY) of the position control is off yet at power on condition
405 In reference point return, reference point return is not performed in correctly by abnormality of NC control section or servo system. Perform manual reference point return again
410 The content of error register of the X axis is larger than the value allowed while the machine is stopped
411 The content of error register of the Y axis is larger than the value allowed while the machine is moving
412 Drift in X axis is excessive. (Exceeds 500VELO)
413 The content of the error register of the X axis exceeded =32767. Or the velocity command value of the DA converter is out of the range of +8191~ – 8192. Incorrect settings will cause this alarm
414 The resolver/inductosyn position detecting system of X axis is trouble
415 A feed rate exceeding 511875 detection units/sec was commanded in the X axis. An incorrect setting of CMR causes this error
416 X axis pulse coder position feedback is abnormal. (Disconnection alarm)
420 The content of the error register of the Y axis is larger than the value allowed while the machine is stopped
421 The content of the error register of the Y axis is larger than the value allowed while the machine is moving
422 Drift in Y axis is excessive. (Exceeds 500VELO)
423 The content of the error register of the Y axis exceeded =32767. Or the velocity command value of the DA converter is out of the range of +8191~ – 8192. Incorrect settings will cause this alarm
424 The DSCG position detecting system of the Y axis is trouble
425 A feed rate exceeding 511875 detection units/sec was commanded in the Y axis. An incorrect setting of CMR causes this error
426 Y axis Fanuc pulse coder position feedback is abnormal. (Disconnection alarm)
430 The content of the error register of the Z axis is larger than the value allowed while the machine is stopped
431 The content of the error register of the Z axis is larger than the value allowed while the machine is moving
432 Drift in Z axis is excessive. (Exceeds 500VELO)
433 The content of the error register of the Z axis exceeded =32767. Or the velocity command value of the DA converter is out of the range of +8191~ – 8192. Incorrect settings will cause this alarm
434 The resolver/inductosyn position detecting system of Z axis is trouble
435 A feed rate exceeding 511875 detection units/sec was commanded in the Z axis. An incorrect setting of CMR causes this error
436 Z axis pulse coder position feedback is abnormal. (Disconnection alarm)
440 The content of the error register of the 4TH axis is larger than the value allowed while the machine is stopped
441 The content of the error register of the 4TH axis is larger than the value allowed while the machine is moving
442 Drift in 4TH axis is excessive. (Exceeds 500VELO)
443 The content of the error register of the 4THaxis exceeded =32767. Or the velocity command value of the DA converter is out of the range of +8191~ – 8192. Incorrect settings will cause this alarm
444 The resolver/inductosyn position detecting system of the 4TH axis is trouble
600 Data transferring error took place in the connection unit or in PC-model C
601 Slave relay was turned off. (Connections among unit, MDI/DPL (MDI/CRT) and master PCB are trouble. Also in another case change connection unit)
602 PC program has not yet been loaded
603 The correspondence between NC and PC is incorrect or interrupted. Change power sequence control PCB or master PCB
604 No hold is effective to PC-model B side MPU
605 A system error has occurred in PC-model B side MPU
606 RAM/ROM parity has occurred in PC-model B side MPU
607 Data transferring error took place in Fanuc MDI & CRT. Overheat alarm
700 Overheat of the master PCB
701 Overheat of the PCB for 4TH axis
702 Overheat of DC motor for X, Y, Z axis
703 Overheat of DC motor for 4TH axis. Errors on memory
900 Fault in bubble device. (Fault of input signal for bubble device)
901 Fault in bubble device.
902 Fault in bubble device. (Page size error, undefined command)
903 Fault in bubble device. (Transfer missing, page size over)
904 Fault in Fanuc bubble device. (Parity error)
905 Fault in bubble device. (No marker)
906 Fault in bubble device. (Many defect loops)
910 RAM parity error (low byte)
911 RAM parity error (high byte)
920 System error (watch dog timer alarm)
930 CPU error (0, 3, 4 type interrupt generation)
997 ROM parity error (PC ROM)
998 ROM parity error (Basic ROM)
999 ROM pair error (No correspondence between high and low)

 Background Edit Alarm

Alarm Code Type Description of Alarm/Error
???? BP/S alarm BP/S alarm occurs in the same number as the P/S alarm that occurs in ordinary program edit.
140 BP/S alarm It was attempted to select or delete in the program being selected in the foreground.  (Note)

Note: Alarm in background edit is displayed in the key input line of the background edit screen instead of the ordinary alarm screen and is resettable by any of the MDI key operation.

Absolute Coder Alarm

Alarm Code Type Description of Alarm/Error
300 APC alarm: nth-axis origin return Manual reference position return is required for the nth axis (n=1-8)
301 APC alarm: nth-axis communication nth axis (n=1-8) APC communication error. Failure in data transmission
302 APC alarm: nth-axis over time nth axis (n=1-8) APC overtime error. Failure in data transmission
303 APC alarm: nth-axis framing nth axis (n=1-8) APC framing error. Failure in data transmission
304 APC alarm: nth-axis parity nth axis (n=1-8) APC parity error. Failure in data transmission.
305 APC alarm: nth-axis pulse error nth axis (n=1-8) APC pulse error alarm
306 APC alarm: nth-axis battery voltage 0 nth axis (n=1-8) APC battery voltage has decreased to a low level so that the data cannot be held.
307 APC alarm: n-th axis battery low 1 nth axis (n=1-8) APC battery voltage has reached a level where the battery must be renewed.
308 APC alarm: nth axis battery low 2 nth axis (n=1-8) APC battery voltage has reached a level where the battery must be renewed. (including when the power is OFF)
309 APM ALARM: n AXIS ZRN IMPOSSIBL Return to the origin has been attempted without first rotating the motor one or more times.

Inductsyn Alarms

Alarm Code Type Description of Alarm/Error
330 INDUCTOSYN: DATA ALARM The absolute position data from Inductosyn cannot be detected.
331 INDUCTOSYN: ILLEGAL PRM Parameter No 1874, 1875, or 1876 is set to 0.

Serial Pulse Coder Alarms

Alarm Code Type Description of Alarm/Error
360  n AXIS: ABNORMAL CHECKSUM (INT)  A checksum error occurred in the built in pulse coder
361  n AXIS: ABNORMAL PHASE DATA (INT)  A phase data error occurred in the built in pulse coder
362  n AXIS: ABNORMAL REV.DATA (INT)  A rotation speed count error occurred in the built in pulse coder
363  n AXIS: ABNORMAL CLOCK (INT)  A clock error occurred in the built in pulse coder
364  n AXIS: SOFT PHASE ALARM (INT)  The digital servo software detected invalid data in the built in pulse coder
365  n AXIS: BROKEN LED (INT)  An LED error occurred in the built in pulse coder
366 n AXIS: PULSE MISS (INT)  A pulse error occured in the built in pulse coder
367  n AXIS: COUNT MISS (INT)  A count error occured in the built in pulse coder
368  n AXIS: SERIAL DATA ERROR (INT)  Communication data from the built in pulse coder cannot be received
369 n AXIS: DATA TRANS. ERROR (INT)  A CRC or stop bit error occurred in the communication data being received from the built in pulse coder.
380  n AXIS: BROKEN LED (INT)  The LED of separate detector is erroneous
381  n AXIS: ABNORMAL PHASE (EXT INT)  A phase data error occurred in the separate linear scale
382  n AXIS: COUNT  MISS (EXT)  A pulse error occurred in the separate detector
383  n AXIS: PULSE MISS (EXT)  A count  error occurred in the separate detector
384  n AXIS: SOFT PHASE ALARM (EXT)  The digital servo software detected invalid data in the separate detector
385  n AXIS: SERIAL DATA ERROR (EXT)  Communication data from the separate detector cannot be received.
386  n AXIS: DATA  TRANS. ERROR (EXT)  A CRC or stop bit error occurred in the communication data being received from the separate detector.
387  n AXIS: ABNORMAL ENCODER (EXT)  An error occurs in the separate detector.

Servo Alarms 1/2

Alarm Code Type Description of Alarm/Error
401  SERVO ALARM: n-TH AXIS VRDY OFF  The n-th axcis (1-8) servo amplifier READY signal (DRDY) went off.
402  SERVO ALARM: SV CARD NOT EXIST  The axis control card is not provided.
403  SERVO ALARM: CARD/SOFT MISMATCH  The combination of the axis control card and servo software is illegal.
404  SERVO ALARM: n-TH AXIS VRDY ON  Even though the n-th axis (axis 1-8) READY signal (MCON) went off the servo amplifier READY signal (DRDY) is still on. Or when the power as turned on, DRDY went on even though MCON was off.
405  SERVO ALARM: (ZERO POINT RETURN FAULT) Position control system fault.
407  SERVO ALARM: EXCESS ERROR The following error occurred during simple synchronous control: The difference in machine coordinates between the synchronized axes exceeds the value set in parameter No 8314.
409  SERVO ALARM: n AXIS TORQUE ALARM Abnormal servo motor load has been detected. Alternatively abnormal spindle motor load has been detected in C’s mode.
410  SERVO ALARM: n-TH AXIS EXCESS ERROR One of the following errors occurred:

  1. The positional deviation value when the n-th axis stops exceeds the value set in parameter No 1820.
  2. In simple synchronous control, the compensation amount for the synchronization exceeds the value set in parameter No 8325.
411  SERVO ALARM: n-TH AXIS EXCESS ERROR The position deviation value when the n-th axis ( axis 1-8) moves is larger than the set value.
413  SERVO ALARM: n-TH LSI OVERFLOW The contents of the error register for  the n-th axis ( axis 1-8) exceeded + or -2 power 31. This error occurs as the result of improperly  set parameters.
415  SERVO ALARM: n-TH AXIS EXCESS SHIFT A speed higher than 524288000 unit/s was attempted to be set in the n-th axis ( axis 1-8). This error occurs as the result of improperly set CMR.
417  SERVO ALARM: n-TH AXIS PARAMETER INCORRECT This alarm occurs when the n-th axis ( axis 1-8) is in one of the conditions listed below:

  1. The value set in Parameter No. 2020 is out of the specified limit.
  2. A proper value (111 0r -111) is not set in parameter No 2022.
  3. Illegal data ( a value below 0, etc) was set in parameter No 2023.
  4. Illegal data ( a value below 0, etc) was set in parameter No 2024.
  5. Parameters No 2084 and No 2085 have not been set.
  6. A value outside the limit of {1 to the number of control axes} or a non continuous value (Parameter 1023 contains a value out of the range from 1 to the number of axes, or an isolated value was set in parameter no 1023.
  7. A torque control parameter is set incorrectly in PMC axis control.
420  SERVO ALARM: n AXIS EXCESS SYNC TORQUE During simple synchronous control, the difference between the torque commands for the master and slave axes exceeded the value set in parameter NO 2031.
421  SERVO ALARM: n AXIS EXCESS ER(D) The difference between the errors in the semi closed loop and closed loop has become excessive during dual position feedback.
422  SERVO ALARM: n AXIS In torque control of PMC axis control, a specified allowable speed has been exceeded.
423  SERVO ALARM: n AXIS In torque control of PMC axis control, the parameter set allowable cumulative travel distance has been exceeded.
430  n-AXIS : SV. MOTOR OVERHEAT A servo motor overheat occured.
431 n-AXIS : CNV. OVERLOAD 1. PSM: Overheat occured.2. B series SVU: Overheat occured
432 n-AXIS : CNV. LOW VOLT CONTROL 1. PSM: Control power voltage has dropped.2.PSMR. The control power supply voltage has dropped

3. B series SVU: The control power supply voltage has dropped

433 n-AXIS : CNV. LOW VOLT DC LINK 1. PSM: The DC Link voltage has dropped.2. PSMR. The DC Link Voltage has dropped.

3. a series SVU: The DC Link Voltage has dropped.

4. b series SVU: The DC Link Voltage has dropped.

434 n-AXIS : INV. LOW VOLT CONTROL SVM: The control power supply voltage has dropped.
435 n-AXIS : INV. LOW VOLT DC LINK SVM: The DC voltage has dropped.
436 n-AXIS : SOFTTHERMAL (OVC) The digital servo software detected the soft thermal state (OVC)
437 n-AXIS : CNV. OVERCURRENT POWER PSM:  Overcurrent flowed into the input circuit.
438 n-AXIS : INV. ABNORMAL CURRENT 1. SVM: the motor current is too high2. a series SVU: The motor current is too high.

3. b series SVU: The motor current is too high.

439 n-AXIS : CNV. OVERVOLT POWER 1. PSM: The DC link voltage is too high2. PSMR: The DC link voltage is too high

3. a series SVU: The C link voltage is too high.

3. b series SVU: The link voltage is too high.

440 n-AXIS : CNV. EX DECELERATION POW. PSMR: The regenerative amount is too large.a series SVU: The regenerative discharge amount is too large/abnormal.
441 n-AXIS : ABNORMAL CURRENT OFFSET The digital servo software detected an abnormality in the motor current detection circuit.
442 n-AXIS : CNV. CHARGE FAILURE 1. PSM: The spare discharge circuit of the DC link is abnormal.2. PSMR: The spare discharge circuit of the DC link is abnormal.
443 n-AXIS : CNV. COOLING FAN FAILURE 1. PSM: The internal stirring fan failed.2. PSMR: The internal stirring fan failed.

3. b series SVU: The internal stirring fan failed.

444 n-AXIS : INV. COOLING FAN FAILURE SVM: The internal stirring fan failed.
445 n-AXIS : SOFT DISCONNECT ALARM The digital servo software detected a broken wire in the pulse coder.
446 n-AXIS : HARD DISCONNECT ALARM A broken wire in the built in pulse coder was detected by hardware.
447 n-AXIS : HARD DISCONNECT ( EXT) A broken wire in the built in the separate detector was detected by hardware.
448 n-AXIS : UNMATCHED FEEDBACK ALARM The sign of feedback data from the built in pulse coder differs from that of feedback data from the separate detector.
449 n-AXIS : INV. IPM ALARM 1. SVM: IPM detected an alarm2. a series SVU: IPM detected an alarm
453 n-AXIS : SPC SOFT DISCONNECT ALARM Software disconnection alarm of the a pulse coder.
456  ILLEGAL CURRENT LOOP The current control cycle settings are incorrect.
457 ILLEGAL HI HRV (250US) Use of high speed HRV is specified although the current control cycle is 200 us.
458 CURRENT LOOP ERROR The current control cycle setting does not match the actual current control cycle.
459 HI HRV SETTING ERROR Of two axes having adjacent servo axis numbers (parameter No 1023), odd number and even number, high speed HRV control can be performed for one axis and not for the other.
460 n AXIS: FSSB DISCONNECT  FSSB Communication was disconnected suddenly.
461 n AXIS: ILLEGAL AMP INTERFACE The axes of the 2-axis amplifier were assigned to the fast type interface.
462 n AXIS: SEND CNC DATA FAILED Because of of an FSSB communication error, a slave could not receive correct data.
463 n AXIS: SEND SLAVE DATA FAILED Because of of an FSSB communication error, the servo system could not receive correct data.
464 n AXIS: WRITE ID DATA FAILED  An attempt was made to write maintenance information on the amplifier maintenance screen, but it failed.
465 n AXIS: READ ID DATA FAILED  At power-up, amplifier initial ID information could not be read.
466 n AXIS: MOTOR/AMP COMBINATION  The maximum current rating for the amplifier does not match the motor.
467 n AXIS: ILLEGAL SETTING OF AXIS  The servo function for the following has not been enabled when an axis occupying a single DSP is specified ion the axis setting screen.
468 HI HRV SETTING ERROR (AMP) Use of high speed HRV is specified for a controlled axis of an amplifier which does not support high speed HRV.

Over Travel Alarms

Alarm Code Type Description of Alarm/Error
 A checksum error occurred in the built in pulse coder
 A phase data error occurred in the built in pulse coder
362  n AXIS: ABNORMAL REV.DATA (INT)  A rotation speed count error occurred in the built in pulse coder
363  n AXIS: ABNORMAL CLOCK (INT)  A clock error occurred in the built in pulse coder
364  n AXIS: SOFT PHASE ALARM (INT)  The digital servo software detected invalid data in the built in pulse coder
387  n AXIS: ABNORMAL ENCODER (EXT)  An error occurs in the separate detector.

Servo Alarms 2/2

Alarm Code Type Description of Alarm/Error
 600  n AXIS: INV.DC LINK OVER CURRENT  DC Link current is too large
 601  n AXIS: INV.RADIATOR FAN FAILURE  The external dissipator stirring fan failed
 602  n AXIS: INV. OVERHEAT  The servo amplifier was overheated
 603  n AXIS: INV.IPM ALARM (OH)  The IPM (intelligent power module) detected an overheat alarm.
 604  n AXIS: AMP.COMMUNICATION ERROR  Communication between the SVM and the PSM failed.
 605  n AXIS: CNV.EX.DISCHARGE POW.  PSMR: Regenerative power is too large.
 606  n AXIS: CNV.RADIATOR FAN FAILURE  PSM: The external dissipator stirring fan failed.PSMR: The external dissipator stirring fan failed.
 607  n AXIS: CNV.SINGLE PHASE FAILURE  PSM: Input voltage is in the open phase conditionPSMR: Input voltage is in the open phase condition

Overheat Alarms

Alarm Code Type Description of Alarm/Error
 700  OVERHEAT: CONTROL UNIT Control unit overheat
 701  OVERHEAT: FAN MOTOR The fan motor on the top of the cabinet for the control unit is overheated.
 704  OVERHEAT: SPINDLE Spindle overheat in the spindle fluctuation detection

Rigid Tapping Alarms

Alarm Code Type Description of Alarm/Error
 740 RIGID TAP ALARM: EXCESS ERROR The positional deviation of the stopped spindle has exceeded the set value during rigid tapping.
 741 RIGID TAP ALARM: EXCESS ERROR The positional deviation of the moving spindle has exceeded the set value during rigid tapping.
 742 RIGID TAP ALARM: LSI OVERFLOW An LSI overflow has occured for the spindle during rigid tapping.

Overheat Alarms

Alarm Code Type Description of Alarm/Error
 700  OVERHEAT: CONTROL UNIT Control unit overheat
 701  OVERHEAT: FAN MOTOR The fan motor on the top of the cabinet for the control unit is overheated.
 704  OVERHEAT: SPINDLE Spindle overheat in the spindle fluctuation detection

Rigid Tapping Alarms

Alarm Code Type Description of Alarm/Error
 740 RIGID TAP ALARM: EXCESS ERROR The positional deviation of the stopped spindle has exceeded the set value during rigid tapping.
 741 RIGID TAP ALARM: EXCESS ERROR The positional deviation of the moving spindle has exceeded the set value during rigid tapping.
 742 RIGID TAP ALARM: LSI OVERFLOW An LSI overflow has occured for the spindle during rigid tapping.

Serial Spindle Alarms

Bảng  mã lỗi bộ điều khiển Fanuc 10 Fanuc 11 Fanuc 12

Alarm Code Description of Alarm/Error
A MDI connection failure

  • Check optical cable connection and connector of CRT/MDI unit.
  • Replace master PCB, MDI, PCB or optical fiber cable.
  • Check optical interface (MDI/CRT-Master PCB)
C MDI failure (incorrect ID number)

  • Check the type (9″, 14″ etc.) of CRT/MDI unit of the edition number of NC software.
  • Connection unit of operators panel or its connecting cable is defective.
  • Change MDI/CRT, PCB, Operators I/O PCB.
E System Error

  • Loose contact at connector of PCBs to master PCB.
  • Replace (1) Master PCB, (2) NC Software ROM, or (3) ROM board.
  • Check message at CRT.
  • No message at CRT- Clear all memory.
  • Wrong combination of ROM chips in system. Check option Data Sheet against S/W ROM set.
  • Wrong option parameters. May need extra RAM chips.
F Connection failure of connection unit or I/O cards D1-D3.

  • Check the opticla fiber cable connections or these units and connectors.
  • Replace master PCB, connection unit, I/O cards D1-D3, or optical fiber cable.
  • Optical Interface ( I/O- Master PCB). IF01A PCB plugged into wrong slot in I/O rack.
  • Failed I/O module in I/O base unit.
H Different type of above mentioned unit (incorrect ID number)

  • Check the above inputs for their specified types or check the edition number of NC software.
  • Connection of Conn.Unit 2 or its connecting cable (flat) is defective. Conn.Unit 1-2.
J PC or interface converter does not function( while waiting for an answer).

  • Check if PMC ROM cassette, PMC RAM board or interface comverter is mounted on master PCB: or replace the above PCB.
  • Bad ladder or blank PMC cassette. Clear PMC RAM to correct.
L Waiting for PMC ready

  • Replace PMC ROM, PMC ROM cassette, or PMC Ram board.
  • Check the PMC program ( bug in program). Loose contact at I/O module (pos.etc) connector to back panel
b
RAM check error. Transfer error through optical fiber cable.
  • Replace the master PCB or ROM/RAM board additional memory.
  • Wrong combination of ROM chips in system. Check Option Data Sheet against S/W ROM set.
  • Check alarm LED of the units connected by optical fiber cable.
  • Replace master PCB, MDI PCB, connection unit PCB, I/O unit, or optical fiber cable (replace PCB with alarm LED lit. )
c
( high failure rate )
  • Replace PMC RAM if using PC debug. (PMC RAM board).
  • Loose connection of custom LSI’s on PCB’s.
  • Wrong program in PMC RAM board. Clear RAM to correct.
  • SW ( Write Enable ) of PMC RAM was OFF when turning power on.
  • Problem with contact of connector of Master PCB to I/O unit.
  • Problem with ACP board.
  • Failure of System s/w EPROM’s.
  • Failure of CRT/MDI power supply – check +5 on CA3, pins 4,5,6 or CP23, pins 1,2; +24 on CD1, pin 14 or CP23, pins 5,6
 d
Get when NMI occurs continually. Either RAM Parity or the power off signal occurs
  • Check cable J91 between the Input Unit and Power Supply Unit, or for a failed Input Unit.
  • Replace master PCB, connection unit, I/O cards D1~D3, or optical fiber cable.
  • Optical Interface ( I/O ~ Master PCB ).
  • IF01A PCB plugged into wrong slot in I/O rack.
O
( IPL mode )

  • If unable to get out of IPL mode, change MDI PC
1
Normal operation in progress
4
Bad ACP daughter board
  • Replace ACP daughter board
8
On first power up. Problem caused by clock, custom LSI, CPU, BAC, or master PCB
  • Replace the appropriate board (master PCB)

BLANK (All segments unlit)

  • Power supply

Overheat Alarms

Alarm Code Description of Alarm/Error
OH 000 MOTOR OVERHEAT
OH 001 LOCKER OVERHEAT

Graphic RAM Parity Alarms

Alarm Code Description of Alarm/Error
SB 010 GRAPHIC ROM PARITY
SB 011 GRAPHIC ROM PARITY (WORK)
SB 011 GRAPHIC RAM PARITY (RED)
SB 011 GRAPHIC RAM PARITY (GREEN)
SB 011 GRAPHIC RAM PARITY (BLUE)

Parameter Alarms

Alarm Code Description of Alarm/Error
SW 000 PARAMETER ENABLE SWITCH ON
SW010 BUBBLE FREE MODE AVAILABLE

PC Error Alarms

Alarm Code Description of Alarm/Error
PC 010 PC ERROR
PC 020 PC ERROR
PC 030 PC ERROR
PC 500 WATCH DOG ALARM
PC 510 MIC TYPE MISS MATCH

Overheat Alarms

Alarm Code Description of Alarm/Error
OT 001 + OVERTRAVEL (SOFT 1 )
OT 002 – OVERTRAVEL (SOFT 1 )
OT 003 + OVERTRAVEL (SOFT 2 )
OT 004 – OVERTRAVEL (SOFT 2 )
OT 005 + OVERTRAVEL (SOFT 3 )
OT 006 – OVERTRAVEL (SOFT 3 )
OT 007 + OVERTRAVEL (HARD)
OT 008 – OVERTRAVEL (HARD)
OT 0021 + OVERTRAVEL (PRE CHECK)
OT 022 – OVERTRAVEL (PRE CHECK)
OT 032 NEED ZRN(ABS PCDR)
OT 100 SPINDLE ALARM
OT 101 SPINDLE MOTOR OVERHEAT
OT 102 EXCESS VELOCITY ERROR
OT 103 FUSE F7 BLEW
OT 104 FUSE F1,F2 OR F3 BLEW
OT 105 FUSE AF2 OR AF3 BLEW
OT 106 EXCESS VELOCITY DIGITAL
OT 107 EXCESS VELOCITY DIGITAL
OT 108 VOLTAGE (+24V) TOO HIGH
OT 109 POWER SEMICONDUCTOR OVERLOAD
OT 110 VOLTAGE (+15V) TOO LOW
OT 111 VOLTAGE EXCESS
OT 112 CURRENT EXCESS (DC LINK)
OT 114 ROM ERROR
OT 115 OPTION ALARM
OT 116 DISCONNECTION POS CODER
OT 120 UNASSIGNED ADDRESS (HIGH)
OT 121 UNASSIGNED ADDRESS (LOW)
OT 122 TOO MANY MESSAGE
OT 123 MESSAGE NUMBER NOT FOUND
OT 124 OUTPUT REQUEST ERROR
OT 125 TOO LARGE NUMBER
OT 126 SPECIFIED NUMBER NOT FOUND
OT 127 DI.EIDHW OUT OF RANGE
OT 128 DI.EIDLL OUT OF RANGE
OT 129 NEGATE POS CODER 1 REV ON
OT 130 SEARCH REQUEST NOT ACCEPTED
OT 132 RETURN ERROR (PTRR)
OT 150 A/D CONVERT ALARM
OT 151 A/D CONVERT ALARM

Servo Alarms

Alarm Code Description of Alarm/Error
SV 000 TACOGENERATOR DISCONNECT
SV 001 EXCESS CURRENT IN SERVO
SV 002 BREAKER OFF
SV 003 ABNORMAL CURRENT IN SERVO
SV 004 EXCESS V TO MOTOR
SV 005 EXCESS DISCHARGE I FROM MOTOR
SV 006 VELCTY UNIT POWER TOO LOW
SV 008 EXCESS ERROR (STOP)
SV 009 EXCESS ERROR (MOVING)
SV 010 EXCESS DRIFT COMPENSATION
SV 011 LSI OVERFLOW
SV012 MOTION VALUE OVERFLOW
SV013 IMPROPER V READY OFF
SV014 IMPROPER V-READY ON
SV015 PULSE CODER DISCONNECT
SV017 ILL POSITION CONTROL LSI
SV018 UNFIT DSOG FREQUENCY
SV019 UNFIT PULSE OF PULSE CODER
SV020 UNFIT FASE SHIFT VALUE
SV021 UNFIT FASE SHIFT VALUE
SV 022 PULSE CODER 1 REV MISSING
SV 023 SV OVER LOAD
SV 025 V-READY ON
SV 026 ILLEGAL AXIS ARRANGE
SV 030 EMERGENCY STOP
SV 100 S-COMP VALUE OVERFLOW
SV 101 DATA ERROR (ABS PCDR)

Bảng mã lỗi bộ điều khiển Fanuc 15 Series

Alarm Code Type Description of Alarm/Fault
SV 000 TACHOGENERATER DISCONNECT The tachogenerator is disconnected.
SV 001 EXCESS CURRENT IN SERVO The servo motor was overloaded.
SV 002
BREAKER (FEED_CTL_UNIT) OFF The breaker for the velocity control ciruit tripped.
SV 003 ABNORMAL CURRENT IN SERVO Excessive current was detected in the velocity control circuit.
SV 004 EXCESS V TO MOTOR Excessive current was detected in the velocity control circuit.
SV 005 EXCESS DISCHARGE I FROM MOTOR Excessive discharge current from the motor was detected in the velocity control circuit.
SV 006 VELOCITY UNIT POWER TOO LOW Low voltage was detected in the velocity control circuit.
SV 008 EXCESS ERROR ( STOP) Position deviaton when stopped is larger than the value set in parameter No. 1829
SV 009 EXCESS ERROR (MOVING) Position deviaton when stopped is larger than the value set in parameter No. 1828
SV 0010 EXCESS DRIFT COMPENSATION Drift compensation is excessive ( exceeded 500VELO)
SV 011 LSI OVERFLOW The value specified for position deviation compensation is not within the range of -32767 to +32767, or the command value of the D/A converter is not within the range of -8192 to +8192. In general, this alarm occurs to incorrect settings.
SV 012 MOTION VALUE OVERFLOW A speed greater than 512,000 pulses per second ( frequency converted into detection units) was specified. In general, this alarm occurs to incorrect setting of parameter CMR or the feedrate.
SV 013 IMPROPER V-READY OFF The speed control ready signal ( VRDY) went off even though the position control ready signal (PRDY) was on. When a multiaxis amplifier is being used, specifying controlled axis detatchment for any axis driven by the amplifier causes alarm SV013 to be issued from the other axes driven by that amplifier.
SV 014 IMPROPER V READY ON The speed control ready signal (VRDY) went on even though the position control ready signal (PRDY) was off.
SV 015 PULSE CODER DISCONNECTED  The pulse coder is disconnected.
SV 017 ILL POSITION CONTROL LSI A fault occured in the LSI for position control.
SV 018 INCORRECT DSCG FREQUENCY A fault was detected in a resolver or inductsyn feedback frequency.
SV 019 INCORRECT PULSE CODER PULSE A fault was detected in the feedback pulse from the pulse coder.
SV 020 INCORRECT PHASE SHIFT VALUE The resolver or induction phase shift cannot be obtained correctly.
SV 021 1-REV PULSE SIGNAL INCORRECT The single revolution signal for the pulse coder went on at an incorrect position
SV 022 1-REV PULSE MISSING  The single revolution signal for the pulse coder went on at an incorrect position
SV 023 SV OVERLOAD A servo motor overloaded
SV 024 EXCESS ERROR ALARM 2 Alarm 2 for excess synchronous error was generated.
SV 025 V-READY ON (INITIALIZING) During servo control, the speed control ready signal ( VRDY) is on even though it is supposed to be off.
SV 026 ILLEGAL AXIS ARRANGEMENT Parameter NO. 1023 for specifying the arrangement of servo axes is set incorrectly.
SV 027 ILL DGTL SERVO PARAMETER There is an illegal digital servo parameter.

  • A correct motor model type is not set in parameter NO. 1874
  • The number of pulses per motor rotation is not set in parameter NO. 1876
  • The direction of motor rotation set in parameter NO. 1879 is neither 111 nor -111.
SV 030 EMERGENCY STOP Emergency stop occured ) when ENR, a bit of parameter NO. 2001, is 1)
SV 031 EXCESS SPINDLE DIST ( SPDL) Excess position deviation occured for the spindle during rigid tapping.
SV 032 LSI OVERFLOW (SPDL) Data for the LSI used for spindle control overflowed during rigid tapping.
SV 050 ILLEGAL AXIS SYNCHRONZIATION Parameter No. 1023 is set incorrectly.
SV 055 Parameter No. 1023 is set incorrectly.
SV 056 Bit#6 of parameter NO. 1817 is set incorrectly.
SV 99
SPINDLE AXIS ERROR An amplifier alarm occured during spindle contour control.
SV 100
SACOMP, VALUE OVERFLOW The value set for straightness compensation is not withink the range of -32767 to +32767.
SV 101
DATA ERROR (ABS PCDR) A correct machine position cannot be obtained because the absolute pulse coder is faulty or the machine moved far during power on.
SV 110
PULSE CORDER ALARM (SERIAL A) An error was detected in the serial pulse coder ( seriall C) or feedback cable.
SV 111
PULSE CORDER ALARM (SERIAL C) The serial pulse coder is abnormal.
SV 114
ABNORMAL REV.DATA (SERIAL A) The serial pulse coder (Serial A) is abnormal.
SV 115
ABNORMAL COMMUNICATION(SPLC) A serial pulse coder communication failure occured.
SV 116
MCC WELDING ALARM The contact of the magnectic contractor (MCC) in the servo amplifier has melted.
SV 117 ABNORMAL CURRENT OFFSET Digital servo current conversion is abnormal.
SV 118
DETECT ABNORMAL TORQUE An abnormal servo motor load was detected.
SV 119
DETECT ABNORMAL TORQUE (1ST SPDL) An abnormal load was detected on the first spindle motor.
SV 125
EXCESS VELOCITY IN TORQUE In torque control, the specified maximum allowable velocity was exceeded.
SV 126
EXCESS ERROR IN TORQUE In torque control, the maximum allowable accumlated movement specified with a parameter was exceeded.
SV 323
DISCONNECT ALARM BY SOFT Disconnection of the serial pulse coder was detected. ( Software)
SV 324
DISCONNECT ALARM BY HARD Disconnection of the serial pulse coder was detected. ( Hardware)
SV 325
PULSE CODER ALARM1 (SPLC) An abnormality was detected in the serial pulse coder or feedback cable ( Built in unit)
SV 326
PULSE CODER ALARM3 (SPLC) An abnormality was detected in the serial pulse coder or feedback cable ( Built in unit)
SV 327
ABNORMAL REV.DATA (SPLC) The serial pulse coder is abnormal. Replace the pulse coder ( Built in unit)
SV 330
ABNORMAL COMMUNICATION (SPLC) A serial pulse coder communication error occured ( Built in unit)
SV 331
PULSE CODER ALARM2 (SPLC) An abnormality was detected in the serial pulse coder or feedback cable. ( Built in unit)
SV 333
PULSE CODER ALARM4  (EX-LIN) An abnormality was detected in the serial pulse coder or feedback cable. ( seperate linear)
SV 334
PULSE CODER ALARM5 (EX-ROT) An abnormality was detected in the serial pulse coder or feedback cable. ( seperate rotary)
SV 335
ABNORMAL REV.DATA ( EX-ROT) The serial pulse coder is abnormal.
SV 336
BATTERY ZERO (EX)  The serial pulse coder battery voltage is 0V. ( Seperate unit)
SV 338
DETECTOR OVERLOAD (EX)  The serial pulse coder is overloaded ( Seperate unit ).
SV 339
ABNORMAL COMMUNICATION ( EX) A communication error occured in the serial pulse coder ( Seperate unit)
SV 340
PULSE CODER DISCONNECT ( EX) Disconnection of the serial pulse coder was detected ( Seperate unit).

PC Error Alarms

Alarm Code
PC 010 PC ERROR A parity error occured in a PMC ROM.
PC 020 PC ERROR A parity error occured in a PMC RAM.
PC 030 PC ERROR An I/O unit was not allocated correctly.
PC 500 WATCH DOG ALARM A PMC watch dog alarm occured.

Memory File Alarms

Alarm Code Type  Description of Alarm/Fault
IO 030 CHECK SUM ERROR The check sum for a page of NC memory is incorrect.
IO 031 INVALID CODE An invalid code was read from NC memory.
IO 032 OUT OF RANGE MEMORY An attempt was made to read data from or write data to an address outsid of bubble memory.

Power Off Alarms

Alarm Code  Type  Description of Alarm/Fault
PW 000 POWER MUST BE OFF A parameter was set for which the power must be turned off and then on again.
PW 100 ILLEGAL PARAMETER The parameter for setting straightness compensation or the parameter for setting inclination compensation is specified incorrectly.

Graphic RAM Parity Alarms

Alarm Code Type Description of Alarm/Fault
SB 010 GRAPHIC RAM PARITY A parity error occured in the graphic ROM .
SB 011 GRAPHIC RAM PARITY (WORK) A parity error occured in the graphic work ROM.
SB 011 GRAPHIC RAM PARITY (RED) A parity error occured in the RAM for red graphics.
SB 011 GRAPHIC RAM PARITY (GREEN) A parity error occured in the RAM for green graphics.
SB 011 GRAPHIC RAM PARITY (BLUE) A parity error occured in the RAM for blue graphics.

Parameter Alarms

Alarm Code Type Description of Alarm/Fault
SW 000 PARAMETER ENABLE SWITCH ON Parameter setting is enabled. ( PWE, a bit of parameter NO. 8000 is 1)

Overtravel Alarms

Alarm Code Type Description of Alarm/Fault
OT 001 + OVERTRAVEL (SOFT1)  Coordinates specified in an absolute or machine coordinate system are out of range.
OT 002 – OVERTRAVEL (SOFT1)
OT 003 + OVERTRAVEL (SOFT1)
OT 004 – OVERTRAVEL (SOFT1)
OT 005 + OVERTRAVEL (SOFT1)
OT 006 – OVERTRAVEL (SOFT1)
OT 007 + OVERTRAVEL (SOFT1)
OT 008 – OVERTRAVEL (SOFT1)
OT 021 + OVERTRAVEL (SOFT1)
OT 022 – OVERTRAVEL (SOFT1)
OT 030 EXCESS ERROR ALARM 1
OT 031 SYNCHRONIZE ADJUST MODE
OT 032 NEED ZRN (ABS PCDR)  The counter value of the absolute pulse coder does not match the machine coordinates.
OT 034 BATTERY ZERO (ABS PCDR)  The battery voltage of the absolute pulse coder is 0V.
OT 036 BATTERY DOWN (SPLC)  The battery voltage of the serial pulse coder is low.
OT 037 BATTERY DOWN (EX)  The battery voltage of the additional detector is low.
OT 038 BATTERY ZERO (SPLC)  The serial pulse coder battery voltage is 0V
OT 039 BATTERY ZERO (EX) The serial pulse coder battery voltage is 0V
OT 100 SPINDLE ALARM  The serial pulse coder battery voltage is 0V
OT 101 SPINDLE MOTOR OVERHEAT The spindle motor overheated
OT 102 EXCESS VELOCITY (ANALOG)
OT 103 FUSE F7 BLEW  Fuse F7 for the speed control unit of the spindle motor has blown.
OT 104 FUSE F1, F2, OR F3 BLEW  Fuse F1, F2, F3 for the speed control unit of the spindle motor has blown.
OT 105 FUSE AF2 OR AF3 BLEW  Fuse AF2 or AF3 for the speed control unit of the spindle motor has blown.
OT 106 EXCESS VELOCITY (ANALOG)  The speed of the spindle motor exceeded the max rating .
OT 107 EXCESS VELOCITY (DIGITAL)  The speed of the spindle motor exceeded the max rating .
OT 108 VOLTAGE (+24V) TOO HIGH  The voltage of thee 24V power supply for the speed control unit of the spindle is too high.
OT 109 POWER SEMICONDUCTOR OVERLOAD  The power semiconductor overheated.
OT 110 VOLTAGE (+15) TOO LOW  The voltage of the 15V power supply for the speed control unit of the spindle is too low.
OT 111 VOLTAGE EXCESS (DC LINK)  The voltage in the DC link for the speed control unit of the spindle motor is too high.
OT 112 CURRENT EXCESS LINK (DC LINK)  The current in the DC link for the speed control unit of the spindle motor is excessive.
OT 113 CPU ERROR  The CPU or peripheral circuit of the speed control unit of the spindle motor is faulty.
OT 114 ROM ERROR  The ROM of the speed control unit if the spindle motor is faulty.
OT 115 OPTION ALARM Optional alarm for the spindle motor
OT 116 DISCONNECTION POS CODER  The position coder is disconnected
OT 117 SPINDLE OVERHEAT  Spindle alarm was detected by the function for detecting fluctuations in spindle speed.
OT 120 UNASSIGNED ADDRESS (HIGH)  The upper four bits (EIA4 to EIA7) of an external data I/O interface address signal are set to an undefined address (high bits).
OT 121 UNASSIGNED ADDRESS (LOW)  The lower four bits (EIA0 to EIA3) of an external data I/O interface address signal are set to an undefined address (low bits).
OT 122 TOO MANY MESSAGES  Requests were made to display more than four external operator messages or external alarm messages at the same time.
OT 123 MESSAGE NUMBER NOT FOUND  An external operator message or external alarm message cannot be cancelled because no message number is specified.
OT 124 OUTPUT REQUEST ERROR  An output request was used during external data output, or an output request was issued for an address that has no output data.
OT 125 TOO LARGE NUMBER  A number outside of the range 0 to 999 was specified as the number for an external operator message or an external alarm message.
OT 126 SPECIFIED NUMBER NOT FOUND This alarm occurs in the following cases:The number specified for a program number or sequence number search during external data input could not be found.

The number specified for a work piece number search could not be found.

There was an I/O request issued for a pot number or offset, but either no tool numbers have been input since power on or there is no data for the entered tool number.

OT 127 DI.EIDHW OUT OF RANGE   The value input by external data input signals EID32 to EID47  is out of range.
OT 128 DI.EIDLL OUT OF RANGE  The value input by external data input signals EID0 to EID31  is out of range.
OT 129 NEGATE POS CODER 1 REV ON  The CPU or peripheral circuit of the position coder is faulty.
OT 130 SEARCH REQUEST NOT ACCEPTED  No request can be accepted for a program No or sequence No search because the system is not in memory mode or the reset state.
OT 131 EXT-DATA ERROR (OTHER)  An input request was received for a pot No or offset value while tool data was being registered with G10.An error occurred during reading or writing of tool data.
OT 132 RETURN ERROR (PTRR) The tool did not return to the stored position along the axis in tool retraction mode.
OT 150 A/D CONVERT ALARM  The A/D converter is faulty
OT 151 A/D CONVERT ALARM  The A/D converter is faulty
OT 184 PARAMETER ERROR IN TORQUE  An invalid parameter was specified for torque control.
OT 200 INTERFERENCE DATA ERROR  The tool figure specified for the tool post interference check is incorrect.
OT 208 INTERFERENCE X1 MINUS  An interference  alarm occurred while the first tool post was moving in the negative direction along the X axis
OT 209 INTERFERENCE X1 PLUS  An interference  alarm occurred while the first tool post was moving in the positive direction along the X axis
OT 210 INTERFERENCE Z1 MINUS  An interference  alarm occurred while the first tool post was moving in the negative direction along the Z axis
OT 211 INTERFERNCE Z1 PLUS  An interference  alarm occurred while the first tool post was moving in the positive direction along the Z axis
OT 212 INTERFERENCE X2 MINUS  An interference  alarm occurred while the second tool post was moving in the negative direction along the X axis
OT 213 INTERFERENCE X2 PLUS  An interference  alarm occurred while the second tool post was moving in the positive direction along the X axis
OT 214 INTERFERENCE Z2 MINUS  An interference alarm occurred while the second tool post was moving in the positive negative along the Z axis
OT 215 INTERFERENCE Z2 PLUS  An interference  alarm occurred while the second tool post was moving in the positive direction along the Z axis
OT 300 S-SPINDLE LSI ERROR  An error occurred in communication with spindle
OT 301 MOTOR OVERHEAT  Motor overheat
OT 302 EX DEVIATION SPEED  Excessive deviation in speed
OT 307 OVER SPEED  Excessive speed
OT 309 OVERHEAT MAIN CIRCUIT  Excessive load on the main circuit
OT 310 LOW VOLT INPUT POWER  Low voltage in the input power supply
OT 311 OVERVOLT POW CIRCUIT  Excessive voltage in the DC link
OT 312 OVERCURRENT POW CIRCUIT  Excessive current in the DC Link
OT 313 DATA MEMORY FAULT CPU  Error in CPU internal data memory
OT 318 SUMCHECK ERROR PGM DATA  Sum check error in ROM
OT 319 EX OFFSET CURRENT U  Excessive offset in U phase current detection circuit.
OT 320 EX OFFSET CURRENT V  Excessive offset in V phase current detection circuit.
OT 324 SERIAL TRANSFER ERROR  Error in serial  data transfer
OT 325 SERIAL TRANSFER STOP  Serial data transfer was stopped
OT 326 DISCONNECT C-VELO DETECT  The Cs axis control speed detection signal is disconnected
OT 327 DISCONNECT POS-CODER  The position coder is disconnected
OT 328 DISCONNECT C-POS DETECT  The Cs axis control speed detection signal is disconnected
OT 329 OVERLOAD  Temp overload
OT 330 OVERCURRENT POWER CIRCUIT  Excessive current in input circuit
OT 331 MOTOR LOCK OR V-SIG LOS  The motor locked up alarm is issued or the speed detection signal is disconnected
OT 332 RAM FAULT SERIAL LSI  Faulty RAM exists in LSI for serial data transfer
OT 333 SHORTAGE POWER CHARGE  Insufficient power charge in DC link
OT 334 PARAMETER SETTING ERROR  Parameter data is out of range
OT 335 EX SETTING GEAR RATIO  An excessive gear ration was set
OT 336 OVERFLOW ERROR COUNTER  The error counter overflowed
OT 399 S-SPINDLE ERROR  Misc spindle amplifier alarm has occured
OT 512 EXCESS VELOCITY  The feedrate specified during polar coordinate interpolation mode was greater than the max cutting feedrate.
OT 513 SYNC EXCESS ERROR  The difference between the positional deviations for the synchronized axes during simple synchronization was greater than the limit set in the parameter.
OT 513 SYNC EXCESS ERROR The difference between the master and the slave axes to be synchronized with each other has exceeded the maximum compensation.

SR Alarms

Alarm Code Type Description of Alarm/Fault
SR 160 INTERNAL DATA OVER FLOW Coordinates specified in an absolute or machine coordinate system are out of range.
SR 310 H, S , C ERROR  G10.3, G11.3 or G65.3 is used incorrectly.
SR 311 H, S , C ERROR  A command not permitted during high speed machining was specified.
SR 312 H, S , C ERROR Address P, Q or L is out of range.
SR 313 H, S , C ERROR  High speed machining data does not exist for the number that was called.
SR 314 H, S , C ERROR No cluster exists for the number that was called.
SR 315 H, S , C ERROR An attempt was made to register a number for which high speed machining data already exists.
SR 316 H, S , C ERROR  Memory is full.
SR 317 H, S , C ERROR  The maximum number of sets of high speed machining data has been registered.
SR 318 H, S , C ERROR  An attempt was made to register high speed machining data during background editing.
SR 319 H, S , C ERROR  There is an error in the format of high speed machining data.
SR 320 H, S , C ERROR A macro interrupt occurred during high speed machining.
SR 424 OVER MAXIMAM TOOL DATA  An attempt was made to register new tool data even though the maximum number of sets of tool data has already been set.
SR 590 TH ERROR  TH alarm.
SR 591 TV ERROR  TV alarm
SR 592 END OF RECORD  EOR ( END OF RECORD) was specified partway though a block.
SR 600 PARAMETER OF RESTART ERROR There is an error in the specification of the program restart parameter.
SR 805 ILLEGAL COMMAND An attempt was made to used an illegal command for the reader /punch interface.
SR 806 DEVICE TYPE MISMATCH  An attempt was made to use a command which is invalid for the currently selected I/O device.
SR 807 PARAMETER SETTING ERROR An I/O interface which was not selected as an option was specified, or the settings or parameters are set incorrectly.
SR 810 PTR NOT READY The ready signal for the tape reader is off.
SR 812 OVERRUN ERROR (PTR) The next character was received by the tape reader before it could read a previously received character.
SR 820 DR OFF (1) The data set ready signal for reader/punch interface 1 went off.
SR 821 CD OFF (1) The signal quality detection signal for reader /punch interface 1 went off.
SR 822 OVERRUN ERROR (1)  The next character was received by puncher/punch interface 1 before it could read a previously received character.
SR 823 FRAMING ERROR (1)  No stop bit was detected for a character received by reader/punch interface 1.
SR 824 BUFFER OVERFLOW(1)  The NHC received more than ten characters of data from reader/punch interface 1 even though NC sent a stop mode during data reception.
SR 830 DR OFF (2) The data set ready signal for reader/punch interface 2 went off.
SR 831 CD OFF(2) The signal quality detection signal for reader /punch interface  2 went off.
SR 832 OVERRUN ERROR(2)  The next character was received by reader/punch interface 2 before it could read a previously received character.
SR 833 FRAMING ERROR(2)  No stop bit was detected for a character received by the reader/punch interface 2
SR 834 BUFFER OVERFLOW(2)  The NC received more than ten characters of data from reader/punch interface 2 even though the NC sent a stop code during data reception.
SR 840 DR OFF(3)  The data set ready signal for reader/punch interface 2 went off.
SR 841 DC OFF (3)  The signal quality detection signal for reader/punch interface 3 went off.
SR 842 OVERRUN ERROR(3)  The next character was received by reader/punch interface 3 before it could read a previously read character.
SR 843 FRAMING ERROR(3) No stop bit was detected for a character received by reader/punch interface 3.
SR 844 BUFFER OVERFLOW(3)  The NC received more than ten characters of data from reader/punch interface 3 even though the NC sent a stop code  during data reception.
SR 860 DATA SET READY DOWN(ASR33/43)  The data set ready signal for the 20mA current loop interface went off.
SR 861 CARRIER DETECT DOWN(ASR33/43)  The signal quality detection signal for the 20mA current loop interface went off.
SR 862 OVERRUN ERROR(ASR33/43)  The next character was received by the 20mA current loop interface before it could read a previously received character.
SR 863 FRAMING ERROR(ASR33/43)  No stop bit was detected for a character received by the 20mA current loop interface.
SR 864 BUFFER OVERFLOW(ASR33/43)  The NC received more than ten characters of data from the 20mA current loop interface even though the  NC sent a stop code during data reception.
SR 870 DATA SET READY DOWN  The data mode signal for the RS-422 interface went off.
SR 872 OVERRUN ERROR (RS422)  The next character was received by the RS-422 interface before it could read a previously received character.
SR 873 FRAMING ERROR (RS422)  No stop bit was detected for a character received by the RS-422 interface.
SR 874 BUFFER OVERFLOW (RS422)  The NC received more than ten characters of data fro the RS-422 interface even though the NC sent a stop code during data reception.
SR 880 NOT DRAWING  Communication cannot be made with the graphic CPU.
SR 890 CHECK SUM ERROR (G05)  A check sum error occured ( high speed remote buffer)

PMC Alarms

Alarm Code Description of Alarm/Fault
ALARM NOTHING Normal Status
ER00 PROGRAM DATA ERROR (ROM) The sequence program in the ROM is not written correctly.
ER01 PROGRAM DATA ERROR (RAM) The sequence program in the debugging RAM is defective
ER02 PROGRAM SIZE OVER The size of sequence program exceeds the maximum size of  LADDER (PMC-RC only)
ER03 PROGRAM SIZE ERROR (OPTION) The size of sequence program exceeds the option specification size.
ER04 PMC TYPE UNMATCH The PMC model setting of the sequence program is not corresponding to an actual model.
ER05 PMC MODULE TYPE ERROR The module type of the PMC engine is not correct.
ER06 PROGRAM MODULE NOTHING Both ROM for sequence program and the debugging RAM do not exist (PMC-RC only).
ER07 NO OPTION (LADDER STEP) There is no step number option of LADDER.
ER 16 RAM CHECK ERROR (PROGRAM RAM) The debugging RAM cannot be read/written normally.
ER17 PROGRAM PARITY The parity error occured on the ROM for sequence program or the debugging RAM.
ER18 PROGRAM DATA ERROR BY I/O Transferring the sequence program from offline programmer was interrupted by the power off etc.
ER19 LADDER DATA ERROR Editing the LADDER was interrupted by the power off or by the switch to the CNC screen by the function key etc.

Background Edit Alarm

Alarm Code Type Description of Alarm/Fault
???? BP/S alarm BP/S alarm occurs in the same number as the P/S alarm that occurs in ordinary program edit. ( 070, 071, 072, 073, 074, 085, 086, 087 etc)
140 BP/S alarm It was attempted to select or delete in the background of a program being selected in the foreground ( Note: Use background editing correctly)

Note: Alarm in background is displayed in the key input line of the background edit screen instead of the ordinary alarm screen and is resettable by any of the MDI key operation.

Absolute Pulse Coder (APC) Alarm

Alarm Code Type Description of Alarm/Fault
300 nth-axis origin return Manual reference position return is required for the nth axis (n=1-8)
301 APM alarm: nth axis communication nth axis (n=1-8) APC communications error. Failure in data transmission.
302 APM alarm: nth axis over time nth axis (n=1-8) APC overtime error. Failure in data transmission.
303 APM alarm: nth axis framing nth axis (n=1-8) APC framing error. Failure in data transmission.
304 APM alarm: nth axis parity nth axis (n=1-8) APC parity error. Failure in data transmission.
305 APM alarm:  nth axis pulse error nth axis (n=1-8) APC pulse error alarm. APC alarm.
306 APM alarm: nth axis battery voltage 0 nth axis (n=1-8) APC battery voltage has decreased to a low level so that the data cannot be held.
307 APM alarm: nth axis battery low 1 nth axis (n=1-8) APC battery voltage reaches a level where the battery must be renewed.
308 APM alarm: ntha xis battery low 2 nth axis (n=1-8) APC battery voltage has reached a level where the battery must be renewed. (including when the power is off).
309 (b) (c)
APC Alarm: n AXIS ZRN IMPOSSIBL Return to the origin has been attempted without first rotating the motor one of more times. Before returning to the origin, rotate the motor one or more times then turn off the power.

Serial Pulse Coder (SPC) alarms

Alarm Code Type Description of Alarm/Fault
350 SPC ALARM: n AXIS PULSE CODER The n axis ( axis 1-8) pulse coder has a fault.
351 SPC ALARM: n AXIS COMMUNICATION  n axis ( axis 1-8) serial pulse coder communciation error ( data transmission fault).

Servo Alarms

Alarm Code Type Description of Alarm/Fault
400 SERVO ALARM: n-TH AXIS OVERLOAD The n-th axis (axis 1-8) overload signal is on.
401 SERVO ALARM: n-TH AXIS VRDY The n-th xis (axis 1-8) servo amplifier READY signal (DRDY) went off.
404 SERVO ALARM: n-TH VRDY ON Even though the n-th axis ( axis 1-8) READY signal (MCON) went off the servo amplifier READY signal (DRDY) is still on. Or when the power was turned on, DRDY went on even though MCON was off.
405 SERVO ALARM: ZERO POINT RETURN FAULT Position control system fault. Due to an NC or servo system fault in the reference position return, there is the possiblity that the reference position return could not be executed correctly.
407 SERVO ALARM: EXCESS ERROR The difference in synchronous axis position deviation exceeded the set value.
409 (b) (c)
SERVO ALARM: n AXIS TORQUE ALARM Abnormal servo motor load has been detected. Alternatively, abnormal spindle motor load has been detected in Cs mode.
410 SERVO ALARM: n-TH AXIS EXCESS ERROR The position deviation value when the n-th axis( axis 1-8) stops is larger than the set value.
411 SERVO ALARM: n-TH AXIS EXCESS ERROR The position deviation value when the n-th axis( axis 1-8) moves is larger than the set value.
413 SERVO ALARM: n-TH AXIS LSI OVERFLOW The contents of the error register for the n-th axis ( axis 1-8) exceeded + or -2 31  power. This error usually occurs due to the result of incorrectly set parameters.
414 SERVO ALARM: n-TH AXIS DETECTION RELATED ERROR N-th axis ( axis 1-8) digital servo system fault.
415 SERVO ALARM: n-TH AXIS EXCESS SHIFT A speed higher than 511875 units/s was attempted to be set in the n-th axis ( axis 1-8). This error occurs as the result of an improperly set CMR.
416 SERVO ALARM: n-TH AXIS DISCONNECTION Position detection system fault in the n-th axis ( axis 1-8) pulse coder ( disconnection alarm).
417 SERVO ALARM: n-TH AXIS PARAMETER INCORRECT This alarm occurs when the n-th axis ( axis 1-8) is in one of the conditions listed below ( Digital servo system alarm).

  1. The value set in Parameter No  2020 (motor form) is out of the specified limit.
  2. A proper value ( 111 0r -111) is not set in parameter No 2022 (motor revolution direction).
  3. Illegal data ( a value below 0, etc) was set in parameter N0.2023 ( number of speed feedback pulses per motor revolution).
  4. Illegal data ( a value below 0, etc) was set in parameter No.2024 ( number of position feedback pulses per motor revolution).
  5. Parameters No. 2084 and No.2085 ( flexible field gear rate) have not been set.
  6. A value outside the limit of {1 to the number of control axes} or a non continuous value ( Parameter 1023 ( servo axis number) contains a value out of the range from 1 to the number of axes, or an isolated value ( for example, 4 not preceeded by 3), was set in parameter No. 1023 ( servo axis number).
420 (b) (c)
SERVO ALARM: n AXIS SYNC TORQUE (M Series) During simple synchronous control, the difference between the torque commands for the master and slave axes exceded the value set in parameter No 2031.
421 (b) (c)
SERVO ALARM: n AXIS EXCESSER (D) The difference between the errors in the semi closed loop and closed loop has become excessive during dual positon feedback.

Over Travel Alarms

Alarm Code Type Description of Alarm/Fault
500 OVER TRAVEL:   +n Exceeded the n-th axis ( axis 1-8) + side stored stroke limit I.
501 OVER TRAVEL:     -n  Exceeded the n-th axis ( axis 1-8) – side stored stroke limit I.
502 OVER TRAVEL:    +n  Exceeded the n-th axis ( axis 1-8) + side stored stroke limit II.
503 OVER TRAVEL :    -n  Exceeded the n-th axis ( axis 1-8) – side stored stroke limit II.
504 OVER TRAVEL:     +n  Exceeded the n-th axis ( axis 1-8) + side stored stroke limit III.
505 OVER TRAVEL:     -n  Exceeded the n-th axis ( axis 1-8) – side stored stroke limit III.
506 OVER TRAVEL:     +n  Exceeded the n-th axis ( axis 1-8) + side hardware OT.
507 OVER TRAVEL:     -n  Exceeded the n-th axis ( axis 1-8) – side hardware OT.
508 INTERFERENCE : +n  A tool moving in the positive direction along the n axis has fouled another tool post.
509 INTERFERENCE:   -n  A tool moving in the negative direction along the n axis has fouled another tool post.
510 OVER TRAVEL:    +n  Alarm for stroke check prior to movement. The end point specified in a block falls within the forbidden area defined with the stroke limit in the positive direction along the N axis. Correct the program.
511 OVER TRAVEL:   -n  Alarm for stroke check prior to movement. The end point specified in a block falls within the forbidden area defined with the stroke limit in the negative direction along the N axis. Correct the program.

Overheat Alarms

Alarm Code Type Description of Alarm/Fault
700 OVERHEAT: CONTROL UNIT Control unit overheat
701 OVERHEAT: FAN MOTOR The fan motor on top of the cabinet for the control unit is overheated.
704 OVERHEAT: SPINDLE Spindle overheat in the spindle fluctuation detection.

Rigid Tapping Alarms

740 RIGID TAP ALARM: EXCESS ERROR The positional deviation of the stopped spindle has exceeded the set value during rigid tapping.
741 RIGID TAP ALARM: EXCESS ERROR The positional deviation of the stopped spindle has exceeded the set value during rigid tapping.
742 RIGID TAP ALARM: LSI OVERFLOW An LSI overflow has occured for the spindle during rigid tapping.

Serial Spindle Alarms

Alarm Code Type Description of Alarm/Fault
749  S-SPINDLE LSI ERROR  It is serial communication error while system is executing after power supply on.
750 SPINDLE SERIAL LINK START FAULT  This alarm is generated when the spindle control unit is not ready for starting correctly when the power is turned on in the system with the serial spindle.
751 FIRST SPINDLE ALARM DETECTION ( AL-XXX)  This alarm indicates in the NC that an alarm is generated in the spindle unit of the system with serial spindle. The alarm is displayed in form AL-XX ( XX is a number).
752  FIRST SPINDLE MODE CHANGE  This alarm is generated if the system does not properly terminate a mode change.
754 SPINDLE 1 ABNORMAL TORQUE ALARM  Abnormal first spindle motor load has been detected.
761 SECOND SPINDLE ALARM DETECTION (AL-XXX)  Refer to alarm No 751
762  SECOND SPINDLE MODE CHANGE FAULT  Refer to alarm No 752
764  SPINDLE-2 ABNORMAL TORQUE ALARM  Same as alarm No 754
771 SPINDLE-3 ALARM DETECT (AL-XXX)  Same as alarm No 751
772 SPINDLE- 3 MODE CHANGE ERROR  Same as alarm No 752
774 SPINDLE 3- ABNORMAL TORQUE ALARM  Same as alarm No 754

System Alarms ( These alarms cannot be reset with a reset key)

Alarm Code Type Description of Alarm/Fault
900 ROM PARITY ROM parity error (CNC/OMM/Servo). Replace the number of ROM.
910 ROM PARITY : (4N) RAM parity error in the tape memory RAM module. After this operation reset all the data including the parameters.
911 ROM PARITY : (4N+1) RAM parity error in the tape memory RAM module.After this operation reset all the data including the parameters.
912 ROM PARITY : (4N+2) RAM parity error in the tape memory RAM module. After this operation reset all the data including the parameters.
913 ROM PARITY : (4N+3) RAM parity error in the tape memory RAM module. After this operation reset all the data including the parameters.
914 (b) (c)
SRAM PARITY: (2N) A RAM  parity error occured in RAM for part program storage or additional SRAM. Clear the memory, or replace the main CPU board or additional SRAM. Then set all data including  parameters again.
915 (b) (c)
SRAM PARITY: (2+1) A RAM  parity error occured in RAM for part program storage or additional SRAM. Clear the memory, or replace the main CPU board or additional SRAM. Then set all data including  parameters again.
916 (b) (c)
DRAM PARITY RAM parity error in DRAM module. Replace the DRAM module.
920 SERVO ALARM (1/2 AXIS) Servo alarm (3rd or 4th axis). A wathdog alarm or RAM parity error in the servo module occured. Replace the servo control module on the main CPU board.
920 (b)
SERVO ALARM (1/2/3/4 AXIS) Servo alarm (1st to 4th axis). A wathdog alarm or RAM parity error in the servo module occured.
920 (c) SERVO ALARM (MAIN) Servo alarm (main CPU board). A watchdog alarm or a RAM parity error in the servo module occured. Replace the servo control module on the main CPU board.
921 SERVO ALARM (3/4 AXIS) Servo alarm (3rd or 4th axis). A watchdog alarm or a RAM parity error in the servo module occured. Replace the servo control module on the main CPU board.
922 SERVO ALARM (5/6 AXIS) Servo alarm (5th or 6th axis). A watchdog alarm or a RAM parity error in the servo module occured. Replace the servo control module on the option 2 board.
922 (b) SERVO ALARM (5/6/7/8 AXIS) Servo alarm (5th to  8th axis). A watchdog aalrm or a RAM parity error in the servo module occured.
922 (c) SERVO ALARM (OPT2) Servo alarm (option 2 board). A watchdog alarm or a RAM parity error in the servo module occured. Replace the servo control module on the option 2 board.
923 SERVO ALARM (7/8 AXIS) Servo alarm (7th or 8th axis). A watchdog alarm or a RAM parity error in the servo module occured. Replace the servo control module on the option 2 board.
924 SERVO MODULE SETTING ERROR The digital servo module is not installed. Check that the serbo module or servo interface module on the main CPU or option 2 board is mounted securely.
926 (b)
SERVO ALARM (1/2/3/4/5/6/ AXIS) Servo alarm ( 1st to 6th axis). A watchdog alarm was issued, or a RAM parity error occured in the servo module.
930 CPU INTERRUPT CPU error ( abnormal interrupt). The main CPC board is faulty.
945 SERIAL SPINDLE COMMUNICATION ERROR Communications error occured in the serial spindle. The optical fiber maybe be disconnected.
950 PMC SYSTEM ALARM Fault occured in the PMC. The PMC control module on the main CPU board or option 3 board may be faulty.
951 PMC-RT WATCH DOG ALARM Fault occured in the PMC-RC ( watchdog alarm). Option 3 board may be faulty.
970 NMI OCCURED IN BOC RAM parity error or NMI occured in the RMC-RB or PMC-RA2 module.
971 NMI OCCURED IN SLC An alarm condition occured in the interface with an I/O unit. For PMC-RA1, PMC-RA2 and PMC-RB check that the PMC control module on the main CPU board is connected to the I/O unit securely. For PMC-RC, check that the PMC control module on the option 3 board is connected to the I/O unit is supplied with power and that the interface module is intact.
972 NMI OCCURED IN OTHER MODULE NMI occured in a  board other than the main CPU board.
973 NON MASK INTERRUPT NMI occured for an unknown reason.
974 (b) (c)
F-BUS ERROR FANUC BUS is error.
975 (b) (c)
BUS ERROR (MAIN) MAIN CPU board is BUS error.
Alarm Code Type Description of Alarms/ Faults
??? BP/S alarm BP/S alarm occurs in the same number as the P/S alarm that occurs in ordinary program edit.
140 BP/S alarm It was attempted to select or delete in the background a program being selected in the foreground ( note)

Note: Alarm in background edit is displayed in the key input line of the background edit screen instead of the ordinary alarm screen and is resettable by any of the MDI key operation.

Absolute pulse coder (APC) alarm

Alarm Code Type Description of Alarms/ Faults
300* nth axis origin return Manual reference position return is required for the nth-axis (n=1-8)
301* APC alarm: nth axis communication nth axis (n=1-8) APC communication error. Failure in data transmission.
302* APC alarm: nth axis over time nth axis( n=1-8) APC overtime error. Failure in data transmission.
303* APC alarm: nth axis framing nth axis (n=1-8) APC framing error. Failure in Data transmission.
304* APC alarm: nth axis parity nth axis (n=1-8) APC parity error. Failure in Data transmission.
305* APC alarm:nth axis pulse error nth axis (n=1-8) APC pulse error alarm.
306* APC alarm: nth axis battery voltage 0 nth axis (n=1-8) APC battery voltage has decreased to a low level so that the data cannot be held.
307* APC alarm: nth axis battery low 1 nth axis (n=1-8) APC battery voltage reaches a level where the battery must be renewed.
308* APM alarm: nth-axis battery low 2 nth axis (n=1-8) APC battery voltage has reached a level where the battery must be renewed ( including when the power is OFF).
309*  APC ALARM: n AXIS ZRN IMPOSSIBLE  Return to the origin has been attempted without first rotating the motor one or more times.

Serial Pulse Coder ( SPC) alarms

Alarm Code Type Description of Alarms/ Faults
360  n-AXIS: ABNORMAL CHECKSUM (INT) A checksum error occured in the built in pulse coder.
361  n-AXIS: ABNORMAL PHASE DATA (INT) A phase data error occured in the built in pulse coder.
362  n-AXIS: ABNORMAL REV.DATA (INT) A rotation speed count error occured in the built in pulse coder.
363  n-AXIS: ABNORMAL CLOCK (INT) A clock error occured in the built in pulse coder.
364  n-AXIS: SOFT PHASE ALARM(INT) The digital servo software detected invalid data in the built in pulse coder.
365  n-AXIS: BROKEN LED (INT) An LED error occured in the built in pulse coder.
366  n-AXIS: PULSE MISS (INT) A pulse error occured in the built in pulse coder.
367  n-AXIS: COUNT MISS (INT) A count error occured in the built in pulse coder.
368  n-AXIS: SERIAL DATA ERROR (INT) Communication data from the built in pulse coder cannot be received.
369  n-AXIS: DATA TRANS; ERROR (INT) A CRC or stop bit error occured in the communication data being received from the built in pulse coder.
380  n-AXIS: BROKEN LED (EXT) The seperate detector is erroneous.
381  n-AXIS: ABNORMAL PHASE (EXT) A phase data error occured in the seperate linear scale.
382  n-AXIS: COUNT MISS (EXT) A pulse error occured in the seperate detector.
383  n-AXIS: PULSE MISS (EXT) A count error occured in the seperate detector.
384  n-AXIS: SOFT PHASE ALARM(EXT) The digital servo software detected invalid data in the seperate detector.
385  n-AXIS: SERIAL DATA ERROR (EXT) Communication data from the seperate detector cannot be received.
386  n-AXIS: DATA TRANS. ERROR(EXT) A CRC or stop bit error occured in the communication data being received from the seperate detector.
387*   n-AXIS: ABNORMAL ENCODER ( EXT) An error occurs in the seperate detector.

Servo Alarms

Alarm Code Type Description of Alarms/ Faults
401 SERVO ALARM: n-TH AXIS VRDY OFF The n-th axis (axis 1-8) servo amplifier READY signal (DRDY) went off.
402 SERVO ALARM: SV CARD NOT EXIST The axis control card is not provided.
403 SERVO ALARM: CARD/SOFT MISMATCH The combination of the axis control card and servo software is illegal.
404 SERVO ALARM: n-TH AXIS VRDY ON Even though the n-th axis ( axis 1-8) READY signal (MCON) went off the servo amplifier READY signal (DRDY) is still on. Or when the power was turned on, DRDY went on even though MCON was off.
405 SERVO ALARM: (ZERO POINT RETURN FAULT) Position control system fault. Due to an NC or servo system fault in the reference positon return, there is a possibility that the reference position return could not be executed properly.
407 SERVO ALARM: EXCESS ERROR The difference in synchronous axis position deviation exceeded the set value.
409 SERVO ALARM: n XIS TORQUE ALARM Abnormal servo motor load has been detected. Alternatively, abnormal spindle motor load has been detected in Cs mode.
410 SERVO ALARM: n-TH AXIS-EXCESS ERROR The position deviation value when the n-th axis ( axis 1-8) stops is larger than the set value.
411 SERVO ALARM: n-TH AXIS- EXCESS OVERFLOW The position deviation value when the n-th axis ( axis 1-8) moves is larger than the set value.
413 SERVO ALARM: n-th AXIS- LSI OVERFLOW The contents of  error register for the n-th axis ( axis 1-8) exceeded    power.
415 SERVO ALARM: n-AXIS: EXCESS SHIFT A speed higher than 524288000 units/s was attempted to be set in the n-th axis (axis 1-8).
417 SERVO ALARM: n-AXIS: PARAMETER INCORECT This alarm occurs when the n-th axis is in one of the below states: (digital servo system alarm).

  1. The value set in Parameter NO. 2020( motor form) is out of teh specified limit.
  2. A proper value (111 or -111) is not set in parameter No. 2022 (motor revolution direction).
  3. Illegal data (a value below 0, etc) was set in parameter No. 2023 (number of position feedback pulses per motor revolution).
  4. Illegal data ( a value below 0 etc) was set in parameter No. 2024 (number of position feedback pulses per motor revolution).
  5. Parameters No. 2084 and No. 2085 ( flexible field gear rate) have not been set.
  6. A value outside the limit of {1 to the number of control axes) or a non continuous value ( Parameter 1023 ( servo  axis number) contains a value out of the range from 1 to the number of axes, or an isolated value ( for example 4, not preceded by 3). was set in parameter No 1023 ( servo axis number).
420 SERVO ALARM: n-AXIS: SYNC TORQUE( M axis) During simple synchronous control, the difference between the torque commands for the master and slave axes exceeded the value set in parameter no 2078 and2079.
421 SERVO ALARM: n-AXIS: EXCESSer (D) The difference between the errors in the semi closed loop and closed loop has become excessive during the dual position feedback.
422 SERVO ALARM: n-AXIS In torque control of PMC axis control, a specified allowable speed has been executed.
423 SERVO ALARM: n-AXIS In torque control of PMC axis control, the parameter set allowable cumulative travel distance has been executed.
430 n AXIS: SV.MOTOR OVERHEAT A servo motor overheat occured.
431 n AXIS: CNV. OVERLOAD 1. PSM : Overheat occured.2. Beta series SVU: Overhead occured.
432 n AXIS: CNV.LOWVOLT CON./POWFAULT 1. PSM: Phase missing occured in the input voltage2. PMSR: The control power supply voltage has dropped.

3. Alpha Series SVU: The control power supply voltage has dropped.

433 n AXIS: CNV: LOW VOLT DC LINK
  1. PSM: The DC link voltage has dropped.
  2. PSMR: The DC link voltage has dropped.
  3. Alpha series SVU: The DC link voltage has dropped.
  4. Beta series SVU: The DC link voltage has dropped.
434 n AXIS: INV. LOW VOLT CONTROL SVM: The control power supply voltage has dropped.
435 n AXIS: INV. LOW VOLT DC LINK SVM: The DC Link Voltage has dropped.
436 n AXIS: SOFTTHERMAL (OVC) The digital servo software detected the soft thermal state (OVC).
437 n AXIS: OVERCURRENT POWER PSM: Overcurrent flowed into the input circuit.
438 n AXIS: INV: ABNORMAL CURRENT 1. SVM: The motor current is too high2. Alpha series: The motor current is too high.

3. Beta series. The motor current is too high.

439 n AXIS:CNV. OVERVOLT POWER 1. PSM: The DC voltage is too high.2. PSMR: The DC voltage is too high.

3. Alpha series SVU: The C link voltage is too high.

4. Beta serie SVU: The link voltage is too high.

440 n AXIS:CNV. EX DECELERATION POW. 1. PSMR: The regeneration discharge amount is too large.2. Alpha series SVU: The regeneration discharge amount is too large. Alternatively, the regeneration discharge ciruit is abnormal.

 

441 n AXIS: ABNORMAL CURRENT OFFSET The digital servo software detected an abnormality in the motor current detection circuit.
442 n AXIS: CNV. CHARGE FAULT/INV DB 1. PSM. The spare discharge circuit of the DC link is abnormal.2. PSMR: The spare discharge circuit of the DC link is abnormal.

3. Alpha series SVU: The dynamic brake cicruit is abnormal.

443 n AXIS: COOLING FAN FAILURE 1. PSM: The internal stirring fan failed.2. PSMR: The internal stirring fan failed.

3. Beta series SVU: The internal stirring fan failed.

444 n AXIS: COOLING FAN FAILURE SVM: The internal stirring fan failed.
445 n AXIS: SOFT DISCONNECT ALARM The digital servo software detected a broken wire in the pulse coder.
446 n AXIS: HARD DISCONNECT ALARM A broken wire in the built in pulse coder was detected by hardware.
447 n AXIS: HARD DISCONNECT (EXT) A broken wire in the seperate detector was detected by hardware.
448 n AXIS: UNMATCHED FEEDBACK ALARM The sign of feedback data from the built in pulse coder differs from that of a feedback data from the seperate detector.
449 n AXIS: INV. IPM ALARM 1. SVM: IPM ( intelligent power module) detected an alarm.2. Alpha series SVU: IPM ( intelligent power module) detected an alarm.
453* n AXIS: SPC SOFT DISCONNECT ALARM Software disconnection alarm of the a pulse coder.
460 n AXIS: FSSB DISCONNECT FSSB communication was disconnected suddenly. The possible causes are as follows:1. The FSSB communication cable was disconnected or broken.

2. The power to the amplifier was turned off suddenly.

3. A low voltage alarm was issued by the amplifier.

461 n AXIS: ILLEGAL AMP INTERFACE The axes of the 2- axis amplifier were assigned to the fast type interface.
462 n AXIS: SEND CNC DATA FAILED Because of an FSSB communication error, a slave could not receive correct data.
463 n AXIS: SEND SLAVE DATA FAILED Because of an FSSB communication error, the servo system could not receive correct data.
464 n AXIS: WRITE ID DATA FAILED An attempt was made to write maintenance informatio on the amplifier maintenance screen but it failed.
465 n AXIS: READ ID DATA FAILED At power up, amplifier initial ID information could not be read.
466 n AXIS: MOTOR/AMP COMBINATION The maximum current rating for the amplifer does not match that for the motor.
467 n AXIS: ILLEGAL SETTING OF AXIS The servo function for the following has not been enabled when an axis occupying a single DSP ( corresponding to two ordinary axes) is specified on the axis setting screen.

  1. Learning control (bit 5 of parameter NO. 2008=1)
  2. High speed current loop (bit 0 of parameter NO.2004=1)
  3. High speed interface axis (bit 4 of parameter NO. 2005=1)

Over Travel Alarms

Alarm Code Type Description of Fault/Error
500 OVER TRAVEL Exceeded the n-th axis (axis 1-8) + side stored stroke check I.
501 OVER TRAVEL Exceeded the n-th axis (axis 1-8) – side stored stroke check I.
502 OVER TRAVEL Exceeded the n-th axis (axis 1-8) +side stored stroke check II.
503 OVER TRAVEL Exceeded the n-th axis (axis 1-8) – side stored stroke check II.
504 OVER TRAVEL Exceeded the n-th axis (axis 1-8) +side stored stroke check III
505 OVER TRAVEL Exceeded the n-th axis (axis 1-8) – side stored stroke check III
506 OVER TRAVEL Exceeded the n-th axis (axis 1-8) + side hardware OT.
507 OVER TRAVEL Exceeded the n-th axis (axis 1-8) – side hardware OT.
508 INTERFERENCE A tool moving in the positive direction along the n axis has fouled another tool post.
509 INTERFERNECE A tool moving in the negative direction along the n axis has fouled another tool post.
510 OVER TRAVEL Alarm for stroke check prior to movement. The end point specified in a block falls within the forbidden area defined with the stroke check in the positive direction along the N axis.
511 OVER TRAVEL Alarm for stroke check prior to movement. The end point specified in a block falls within the forbidden area defined with the stroke check in the negative direction along the N axis.

Overheat Alarms

Alarm Code Type Description of Fault/Error
700 OVERHEAT: CONTROL UNIT Control unit overheat.
701 OVERHEAT: FAN MOTOR The fan motor on top of the cabinet for the control unit is overheated.
704 OVERHEAT: SPINDLE Spindle overheat in the spindle fluctuation detection .

Rigid Tapping Alarms

Alarm Code Type Description of Fault/Error
740 RIGID TAP ALARM: EXCESS ERROR The positional deviation of the stopped spindle has exceeded the set value during rigid tapping.
741 RIGID TAP ALARM: EXCESS ERROR The positional deviation of the moving spindle has exceeded the set value during rigid tapping.
742 RIGID TAP ALARM: LSI OVERFLOW An LSI overflow has occurred for the spindle during rigid tapping.

Serial Spindle Alarms Lỗi trục chính

Alarm Code Type Description of Fault/Error
749 S-SPINDLE LSI ERROR It is serial communication error while system is executing after power supply is on.
750 SPINDLE SERIAL LINK START FAULT This alarm is generated when the spindle control unit is not ready for starting correctly when the power is turned on in the system with the serial spindle.
752 FIRST SPINDLE MODE CHANGE FAULT This alarm is generated if the system does not properly terminate a mode change. The modes include the Cs contouring, spindle positioning, rigid tapping and spindle control modes.
754 SPINDLE-1 ABNORMAL TORQUE Abnormal first motor load has been detected
762 SECOND SPINDLE MODE CHANGE FAULT Refer to alarm No 752 for the 2nd axis
764 SPINDLE-2 ABNORMAL TORQUE Same as alarm number 754 for the second spindle
772 SPINDLE-3 MODE CHANGE ERROR Same as alarm number 752 for the third spindle
774 SPINDLE 3 ABNORMAL TORQUE ALARM Same as alarm number 754 for the third spindle
782 SPINDLE 4 MODE CHANGE ERROR Same as alarm number 752 for the fourth spindle
784 SPINDLE 4 ABNORMAL TORQUE ALARM Same as alarm number 754 for the fourth spindle

Lỗi hệ thống điều hành System Alarms * ( Model B )

Alarm Code Type Description of Fault/Error
900 ROM PARITY A parity error ocured in the CNC, macro, or servo ROM.
910 SRAM PARITY: (BYTE 0 ) A RAM parity error occured in the part program storage RAM.
911 SRAM PARITY: (BYTE 1 ) A RAM parity error occured in the part program storage RAM.
912 DRAM PARITY: (BYTE 0 ) A RAM parity error occured in the DRAM module.
913 DRAM PARITY: (BYTE 1 ) A RAM parity error occured in the DRAM module.
914 DRAM PARITY: (BYTE 2 ) A RAM parity error occured in the DRAM module.
915 DRAM PARITY: (BYTE 3 ) A RAM parity error occured in the DRAM module.
916 DRAM PARITY: (BYTE 4 ) A RAM parity error occured in the DRAM module.
917 DRAM PARITY: (BYTE 5 ) A RAM parity error occured in the DRAM module.
918 DRAM PARITY: (BYTE 6 ) A RAM parity error occured in the DRAM module.
919 DRAM PARITY: (BYTE 7 ) A RAM parity error occured in the DRAM module.
920 SERVO ALARM ( 1-4 AXIS ) Servo alarm ( 1st to 4th axis). A watchdog alarm condition occured, or a RAM parity error occured in the axis control card.
921 SERVO ALARM ( 5-8 AXIS ) Servo alarm ( 5th to 8th axis). A watchdog alarm condition occured, or a RAM parity error occured in the axis control card.
926 FSSB ALARM FSSB alarm.
930 CPU INTERRUPT CPU error (abnormal interrupt).
935 SRAM ECC ERROR An error occured in RAM for part program storage.
950 PMC SYSTEM ALARMPCxxx YYYYYYYYYYYY An error occured in the PMC.
951 PMC WATCH DOG ALARM An error occured in the PMC.
970 NMI OCCURED IN PMCLSI With the PMC-SA1, an error occured in the PMC control LSI device on the motherboard ( I/O RAM parity).
971 NMI OCCURED IN SLC With the PMC-SA1, an I/O Link disconnection was detected.
972 NMI OCCURED IN OTHER MODULE An NMI occured on a board other than the motherboard.
973 NON MASK INTERRUPT An NMI occured as a result of an unknown cause.
974 F-BUS ERROR A bus error occured on the Fanuc Bus.
975 BUS ERROR A bus error occure don the motherboard.
976 L-BUS ERROR A bus error occured on the local bus.

Bảng  mã lỗi bộ điều khiển Fanuc 0i hay Oi

Alarm Code Description of Alarm/Error
000 Re-apply the power after the parameter has been input
001 TH Alarm (A character with incorrect parity was input) Correct the tape
002 TV Alarm (The number of characters in a block is odd). This alarm is generated only when the TV check is effective
003 Data exceeding the maximum allowable number of digits was input
004 A numeral or the sign (-) was input without an address at the beginning of the block
005 The address was not followed by the appropriate data but was followed by another address of EOB code
006 Sign “-” input error (sign “-” was input after a address with which it can’t be used. Or two “-” signs were used).
007 Decimal Point “.” Input error (A decimal point was input after a address with which it can’t be used. Or input of two decimals).
008 The switch position of the tape reader was not AUTO (without reel) or REEL ON/REEL OFF (with reels).
009 Unusable character was input. (E).
010 A unusable G code was commanded. (The alarm is generated also when a G code with which the control is not equipped as an option is commanded).
011 Feed rate was not commanded at cutting feed or the feed rate was inadequate
015 The number of the commanded axes exceeded that of the allowable simultaneously controlled axis
017 The move commanded of the additional axis was commanded without equipping with an optional additional axis.
018 An additional axis was commanded with the other axis simultaneously.
021 The axis not included in the selected plane (by using G17, G18, G19) was commanded in circular interpolation.
022 In circular interpolation, radius designation was performed in the NC which is not equipped with the radius designation option.
023 In circular interpolation by radius designation, Zero was commanded for address R.
030 The tool offset number is too large for the D or H function.
031 In setting of offset amount by G10, The offset number following address P was excessive or it was not specified.
032 In setting of offset amount by G10, the offset amount was excessive.
035 Skip Cutting (G31) was commanded in cutter compensation mode.
036 G45-G48 (Tool Offset) was commanded in cutter compensation mode.
037 The selected (by using G17, G18 or G19) changed in cutter compensation mode.
038 Over cutting will occur in cutter compensation because the arc start point or end point coincides with arc center
041 Overcutting will occur in cutter compensation.
044 One of G27-G30 was commanded in canned cycle mode. In canned cycle mode, an ATC cycle (M06) is commanded.
045 An ATC cycle (M06) was commanded for the NC which is not equipped with optional reference point return feature.
046 Other than P2, P3 and P4 was specified in the 2nd, 3rd and 4th reference point return commands.
047 G27 to G30 was commanded for and axis which does not have a reference point.
058 In 4-digit S code binary 12-bit/analogue output A, A command was specified exceeding the maximum or minimum number of spindle revolutions.
059 No program for selected work number is found (external work number select A function).
060 Commanded sequence number was not found in the sequence number search,
065 Scaling Magnification was specified as other than 1-99999.
066 Scaling was applied and as a result, movement value, coordinate value, circular arc radius, etc. exceed maximum programmable dimension.
067 G51 (scaling ON) was specified in cutter compensation mode.
070 The fanuc memory area is insufficient.
071 The address to be searched was not found.
072 The number of programs to be stored exceeds 95 or 191. (191 is a option)
073 The program number has already been used.
074 The program number is other then 1-9999
075 The program number or sequence number was not found at the start block of the program
076 The address P was commanded in the block with includes a M98 command.
077 The subprogram was called in triple
078 The sequence number which was specified by address P in the block which includes a M98 or M99 was not found
079 Memorized program and tape contents do not coincide
085 When storing data in memory by using ASR or RS232C interface, an over-run or framing error was generated
086 The signal level of RS232C interface was incorrect
087 When storing data in the memory by using the fanuc RS232 interface, the time required to store the data is insufficient.
090 The reference point return cannot be performed normally because the reference point return start point is to close to the reference point or one revolution signal is not input owing to a fault in the pulse coder.
091 Reference point return cannot be executed normally, because of the feed rate is too low to synchronize the one revolution signal of the pulse coder with the reference counter,
092 The axis designated by G27 did not return to reference point.
094 No P type can be specified for program restart (because after program interruption, coordinate system setting or ORIGIN, etc. was executed)
095 No P type can be specified for program restart (because after program interruption, external work zero point offset value changed)
096 No P type can be specified for program restart (because after program interruption, work zero point offset value changed).
097 No P type can be specified for program restart (because after program interruption, no automatic operation has been executed).
100 The switch to set parameters is on. Push the reset button after turning off the switch.
101 The power was turned off while rewriting the contents of memory in the part program storage & editing operation. To clear the memory when this alarm is generated turn on the power and push the DELETE and RESET buttons.
110 Absolute value of data of fixed point representation exceeds the upper bound (99999999).
111 Exponent of data of floating point representation exceeds the upper bound.
112 Divisor is 0
113 A function that cannot be used by user macro A is used
114 Format error except for
115 Value not defined as variable number is assigned
116 Left side of substituted sentence is a variable of prohibited substitution
118 Nesting of brackets exceeds the upper limit (5).
119 Argument of SQRT is negative , Or argument of BCD is negative
122 Nesting of macro exceeds the upper limit (4)
123 Macro control command is uded in tape mode
124 DO END is not 1:1 corresponding
125 Format error of (formula)
126 Not 1 £ n £ 3 in DO n
127 NC command and macro command are mixed
128 Not 0 £n £9999 in GO TO n
129 Unallowable address is used in .
130 In external data input, greater-address data contains an error
131 In external alarm message, five or more alarms have occurred
132 In external alarm message, clear, no corresponding alarm number exists
133 In external alarm message and in external operator message, smaller- address data contains an error
170 Programs of numbers 8000 – 8999 and 9000 – 9899 are being edited, But this alarm occurs only when parameter setting inhibits these programs to be edited. Error on Stroke Limit Switch
210 The movable part of machine touched the X Axis plus stroke limit switch
211 The movable part of machine touched the X Axis minus stroke limit switch
212 While the X Axis was moving in the plus direction, It entered into the forbidden area of the stored stroke limit 1
213 While the X Axis was moving in the minus direction, It entered into the forbidden area of the stored stroke limit 1
214 While the X Axis was moving in the plus direction, It entered into the forbidden area of the stored stroke limit 2
215 While the X Axis was moving in the minus direction, It entered into the forbidden area of the stored stroke limit 2
220 The movable part of the machine touched the Y axis plus stroke limit switch
221 The movable part of the machine touched the Y axis minus stroke limit switch.
222 While the Y axis was moving in the plus direction, it entered into the forbidden area of the stored stroke limit 1
223 While the Y axis was moving in the minus direction, it entered into the forbidden area of the stored stroke limit 1
224 While the Y axis was moving in the plus direction, it entered into the forbidden area of the stored stroke limit 2
225 While the Y axis was moving in the minus direction, it entered into the forbidden area of the stored stroke limit 2
230 The movable part of the machine touched the Z axis plus stroke limit switch
231 The movable part of the machine touched the Z axis minus stroke limit switch
232 While the Z axis was moving in the plus direction, it entered into the forbidden area of the stored stroke limit 1
233 While the Z axis was moving in the minus direction, it entered into the forbidden area of the stored stroke limit 1
234 While the Z axis was moving in the plus direction, it entered into the forbidden area of the stored stroke limit 2
235 While the Z axis was moving in the minus direction, it entered into the forbidden area of the stored stroke limit 2
240 The movable part of the machine touched the 4th axis plus stroke limit switch
241 The movable part of the machine touched the 4th axis minus stroke limit switch. Error on servo system
400 The control received the X, Y or Z axis overload signal
401 The READY signal (VRDY) of the X, Y or Z axis velocity control has turned off
402 The control received the 4TH axis overload signal
403 The READY signal (VARY) of the 4TH axis velocity control has turned off
404 The READY signal (VARY) of the X, Y or Z axis velocity control does not turn off even though the READY signal (PRDY) of the position control has turned offThe READY signal (VARY) of velocity control already on even though the READY signal (PRDY) of the position control is off yet at power on condition
405 In reference point return, reference point return is not performed in correctly by abnormality of NC control section or servo system. Perform manual reference point return again
410 The content of error register of the X axis is larger than the value allowed while the machine is stopped
411 The content of error register of the Y axis is larger than the value allowed while the machine is moving
412 Drift in X axis is excessive. (Exceeds 500VELO)
413 The content of the error register of the X axis exceeded =32767. Or the velocity command value of the DA converter is out of the range of +8191~ – 8192. Incorrect settings will cause this alarm
414 The resolver/inductosyn position detecting system of X axis is trouble
415 A feed rate exceeding 511875 detection units/sec was commanded in the X axis. An incorrect setting of CMR causes this error
416 X axis pulse coder position feedback is abnormal. (Disconnection alarm)
420 The content of the error register of the Y axis is larger than the value allowed while the machine is stopped
421 The content of the error register of the Y axis is larger than the value allowed while the machine is moving
422 Drift in Y axis is excessive. (Exceeds 500VELO)
423 The content of the error register of the Y axis exceeded =32767. Or the velocity command value of the DA converter is out of the range of +8191~ – 8192. Incorrect settings will cause this alarm
424 The DSCG position detecting system of the Y axis is trouble
425 A feed rate exceeding 511875 detection units/sec was commanded in the Y axis. An incorrect setting of CMR causes this error
426 Y axis Fanuc pulse coder position feedback is abnormal. (Disconnection alarm)
430 The content of the error register of the Z axis is larger than the value allowed while the machine is stopped
431 The content of the error register of the Z axis is larger than the value allowed while the machine is moving
432 Drift in Z axis is excessive. (Exceeds 500VELO)
433 The content of the error register of the Z axis exceeded =32767. Or the velocity command value of the DA converter is out of the range of +8191~ – 8192. Incorrect settings will cause this alarm
434 The resolver/inductosyn position detecting system of Z axis is trouble
435 A feed rate exceeding 511875 detection units/sec was commanded in the Z axis. An incorrect setting of CMR causes this error
436 Z axis pulse coder position feedback is abnormal. (Disconnection alarm)
440 The content of the error register of the 4TH axis is larger than the value allowed while the machine is stopped
441 The content of the error register of the 4TH axis is larger than the value allowed while the machine is moving
442 Drift in 4TH axis is excessive. (Exceeds 500VELO)
443 The content of the error register of the 4THaxis exceeded =32767. Or the velocity command value of the DA converter is out of the range of +8191~ – 8192. Incorrect settings will cause this alarm
444 The resolver/inductosyn position detecting system of the 4TH axis is trouble
600 Data transferring error took place in the connection unit or in PC-model C
601 Slave relay was turned off. (Connections among unit, MDI/DPL (MDI/CRT) and master PCB are trouble. Also in another case change connection unit)
602 PC program has not yet been loaded
603 The correspondence between NC and PC is incorrect or interrupted. Change power sequence control PCB or master PCB
604 No hold is effective to PC-model B side MPU
605 A system error has occurred in PC-model B side MPU
606 RAM/ROM parity has occurred in PC-model B side MPU
607 Data transferring error took place in Fanuc MDI & CRT. Overheat alarm
700 Overheat of the master PCB
701 Overheat of the PCB for 4TH axis
702 Overheat of DC motor for X, Y, Z axis
703 Overheat of DC motor for 4TH axis. Errors on memory
900 Fault in bubble device. (Fault of input signal for bubble device)
901 Fault in bubble device.
902 Fault in bubble device. (Page size error, undefined command)
903 Fault in bubble device. (Transfer missing, page size over)
904 Fault in Fanuc bubble device. (Parity error)
905 Fault in bubble device. (No marker)
906 Fault in bubble device. (Many defect loops)
910 RAM parity error (low byte)
911 RAM parity error (high byte)
920 System error (watch dog timer alarm)
930 CPU error (0, 3, 4 type interrupt generation)
997 ROM parity error (PC ROM)
998 ROM parity error (Basic ROM)
999 ROM pair error (No correspondence between high and low)

 Background Edit Alarm

Alarm Code Type Description of Alarm/Error
???? BP/S alarm BP/S alarm occurs in the same number as the P/S alarm that occurs in ordinary program edit.
140 BP/S alarm It was attempted to select or delete in the program being selected in the foreground.  (Note)

Note: Alarm in background edit is displayed in the key input line of the background edit screen instead of the ordinary alarm screen and is resettable by any of the MDI key operation.

Absolute Coder Alarm

Alarm Code Type Description of Alarm/Error
300 APC alarm: nth-axis origin return Manual reference position return is required for the nth axis (n=1-8)
301 APC alarm: nth-axis communication nth axis (n=1-8) APC communication error. Failure in data transmission
302 APC alarm: nth-axis over time nth axis (n=1-8) APC overtime error. Failure in data transmission
303 APC alarm: nth-axis framing nth axis (n=1-8) APC framing error. Failure in data transmission
304 APC alarm: nth-axis parity nth axis (n=1-8) APC parity error. Failure in data transmission.
305 APC alarm: nth-axis pulse error nth axis (n=1-8) APC pulse error alarm
306 APC alarm: nth-axis battery voltage 0 nth axis (n=1-8) APC battery voltage has decreased to a low level so that the data cannot be held.
307 APC alarm: n-th axis battery low 1 nth axis (n=1-8) APC battery voltage has reached a level where the battery must be renewed.
308 APC alarm: nth axis battery low 2 nth axis (n=1-8) APC battery voltage has reached a level where the battery must be renewed. (including when the power is OFF)
309 APM ALARM: n AXIS ZRN IMPOSSIBL Return to the origin has been attempted without first rotating the motor one or more times.

Inductsyn Alarms

Alarm Code Type Description of Alarm/Error
330 INDUCTOSYN: DATA ALARM The absolute position data from Inductosyn cannot be detected.
331 INDUCTOSYN: ILLEGAL PRM Parameter No 1874, 1875, or 1876 is set to 0.

Serial Pulse Coder Alarms

Alarm Code Type Description of Alarm/Error
360  n AXIS: ABNORMAL CHECKSUM (INT)  A checksum error occurred in the built in pulse coder
361  n AXIS: ABNORMAL PHASE DATA (INT)  A phase data error occurred in the built in pulse coder
362  n AXIS: ABNORMAL REV.DATA (INT)  A rotation speed count error occurred in the built in pulse coder
363  n AXIS: ABNORMAL CLOCK (INT)  A clock error occurred in the built in pulse coder
364  n AXIS: SOFT PHASE ALARM (INT)  The digital servo software detected invalid data in the built in pulse coder
365  n AXIS: BROKEN LED (INT)  An LED error occurred in the built in pulse coder
366 n AXIS: PULSE MISS (INT)  A pulse error occured in the built in pulse coder
367  n AXIS: COUNT MISS (INT)  A count error occured in the built in pulse coder
368  n AXIS: SERIAL DATA ERROR (INT)  Communication data from the built in pulse coder cannot be received
369 n AXIS: DATA TRANS. ERROR (INT)  A CRC or stop bit error occurred in the communication data being received from the built in pulse coder.
380  n AXIS: BROKEN LED (INT)  The LED of separate detector is erroneous
381  n AXIS: ABNORMAL PHASE (EXT INT)  A phase data error occurred in the separate linear scale
382  n AXIS: COUNT  MISS (EXT)  A pulse error occurred in the separate detector
383  n AXIS: PULSE MISS (EXT)  A count  error occurred in the separate detector
384  n AXIS: SOFT PHASE ALARM (EXT)  The digital servo software detected invalid data in the separate detector
385  n AXIS: SERIAL DATA ERROR (EXT)  Communication data from the separate detector cannot be received.
386  n AXIS: DATA  TRANS. ERROR (EXT)  A CRC or stop bit error occurred in the communication data being received from the separate detector.
387  n AXIS: ABNORMAL ENCODER (EXT)  An error occurs in the separate detector.

Servo Alarms 1/2

Alarm Code Type Description of Alarm/Error
401  SERVO ALARM: n-TH AXIS VRDY OFF  The n-th axcis (1-8) servo amplifier READY signal (DRDY) went off.
402  SERVO ALARM: SV CARD NOT EXIST  The axis control card is not provided.
403  SERVO ALARM: CARD/SOFT MISMATCH  The combination of the axis control card and servo software is illegal.
404  SERVO ALARM: n-TH AXIS VRDY ON  Even though the n-th axis (axis 1-8) READY signal (MCON) went off the servo amplifier READY signal (DRDY) is still on. Or when the power as turned on, DRDY went on even though MCON was off.
405  SERVO ALARM: (ZERO POINT RETURN FAULT) Position control system fault.
407  SERVO ALARM: EXCESS ERROR The following error occurred during simple synchronous control: The difference in machine coordinates between the synchronized axes exceeds the value set in parameter No 8314.
409  SERVO ALARM: n AXIS TORQUE ALARM Abnormal servo motor load has been detected. Alternatively abnormal spindle motor load has been detected in C’s mode.
410  SERVO ALARM: n-TH AXIS EXCESS ERROR One of the following errors occurred:

  1. The positional deviation value when the n-th axis stops exceeds the value set in parameter No 1820.
  2. In simple synchronous control, the compensation amount for the synchronization exceeds the value set in parameter No 8325.
411  SERVO ALARM: n-TH AXIS EXCESS ERROR The position deviation value when the n-th axis ( axis 1-8) moves is larger than the set value.
413  SERVO ALARM: n-TH LSI OVERFLOW The contents of the error register for  the n-th axis ( axis 1-8) exceeded + or -2 power 31. This error occurs as the result of improperly  set parameters.
415  SERVO ALARM: n-TH AXIS EXCESS SHIFT A speed higher than 524288000 unit/s was attempted to be set in the n-th axis ( axis 1-8). This error occurs as the result of improperly set CMR.
417  SERVO ALARM: n-TH AXIS PARAMETER INCORRECT This alarm occurs when the n-th axis ( axis 1-8) is in one of the conditions listed below:

  1. The value set in Parameter No. 2020 is out of the specified limit.
  2. A proper value (111 0r -111) is not set in parameter No 2022.
  3. Illegal data ( a value below 0, etc) was set in parameter No 2023.
  4. Illegal data ( a value below 0, etc) was set in parameter No 2024.
  5. Parameters No 2084 and No 2085 have not been set.
  6. A value outside the limit of {1 to the number of control axes} or a non continuous value (Parameter 1023 contains a value out of the range from 1 to the number of axes, or an isolated value was set in parameter no 1023.
  7. A torque control parameter is set incorrectly in PMC axis control.
420  SERVO ALARM: n AXIS EXCESS SYNC TORQUE During simple synchronous control, the difference between the torque commands for the master and slave axes exceeded the value set in parameter NO 2031.
421  SERVO ALARM: n AXIS EXCESS ER(D) The difference between the errors in the semi closed loop and closed loop has become excessive during dual position feedback.
422  SERVO ALARM: n AXIS In torque control of PMC axis control, a specified allowable speed has been exceeded.
423  SERVO ALARM: n AXIS In torque control of PMC axis control, the parameter set allowable cumulative travel distance has been exceeded.
430  n-AXIS : SV. MOTOR OVERHEAT A servo motor overheat occured.
431 n-AXIS : CNV. OVERLOAD 1. PSM: Overheat occured.2. B series SVU: Overheat occured
432 n-AXIS : CNV. LOW VOLT CONTROL 1. PSM: Control power voltage has dropped.2.PSMR. The control power supply voltage has dropped

3. B series SVU: The control power supply voltage has dropped

433 n-AXIS : CNV. LOW VOLT DC LINK 1. PSM: The DC Link voltage has dropped.2. PSMR. The DC Link Voltage has dropped.

3. a series SVU: The DC Link Voltage has dropped.

4. b series SVU: The DC Link Voltage has dropped.

434 n-AXIS : INV. LOW VOLT CONTROL SVM: The control power supply voltage has dropped.
435 n-AXIS : INV. LOW VOLT DC LINK SVM: The DC voltage has dropped.
436 n-AXIS : SOFTTHERMAL (OVC) The digital servo software detected the soft thermal state (OVC)
437 n-AXIS : CNV. OVERCURRENT POWER PSM:  Overcurrent flowed into the input circuit.
438 n-AXIS : INV. ABNORMAL CURRENT 1. SVM: the motor current is too high2. a series SVU: The motor current is too high.

3. b series SVU: The motor current is too high.

439 n-AXIS : CNV. OVERVOLT POWER 1. PSM: The DC link voltage is too high2. PSMR: The DC link voltage is too high

3. a series SVU: The C link voltage is too high.

3. b series SVU: The link voltage is too high.

440 n-AXIS : CNV. EX DECELERATION POW. PSMR: The regenerative amount is too large.a series SVU: The regenerative discharge amount is too large/abnormal.
441 n-AXIS : ABNORMAL CURRENT OFFSET The digital servo software detected an abnormality in the motor current detection circuit.
442 n-AXIS : CNV. CHARGE FAILURE 1. PSM: The spare discharge circuit of the DC link is abnormal.2. PSMR: The spare discharge circuit of the DC link is abnormal.
443 n-AXIS : CNV. COOLING FAN FAILURE 1. PSM: The internal stirring fan failed.2. PSMR: The internal stirring fan failed.

3. b series SVU: The internal stirring fan failed.

444 n-AXIS : INV. COOLING FAN FAILURE SVM: The internal stirring fan failed.
445 n-AXIS : SOFT DISCONNECT ALARM The digital servo software detected a broken wire in the pulse coder.
446 n-AXIS : HARD DISCONNECT ALARM A broken wire in the built in pulse coder was detected by hardware.
447 n-AXIS : HARD DISCONNECT ( EXT) A broken wire in the built in the separate detector was detected by hardware.
448 n-AXIS : UNMATCHED FEEDBACK ALARM The sign of feedback data from the built in pulse coder differs from that of feedback data from the separate detector.
449 n-AXIS : INV. IPM ALARM 1. SVM: IPM detected an alarm2. a series SVU: IPM detected an alarm
453 n-AXIS : SPC SOFT DISCONNECT ALARM Software disconnection alarm of the a pulse coder.
456  ILLEGAL CURRENT LOOP The current control cycle settings are incorrect.
457 ILLEGAL HI HRV (250US) Use of high speed HRV is specified although the current control cycle is 200 us.
458 CURRENT LOOP ERROR The current control cycle setting does not match the actual current control cycle.
459 HI HRV SETTING ERROR Of two axes having adjacent servo axis numbers (parameter No 1023), odd number and even number, high speed HRV control can be performed for one axis and not for the other.
460 n AXIS: FSSB DISCONNECT  FSSB Communication was disconnected suddenly.
461 n AXIS: ILLEGAL AMP INTERFACE The axes of the 2-axis amplifier were assigned to the fast type interface.
462 n AXIS: SEND CNC DATA FAILED Because of of an FSSB communication error, a slave could not receive correct data.
463 n AXIS: SEND SLAVE DATA FAILED Because of of an FSSB communication error, the servo system could not receive correct data.
464 n AXIS: WRITE ID DATA FAILED  An attempt was made to write maintenance information on the amplifier maintenance screen, but it failed.
465 n AXIS: READ ID DATA FAILED  At power-up, amplifier initial ID information could not be read.
466 n AXIS: MOTOR/AMP COMBINATION  The maximum current rating for the amplifier does not match the motor.
467 n AXIS: ILLEGAL SETTING OF AXIS  The servo function for the following has not been enabled when an axis occupying a single DSP is specified ion the axis setting screen.
468 HI HRV SETTING ERROR (AMP) Use of high speed HRV is specified for a controlled axis of an amplifier which does not support high speed HRV.

Over Travel Alarms

Alarm Code Type Description of Alarm/Error
 A checksum error occurred in the built in pulse coder
 A phase data error occurred in the built in pulse coder
362  n AXIS: ABNORMAL REV.DATA (INT)  A rotation speed count error occurred in the built in pulse coder
363  n AXIS: ABNORMAL CLOCK (INT)  A clock error occurred in the built in pulse coder
364  n AXIS: SOFT PHASE ALARM (INT)  The digital servo software detected invalid data in the built in pulse coder
387  n AXIS: ABNORMAL ENCODER (EXT)  An error occurs in the separate detector.

Servo Alarms 2/2

Alarm Code Type Description of Alarm/Error
 600  n AXIS: INV.DC LINK OVER CURRENT  DC Link current is too large
 601  n AXIS: INV.RADIATOR FAN FAILURE  The external dissipator stirring fan failed
 602  n AXIS: INV. OVERHEAT  The servo amplifier was overheated
 603  n AXIS: INV.IPM ALARM (OH)  The IPM (intelligent power module) detected an overheat alarm.
 604  n AXIS: AMP.COMMUNICATION ERROR  Communication between the SVM and the PSM failed.
 605  n AXIS: CNV.EX.DISCHARGE POW.  PSMR: Regenerative power is too large.
 606  n AXIS: CNV.RADIATOR FAN FAILURE  PSM: The external dissipator stirring fan failed.PSMR: The external dissipator stirring fan failed.
 607  n AXIS: CNV.SINGLE PHASE FAILURE  PSM: Input voltage is in the open phase conditionPSMR: Input voltage is in the open phase condition

Overheat Alarms

Alarm Code Type Description of Alarm/Error
 700  OVERHEAT: CONTROL UNIT Control unit overheat
 701  OVERHEAT: FAN MOTOR The fan motor on the top of the cabinet for the control unit is overheated.
 704  OVERHEAT: SPINDLE Spindle overheat in the spindle fluctuation detection

Rigid Tapping Alarms

Alarm Code Type Description of Alarm/Error
 740 RIGID TAP ALARM: EXCESS ERROR The positional deviation of the stopped spindle has exceeded the set value during rigid tapping.
 741 RIGID TAP ALARM: EXCESS ERROR The positional deviation of the moving spindle has exceeded the set value during rigid tapping.
 742 RIGID TAP ALARM: LSI OVERFLOW An LSI overflow has occured for the spindle during rigid tapping.

Overheat Alarms

Alarm Code Type Description of Alarm/Error
 700  OVERHEAT: CONTROL UNIT Control unit overheat
 701  OVERHEAT: FAN MOTOR The fan motor on the top of the cabinet for the control unit is overheated.
 704  OVERHEAT: SPINDLE Spindle overheat in the spindle fluctuation detection

Rigid Tapping Alarms

Alarm Code Type Description of Alarm/Error
 740 RIGID TAP ALARM: EXCESS ERROR The positional deviation of the stopped spindle has exceeded the set value during rigid tapping.
 741 RIGID TAP ALARM: EXCESS ERROR The positional deviation of the moving spindle has exceeded the set value during rigid tapping.
 742 RIGID TAP ALARM: LSI OVERFLOW An LSI overflow has occured for the spindle during rigid tapping.

Serial Spindle Alarms

Alarm Code Type Description of Alarm/Error
749 S-SPINDLE LSI ERROR It is serial communication error while system is executing after power supply on.
750 SPINDLE SERIAL LINK START FAULT The alarm is generated when the spindle control unit is not ready for starting correctly when the power is turned on in the system with the serial spindle.
752 FIRST SPINDLE MODE CHANGE FAULT This alarm is generated if the system does not properly terminate a mode change. The modes include the Cs contouring , spindle positioning, rigid tapping, and spindle control modes. The alarm is activated if the spindle control unit does not respond  correctly to the mode change command issued by the NC.
754 SPINDLE 1 ABNORMAL TORQUE ALM Abnormal first spindle motor load has been detected.
762 SECOND SPINDLE MODE CHANGE FAULT Refer to alarm No 752 for 2nd axis.
764 SPINDLE 2 ABNORMAL TORQUE ALM Same as alarm No 754 for the second spindle.
772 SPINDLE 3 MODE CHANGE ERROR Same as alarm No 752 for the third spindle
774 SPINDLE 3 ABNORMAL TORQUE ALM Same as alarm No 754 for the third spindle
782 SPINDLE 4 MODE CHANGE ERROR Same as alarm number 752 for the fourth spindle
784 SPINDLE 4 ABNORMAL TORQUE ALM Same as alarm number 754 for the fourth spindle.

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