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Mitsubishi Electric MR-JET- G Series User Manual
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Mitsubishi Electric MR-JET- G Series User Manual

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Mitsubishi Electric AC Servo System
MR-JET
User's Manual
(Troubleshooting)
-MR-JET-_G
-MR-JET-_G-N1

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Summary of Contents for Mitsubishi Electric MR-JET- G Series

  • Page 1 Mitsubishi Electric AC Servo System MR-JET User's Manual (Troubleshooting) -MR-JET-_G -MR-JET-_G-N1...

  • Page 3: About The Manual

    ABOUT THE MANUAL e-Manuals are Mitsubishi Electric FA electronic book manuals that can be browsed with a dedicated tool. e-Manuals enable the following: • Searching for desired information in multiple manuals at the same time (manual cross searching) • Jumping from a link in a manual to another manual for reference •...

  • Page 4: U.s. Customary Units

    U.S. CUSTOMARY UNITS U.S. customary units are not shown in this manual. Convert the values if necessary according to the following table. Quantity SI (metric) unit U.S. customary unit Mass 1 [kg] 2.2046 [lb] Length 1 [mm] 0.03937 [inch] Torque 1 [N•m] 141.6 [oz•inch] Moment of inertia...

  • Page 5: Table Of Contents

    CONTENTS ABOUT THE MANUAL ..............1 U.S.
  • Page 6 [AL. 090_Homing incomplete warning] ............63 [AL.
  • Page 7 REVISIONS................104 WARRANTY .

  • Page 8: Chapter 1 Servo Amplifier Troubleshooting

    SERVO AMPLIFIER TROUBLESHOOTING Outline If an error occurs in the servo system, the corresponding alarm or warning is displayed. When an alarm occurs, ALM (Malfunction) turns off. If an alarm or warning is displayed, take appropriate measures according to the following: Page 14 Handling methods for alarms/warnings Restrictions •...
  • Page 9 Precautions • As soon as an alarm occurs, switch to servo-off status and shut off the power supply. • If an abnormality related to overheating occurs, remove the cause of the abnormality and allow a cooling time of approximately 30 minutes. •...

  • Page 10: List Of Alarm No./Warning No

    List of alarm No./warning No. Explanation of the list Motor stop method Alarms and warnings which have "SD" in the "Motor stop method" column stop the servo motor with the dynamic brake after forced stop deceleration. Alarms and warnings which have "DB" or "EDB" in the "Motor stop method" column stop the servo motor with the dynamic brake.
  • Page 11 Detail No. Alarm/Warning Motor stop Alarm deactivation Motor stop method warning Alarm reset Communication Power cycling reset     010.1 Alarm     010.2 Alarm     011.1 Alarm     012.1 Alarm 012.2 Alarm...
  • Page 12 Detail No. Alarm/Warning Motor stop Alarm deactivation Motor stop method warning Alarm reset Communication Power cycling reset     020.1 Alarm     020.2 Alarm 020.3 Alarm         020.5 Alarm 020.6 Alarm...
  • Page 13 Detail No. Alarm/Warning Motor stop Alarm deactivation Motor stop method warning Alarm reset Communication Power cycling reset     045.1 Alarm 045.2 Alarm         046.1 Alarm 046.2 Alarm    ...
  • Page 14 Detail No. Alarm/Warning Motor stop Alarm deactivation Motor stop method warning Alarm reset Communication Power cycling reset     08E.1 Alarm     08E.2 Alarm 08E.3 Alarm         08E.4 Alarm 08E.5 Alarm...
  • Page 15 Detail No. Alarm/Warning Motor stop Alarm deactivation Motor stop method warning Alarm reset Communication Power cycling reset     0E6.1 Warning 0E8.1 Warning           0E8.2 Warning 0E9.1 Warning  ...

  • Page 16: Handling Methods For Alarms/Warnings

    Handling methods for alarms/warnings Remove the cause of the alarm and warning in accordance with this section. MR Configurator2 can be referenced to find the causes of warnings. [AL. 010_Undervoltage] • The power supply voltage has dropped. [AL. 010.1_Voltage drop in the control circuit power] Cause Check/action method Model...

  • Page 17: [Al. 011_Switch Setting Error]

    [AL. 011_Switch setting error] • The settings of the DIP switch are incorrect. • The settings of the rotary switch are incorrect. [AL. 011.1_Rotary switch setting error] Cause Check/action method Model Each selected network has its settable range, Check the settings of the rotary switches (SW1/SW2). [JET-G] If the value set with the rotary switch does not match the actual value, the and the values set with the rotary switches...

  • Page 18: [Al. 012_Memory Error 1 (Ram)]

    [AL. 012_Memory error 1 (RAM)] • The internal part of the servo amplifier (RAM) has malfunctioned. [AL. 012.1_RAM error 1] Cause Check/action method Model An internal part of the servo amplifier has Noise from the power supply may have caused the failure. Disconnect all [JET-G] cables except for those for the power supply, then check the repeatability.

  • Page 19: [Al. 013_Cpu Error]

    [AL. 013_CPU error] • An internal part of the servo amplifier has malfunctioned. • A clock transmitted from the controller has an error. [AL. 013.1_CPU error 1] Cause Check/action method Model An internal part of the servo amplifier has Noise from the power supply may have caused the failure. Disconnect all [JET-G] cables except for those for the power supply, then check the repeatability.

  • Page 20: [Al. 014_Control Process Error]

    [AL. 014_Control process error] • The process did not complete within the specified time. • The internal part of the servo amplifier (communication IC) has malfunctioned. [AL. 014.1_Control process error 1] Cause Check/action method Model The servo parameter settings are incorrect. Return the servo parameter to the value it had before the alarm occurrence, [JET-G] then check if the problem occurs again.

  • Page 21: [Al. 016_Encoder Initial Communication Error 1]

    [AL. 016_Encoder initial communication error 1] • There is a communication error between the encoder and servo amplifier. [AL. 016.1_Encoder initial communication - Receive data error 1] Cause Check/action method Model There is a problem with the encoder cable. Check if the encoder cable has been disconnected, incorrectly wired, or has [JET-G] shorted.
  • Page 22 [AL. 016.6_Encoder initial communication - Transmission data error 2] Page 19 [AL. 016.1_Encoder initial communication - Receive data error 1] [AL. 016.7_Encoder initial communication - Transmission data error 3] Page 19 [AL. 016.1_Encoder initial communication - Receive data error 1] [AL.

  • Page 23: [Al. 017_Board Error]

    [AL. 017_Board error] • There is a problem with an internal part of the servo amplifier. [AL. 017.1_Board error 1] Cause Check/action method Model There is a problem with the current detection Check that this alarm occurs in the servo-on status. If the alarm occurs, the [JET-G] servo amplifier may have malfunctioned.

  • Page 24: [Al. 019_Memory Error 3]

    [AL. 019_Memory error 3] • The internal part of the servo amplifier (Flash-ROM) has malfunctioned. [AL. 019.1_Flash-ROM error 1] Cause Check/action method Model The Flash-ROM has malfunctioned. Noise from the power supply may have caused the failure. Disconnect all [JET-G] cables except for those for the power supply, then check the repeatability.

  • Page 25: [Al. 01A_Servo Motor Combination Error]

    [AL. 01A_Servo motor combination error] • The combination of the servo amplifier and servo motor is incorrect. • The combination of the servo amplifier and servo motor constant file is incorrect. [AL. 01A.1_Servo motor combination error 1] Cause Check/action method Model The servo amplifier and the servo motor have Refer to "Servo amplifier/motor combinations"...

  • Page 26: [Al. 01E_Encoder Initial Communication Error 2]

    [AL. 01E_Encoder initial communication error 2] • The encoder has malfunctioned. [AL. 01E.1_Encoder malfunction] Cause Check/action method Model The encoder has malfunctioned. Replace the servo motor. [JET-G] There is a problem with the surrounding Check the noise, ambient temperature, and other conditions, and implement appropriate countermeasures for the cause.

  • Page 27: [Al. 01F_Encoder Initial Communication Error 3]

    [AL. 01F_Encoder initial communication error 3] • The connected encoder is not compatible with the servo amplifier. [AL. 01F.1_Incompatible encoder] Cause Check/action method Model An incompatible servo motor was connected to Refer to "Servo amplifier/motor combinations" in the following manual. [JET-G] MR-JET User's Manual (Hardware) the servo amplifier.

  • Page 28: [Al. 020_Encoder Normal Communication Error 1]

    [AL. 020_Encoder normal communication error 1] • There is a communication error between the encoder and servo amplifier. [AL. 020.1_Encoder normal communication - Receive data error 1] Cause Check/action method Model There is a problem with the encoder cable. Check if the encoder cable has been disconnected or has shorted. [JET-G] If there is a problem with the cable, repair or replace the cable.
  • Page 29 [AL. 020.5_Encoder normal communication - Transmission data error 1] Cause Check/action method Model If an A/B/Z-phase differential output type Check if the A/B-phase pulse signals (PA, PAR, PB, and PBR) of the encoder [JET-G] cable have been disconnected or have shorted. encoder is being used, the wiring of the Refer to the specifications provided by the encoder manufacturer or "A/B/Z- encoder is incorrect.

  • Page 30: [Al. 021_Encoder Normal Communication Error 2]

    [AL. 021_Encoder normal communication error 2] • The encoder detected an error signal. [AL. 021.1_Encoder data error 1] Cause Check/action method Model An excessive speed or acceleration was Decrease the control gain, then check the repeatability. If the error does not [JET-G] repeat, use the encoder with a lower gain.

  • Page 31: [Al. 024_Main Circuit Error]

    [AL. 024_Main circuit error] • The servo motor power cable has a ground fault. • The servo motor has a ground fault. [AL. 024.1_Ground fault detected at hardware detection circuit] Cause Check/action method Model The servo motor power cable has a ground Check if the servo motor power cable has a ground fault.

  • Page 32: [Al. 025_Absolute Position Erased]

    [AL. 025_Absolute position erased] • The absolute position data has an error. • Power was switched on for the first time in the absolute position detection system. [AL. 025.1_Servo motor encoder - Absolute position erased] Cause Check/action method Model Power was switched on for the first time in the If the power was switched on for the first time after the absolute position [JET-G] detection system is set, check that the battery is mounted correctly before...

  • Page 33: [Al. 027_Initial Magnetic Pole Detection Error]

    [AL. 027_Initial magnetic pole detection error] • The initial magnetic pole detection cannot be performed properly. [AL. 027.1_Initial magnetic pole detection - Abnormal termination] Cause Check/action method Model A moving part collided against the machine. If the moving part collides, move the start position of the magnetic pole [JET-G] detection.
  • Page 34 [AL. 027.3_Initial magnetic pole detection - Limit switch error] Cause Check/action method Model In the magnetic pole detection, both limit Check the limit switch status. [JET-G] If both of the limit switches are turned off, turn on the limit switches. switches are turned off.

  • Page 35: [Al. 028_Linear Encoder Error 2]

    [AL. 028_Linear encoder error 2] • There is a problem with the operating environment of the linear encoder. [AL. 028.1_Linear encoder environmental error] Cause Check/action method Model The ambient temperature of the linear encoder Check the ambient temperature and the specifications of the linear encoder. [JET-G] is outside of specifications.

  • Page 36: [Al. 02A_Linear Encoder Error 1]

    [AL. 02A_Linear encoder error 1] • An error of the linear encoder was detected. The content of the errors varies depending on each encoder manufacturer. [AL. 02A.1_Linear encoder error 1-1] Cause Check/action method Model There is a problem with the way that the linear Adjust the positions of the linear encoder and the head.

  • Page 37: [Al. 030_Regenerative Error]

    [AL. 030_Regenerative error] • The permissible regenerative power of the built-in regenerative resistor or regenerative option was exceeded. • The regenerative transistor in the servo amplifier has malfunctioned. [AL. 030.1_Regenerative heat error] Cause Check/action method Model The settings of the regenerative resistor Check the regenerative resistor (regenerative option) in use and the setting [JET-G] value of [Pr.

  • Page 38: [Al. 031_Overspeed]

    [AL. 031_Overspeed] • The servo motor speed exceeded the maximum speed. [AL. 031.1_Servo motor speed error] Cause Check/action method Model The settings of the electronic gear are Check the setting value of the electronic gear. [JET-G] Refer to "Electronic gear function" in the following manual. incorrect.

  • Page 39: [Al. 032_Overcurrent]

    [AL. 032_Overcurrent] • A current higher than the permissible current flowed in the servo amplifier. [AL. 032.1_Overcurrent detected at hardware detection circuit (during operation)] Cause Check/action method Model The servo amplifier has malfunctioned. Check if the servo motor power cable has a ground fault. If the servo motor [JET-G] power cable has a ground fault, correct the wiring.
  • Page 40 [AL. 032.3_Overcurrent detected at hardware detection circuit (during a stop)] Page 37 [AL. 032.1_Overcurrent detected at hardware detection circuit (during operation)] [AL. 032.4_Overcurrent detected at software detection function (during a stop)] Page 37 [AL. 032.2_Overcurrent detected by software detection process (during operation)] 1 SERVO AMPLIFIER TROUBLESHOOTING 1.3 Handling methods for alarms/warnings...

  • Page 41: [Al. 033_Overvoltage]

    [AL. 033_Overvoltage] • The value of the bus voltage exceeded the specified value. 200 V class: 400 V DC [AL. 033.1_Main circuit voltage error] Cause Check/action method Model The settings of the regenerative resistor Check the regenerative resistor (regenerative option) in use and the setting [JET-G] value of [Pr.

  • Page 42: [Al. 035_Command Frequency Error]

    [AL. 035_Command frequency error] • The input command pulse frequency is too high. [AL. 035.1_Command frequency error] Cause Check/action method Model The command from the controller is excessive. Check if the command from the controller exceeds the maximum speed. If the [JET-G] command exceeds the maximum speed, review the operation pattern.

  • Page 43: [Al. 037_Parameter Error]

    [AL. 037_Parameter error] • Servo parameter setting values are incorrect. [AL. 037.1_Parameter setting range error] Cause Check/action method Model A servo parameter was set outside of the [JET-G]: Check the servo parameter error No. and review the setting value of [JET-G] the servo parameter on the alarm display screen of MR Configurator2 or with setting range.

  • Page 44: [Al. 03A_Inrush Current Suppression Circuit Error]

    [AL. 03A_Inrush current suppression circuit error] • The inrush current suppression circuit error was detected. [AL. 03A.1_Inrush current suppression circuit error] Cause Check/action method Model The inrush current suppressor circuit has Replace the servo amplifier. [JET-G] malfunctioned. 1 SERVO AMPLIFIER TROUBLESHOOTING 1.3 Handling methods for alarms/warnings...

  • Page 45: [Al. 042_Servo Control Error]

    [AL. 042_Servo control error] • A servo control error occurred. (When a linear servo motor is used) [AL. 042.1_Servo control error by position deviation] Cause Check/action method Model [Pr. PA17 Servo motor series setting] and [Pr. Check if [Pr. PA17] and [Pr. PA18] are set correctly. [JET-G] PA18 Servo motor type setting] were not set based on the servo motor to be used.
  • Page 46 [AL. 042.3_Servo control error by torque/thrust deviation] Cause Check/action method Model [Pr. PA17 Servo motor series setting] and [Pr. Check if [Pr. PA17] and [Pr. PA18] are set correctly. [JET-G] PA18 Servo motor type setting] were not set based on the servo motor to be used. The settings of the encoder resolution differ Check the settings of [Pr.

  • Page 47: [Al. 045_Main Circuit Device Overheat]

    [AL. 045_Main circuit device overheat] • The inside of the servo amplifier overheated. [AL. 045.1_Main circuit device overheat error 1] Cause Check/action method Model The ambient temperature exceeded the Check the ambient temperature, and if the temperature exceeds the specified [JET-G] value, lower the ambient temperature.

  • Page 48: [Al. 046_Servo Motor Overheat]

    [AL. 046_Servo motor overheat] • The servo motor overheated. [AL. 046.1_Abnormal temperature of servo motor 1] Cause Check/action method Model The ambient temperature of the servo motor Check the ambient temperature of the servo motor, and if the temperature [JET-G] exceeds the specified value, lower the ambient temperature.
  • Page 49 [AL. 046.7_Abnormal temperature of servo motor 5] Cause Check/action method Model The values of the servo parameters for Restore the values of the servo parameters for manufacturer setting to the [JET-G] initial values. manufacturer setting were changed. 1 SERVO AMPLIFIER TROUBLESHOOTING 1.3 Handling methods for alarms/warnings...

  • Page 50: [Al. 047_Cooling Fan Error]

    [AL. 047_Cooling fan error] • The speed of the servo amplifier cooling fan decreased. • The fan speed decreased to 30 % or less of the rated speed of the alarm occurrence level. [AL. 047.1_Cooling fan stop error] Cause Check/action method Model A foreign object was caught in the cooling fan.

  • Page 51: [Al. 050_Overload 1]

    [AL. 050_Overload 1] • The load exceeded the overload protection characteristics of the servo amplifier. [AL. 050.1_Thermal overload error 1 during operation] Cause Check/action method Model The servo motor power cable was Check the servo motor power cable, then repair or replace the cable. [JET-G] disconnected.
  • Page 52 [AL. 050.5_Thermal overload error 2 during a stop] Page 49 [AL. 050.4_Thermal overload error 1 during a stop] [AL. 050.6_Thermal overload error 4 during a stop] Page 49 [AL. 050.4_Thermal overload error 1 during a stop] 1 SERVO AMPLIFIER TROUBLESHOOTING 1.3 Handling methods for alarms/warnings...

  • Page 53: [Al. 051_Overload 2]

    [AL. 051_Overload 2] • Maximum output current continuously flowed due to machine collision or other causes. [AL. 051.1_Thermal overload error 3 during operation] Cause Check/action method Model The servo motor power cable was Repair or replace the servo motor power cable. [JET-G] disconnected.

  • Page 54: [Al. 052_Excessive Error]

    [AL. 052_Excessive error] • Droop pulses exceeded the alarm occurrence level. [AL. 052.1_Excessive droop pulse 1] Cause Check/action method Model The servo motor power cable was Repair or replace the servo motor power cable. [JET-G] disconnected. The connection of the servo motor is incorrect. Check the U/V/W wiring for forgotten screws, loose screws, and incorrect wiring.
  • Page 55 [AL. 052.6_Excessive droop pulse at servo-off] Cause Check/action method Model The servo motor shaft was rotated by an Make sure that the servo motor is not rotated by an external force. [JET-G] external force. When the servo motor was rotating, servo-on Turn servo-on when the servo motor stops.

  • Page 56: [Al. 054_Oscillation Detection]

    [AL. 054_Oscillation detection] • The oscillation of the servo motor was detected. [AL. 054.1_Oscillation detection error] Cause Check/action method Model The servo system is unstable and oscillating. Check the torque ripple with MR Configurator2. [JET-G] If the torque ripple is vibrating, adjust the servo gain with the auto tuning. Set the machine resonance suppression filter.

  • Page 57: [Al. 056_Forced Stop Error]

    [AL. 056_Forced stop error] • The servo motor failed to decelerate normally during a forced stop deceleration. [AL. 056.2_Over speed during forced stop] Cause Check/action method Model The forced stop deceleration time constant is Set a larger value in "Deceleration time constant at forced stop", then check [JET-G] the repeatability.

  • Page 58: [Al. 069_Command Error]

    [AL. 069_Command error] • When the software limit was activated, the command position exceeded 32 bits (-2147483648 to 2147483647). • When the software limit was activated, the command position exceeded 30 bits (-536870912 to 536870911) from the value that was set. •...
  • Page 59 [AL. 069.4_Reverse rotation stroke end detection - Command excess error] Cause Check/action method Model The command position exceeded 30 bits from Review the operation pattern so that the command does not exceed 30 bits. [JET-G] the position which was detected after detecting LSN (Reverse rotation stroke end).

  • Page 60: [Al. 070_Load-Side Encoder Initial Communication Error]

    [AL. 070_Load-side encoder initial communication error] • There is a communication error between the load-side encoder and servo amplifier. [AL. 070.3_Load-side encoder initial communication - Receive data error 3] Cause Check/action method Model The values of the servo parameters for Restore the values of the servo parameters for manufacturer setting to the [JET-G] initial values.

  • Page 61: [Al. 076_Load-Side Encoder Error]

    [AL. 076_Load-side encoder error] • There is an error in a parameter. [AL. 076.2_Load-side encoder error 2] Cause Check/action method Model The values of the servo parameters for Restore the values of the servo parameters for manufacturer setting to the [JET-G] initial values.

  • Page 62: [Al. 086_Network Communication Error]

    [AL. 086_Network communication error] • An error occurred in the network communication. [AL. 086.1_Network communication error 1] Cause Check/action method Model A network cable has been disconnected. Check if the network cable is connected correctly. [JET-G] Turn off the power supply of the servo amplifier, then connect the network cable correctly.

  • Page 63: [Al. 088_Watchdog 1]/[Al. 888_Watchdog 1]/[Al. 88888_Watchdog 1]

    [AL. 088_Watchdog 1]/[AL. 888_Watchdog 1]/[AL. 88888_Watchdog 1] • The CPU or other component parts have malfunctioned. [AL. 088.1_Watchdog 1-1]/[AL. 088_Watchdog 1-1]/[AL. 888_Watchdog 1-1]/[AL. 88888_Watchdog 1-1] Cause Check/action method Model An internal part of the servo amplifier has Replace the servo amplifier. [JET-G] malfunctioned.

  • Page 64: [Al. 08E_Serial Communication Error]

    [AL. 08E_Serial communication error] • A communication error occurred between the servo amplifier and the personal computer or the controller. • An error occurred in Mitsubishi Electric serial communication (USB communication). [AL. 08E.1_Serial communication receive error] Cause Check/action method Model The settings of the personal computer or other Check the settings of the personal computer and other equipment.

  • Page 65: [Al. 090_Homing Incomplete Warning]

    [AL. 090_Homing incomplete warning] • Homing did not complete properly with the positioning function. [AL. 090.1_Homing incomplete] Cause Check/action method Model An automatic operation was executed while Check if homing was not executed. [JET-G] If homing was not executed, execute homing. homing was incomplete.

  • Page 66: [Al. 091_Servo Amplifier Overheat Warning]

    [AL. 091_Servo amplifier overheat warning] • The temperature inside of the servo amplifier has reached a warning level. [AL. 091.1_Main circuit device overheat warning] Cause Check/action method Model The ambient temperature of the servo Lower the ambient temperature. [JET-G] amplifier exceeded the specified value (55 °C). The servo amplifier does not meet the Check the specifications of close mounting.

  • Page 67: [Al. 092_Battery Cable Disconnection Warning]

    [AL. 092_Battery cable disconnection warning] • The battery voltage for the absolute position detection system has decreased. [AL. 092.1_Encoder battery cable disconnection warning] Cause Check/action method Model The battery may not be connected to the servo Check if the battery is connected correctly. [JET-G] amplifier.

  • Page 68: [Al. 096_Home Position Setting Warning]

    [AL. 096_Home position setting warning] • Homing failed. [AL. 096.1_In-position warning at homing] Cause Check/action method Model During homing, INP (In-position) did not turn Adjust gains so that the droop pulses are set within the In-position range. [JET-G] Remove the cause of droop pulse occurrence, then perform homing. on within the specified time.

  • Page 69: [Al. 098_Software Position Limit Warning]

    [AL. 098_Software position limit warning] • The software position limit set by servo parameters has been reached. [AL. 098.1_Forward rotation-side software stroke limit reached] Cause Check/action method Model The software position limit was set within the Check if [Pr. PT15] and [Pr. PT17] are set correctly. [JET-G] actual operation range.

  • Page 70: [Al. 099_Stroke Limit Warning]

    [AL. 099_Stroke limit warning] • The stroke limit signal is off. [AL. 099.1_Forward rotation stroke end off] Cause Check/action method Model The forward rotation stroke limit switch may Check if the limit switch is connected correctly. [JET-G] The status of the input signal can be confirmed on the I/O monitor screen of not be connected to LSP.
  • Page 71 [AL. 099.8_Upper stroke limit off 2] Page 68 [AL. 099.4_Upper stroke limit off] [AL. 099.9_Lower stroke limit off 2] Page 68 [AL. 099.5_Lower stroke limit off] 1 SERVO AMPLIFIER TROUBLESHOOTING 1.3 Handling methods for alarms/warnings...

  • Page 72: [Al. 09B_Excessive Error Warning]

    [AL. 09B_Excessive error warning] • Droop pulses exceeded the warning occurrence level. [AL. 09B.1_Excessive droop pulse 1 warning] Cause Check/action method Model The servo motor power cable was Repair or replace the servo motor power cable. [JET-G] disconnected. The connection of the servo motor is incorrect. Check the U/V/W wiring.

  • Page 73: [Al. 09E_Network Warning]

    [AL. 09E_Network warning] • An error exists in the network data reception. • An error exists in the network settings. [AL. 09E.2_Communication cycle setting warning] Cause Check/action method Model An unsupported communication cycle was set. Review the settings on the master side. [JET-G] [AL.
  • Page 74 [AL. 09E.A_Communication cycle setting warning] Cause Check/action method Model Servo parameter settings primarily for the Check the servo parameters and change the communication cycle to one that [JET-G] is compatible with the set control mode and functions. control mode and functions that are not For the function restrictions of the network communication cycle, refer to supported by the network communication "Function restrictions"...

  • Page 75: [Al. 09F_Battery Warning]

    [AL. 09F_Battery warning] • The battery voltage for the absolute position detection system has decreased. [AL. 09F.1_Low battery] Cause Check/action method Model The battery may not be connected to the servo Check if the battery is connected correctly. [JET-G] amplifier. The battery voltage is too low.

  • Page 76: [Al. 0E0_Excessive Regeneration Warning]

    [AL. 0E0_Excessive regeneration warning] • [AL. 030.1 Regenerative heat error] may occur. [AL. 0E0.1_Excessive regeneration warning] Cause Check/action method Model The regenerative load ratio exceeded 85 %. Page 35 [AL. 030.1_Regenerative heat error] [JET-G] 1 SERVO AMPLIFIER TROUBLESHOOTING 1.3 Handling methods for alarms/warnings...

  • Page 77: [Al. 0E1_Overload Warning 1]

    [AL. 0E1_Overload warning 1] • [AL. 050 Overload 1] or [AL. 051 Overload 2] may occur. [AL. 0E1.1_Thermal overload warning 1 during operation] Cause Check/action method Model The load was over 85 % of the alarm trigger Page 49 [AL. 050.1_Thermal overload error 1 during operation] [JET-G] level of [AL.
  • Page 78 [AL. 0E1.8_Thermal overload warning 4 during a stop] Cause Check/action method Model The load was over 85 % of the alarm trigger Page 50 [AL. 050.6_Thermal overload error 4 during a stop] [JET-G] level of [AL. 050.6 Thermal overload error 4 during a stop].

  • Page 79: [Al. 0E2_Servo Motor Overheat Warning]

    [AL. 0E2_Servo motor overheat warning] • [AL. 046.2 Servo motor overheat] may occur. [AL. 0E2.1_Servo motor temperature warning] Cause Check/action method Model The temperature of the servo motor reached Page 46 [AL. 046.2_Abnormal temperature of servo motor 2] [JET-G] 85 % of the occurrence level of [AL. 046.2 Servo motor overheat].

  • Page 80: [Al. 0E3_Absolute Position Counter Warning]

    [AL. 0E3_Absolute position counter warning] • The multi-revolution counter of the absolute position encoder exceeded the maximum range. • There is an error in the absolute position encoder pulses. [AL. 0E3.1_Multi-revolution counter travel distance excess warning] Cause Check/action method Model In the absolute position system, the travel Review the operation range.

  • Page 81: [Al. 0E6_Servo Forced Stop Warning]

    [AL. 0E6_Servo forced stop warning] • EM2 (Forced stop 2) or EM1 (Forced stop 1) was turned off. [AL. 0E6.1_Forced stop warning] Cause Check/action method Model EM2/EM1 was turned off. After ensuring safety, turn EM2/EM1 on. [JET-G] An external 24 V DC power supply has not Input the external 24 V DC power supply.

  • Page 82: [Al. 0E8_Cooling Fan Speed Reduction Warning]

    [AL. 0E8_Cooling fan speed reduction warning] • The cooling fan speed decreased to a warning level or lower. [AL. 0E8.1_Decreased cooling fan speed warning] Cause Check/action method Model A foreign object was caught in the cooling fan. Remove the foreign object. [JET-G] The cooling fan has reached the end of its Check the total of the power-on time of the servo amplifier.

  • Page 83: [Al. 0E9_Main Circuit Off Warning]

    [AL. 0E9_Main circuit off warning] • The servo-on command was input with the power supply off. • The bus voltage dropped when the servo motor was rotating at 50 r/min or lower. [AL. 0E9.1_Servo-on signal on during main circuit off] Cause Check/action method Model...

  • Page 84: [Al. 0Ec_Overload Warning 2]

    [AL. 0EC_Overload warning 2] • Operation was repeated with a high load ratio while the servo motor shaft was not rotating. [AL. 0EC.1_Overload warning 2] Cause Check/action method Model The load is excessive or the capacity is Reduce the load. Alternatively, replace the servo motor with a larger-capacity [JET-G] servo motor.

  • Page 85: [Al. 0Ed_Output Watt Excess Warning]

    [AL. 0ED_Output watt excess warning] • The output wattage (speed × torque) of the servo motor exceeded the rated output, and that status continued steadily. [AL. 0ED.1_Output watt excess warning] Cause Check/action method Model The output wattage of the servo motor (speed Reduce the servo motor speed.

  • Page 86: [Al. 0F0_Tough Drive Warning]

    [AL. 0F0_Tough drive warning] • The tough drive function was activated. [AL. 0F0.1_Instantaneous power failure tough drive warning] Cause Check/action method Model The power supply voltage has dropped. Page 14 [AL. 010.1_Voltage drop in the control circuit power] [JET-G] [AL. 0F0.3_Vibration tough drive warning] Cause Check/action method Model...

  • Page 87: [Al. 0F2_Drive Recorder Warning]

    [AL. 0F2_Drive recorder warning] • Writing/reading/clearing of the drive recorder data failed. [AL. 0F2.1_Drive recorder warning 1] Cause Check/action method Model There is an error in the drive recorder data. Check if clearing the alarm history of the drive recorder with MR Configurator2 [JET-G] disables the warning.

  • Page 88: [Al. 0F3_Oscillation Detection Warning]

    [AL. 0F3_Oscillation detection warning] • The oscillation of the servo motor was detected. [AL. 0F3.1_Oscillation detection warning] Page 54 [AL. 054.1_Oscillation detection error] 1 SERVO AMPLIFIER TROUBLESHOOTING 1.3 Handling methods for alarms/warnings...

  • Page 89: [Al. 0F4_Positioning Warning]

    [AL. 0F4_Positioning warning] • The target position or the acceleration/deceleration time constant was set outside of the setting range. [AL. 0F4.6_Acceleration time constant setting range error warning] Cause Check/action method Model The acceleration time constant was set Set [Pr. PT49 Speed acceleration time constant] correctly, then cancel the [JET-G] warning by turning on C_ORST (Operation alarm reset).

  • Page 90: [Al. 118_Encoder Diagnosis]

    [AL. 118_Encoder diagnosis] • The servo amplifier is in the test operation mode. [AL. 118.1_Encoder communication circuit diagnosis in progress] Cause Check/action method Model The servo amplifier is in the encoder Cancel the encoder communication circuit diagnosis mode. [JET-G] Refer to "Encoder communication diagnosis function" in the following manual. communication circuit diagnosis mode.

  • Page 91: [Al. 119_Memory Error 4]

    [AL. 119_Memory error 4] • There is a memory error. [AL. 119.1_Memory error 4-1] Cause Check/action method Model There is a problem with the surrounding Check the power supply for noise. If there is noise, take countermeasures to [JET-G] reduce the noise. environment.

  • Page 92: [Al. 11A_Servo Motor Constant Error]

    [AL. 11A_Servo motor constant error] • The servo motor constant file is damaged. [AL. 11A.1_Servo motor constant file error] Cause Check/action method Model Writing of the servo motor constant file failed. There is a possibility that the servo motor constant file is damaged primarily [JET-G] due to noise entering the file while the file was written.

  • Page 93: [Al. 130_Regenerative Error 2]

    [AL. 130_Regenerative error 2] • The regenerative power exceeds the permissible regenerative power of the built-in regenerative resistor or regenerative option. • The regenerative transistor in the servo amplifier has malfunctioned. [AL. 130.1_Regenerative heat error] Cause Check/action method Model The settings of the regenerative resistor Refer to "Regenerative option"...

  • Page 94: [Al. 139_Open-Phase Error]

    [AL. 139_Open-phase error] • An open phase occurred in the power supply of the servo amplifier. • An open phase occurred in the servo motor power line. [AL. 139.2_Output open-phase error] Cause Check/action method Model An open phase occurred in the servo motor Check that the servo motor power line is connected with the servo amplifier.

  • Page 95: [Al. 188_Watchdog 2]

    [AL. 188_Watchdog 2] • The CPU or other component parts have malfunctioned. [AL. 188.1_Watchdog 2-1] Cause Check/action method Model An internal part of the servo amplifier has Replace the servo amplifier. [JET-G] malfunctioned. 1 SERVO AMPLIFIER TROUBLESHOOTING 1.3 Handling methods for alarms/warnings...

  • Page 96: [Al. 19E_Network Warning 2]

    [AL. 19E_Network warning 2] • An error exists in the network settings. [AL. 19E.1_Parameter automatic backup setting warning] Cause Check/action method Model An error was detected in the parameter Check if the master station supports power interruption protection. [JET-G] If power interruption protection is not supported, set [Pr. PN20] to "0" to disable automatic backup setting.

  • Page 97: [Al. 1F8_Memory Warning 1]

    [AL. 1F8_Memory warning 1] • There is a memory error. [AL. 1F8.1_Memory writing frequency warning] Cause Check/action method Model The frequency of writing to the memory Prepare for replacing the servo amplifier by making a backup of necessary [JET-G] data or by other means. exceeded the guaranteed number.

  • Page 98: Trouble Which Does Not Trigger An Alarm/Warning

    Trouble which does not trigger an alarm/warning This section shows examples of trouble which will not trigger an alarm or warning as well as the possible causes of such trouble. Refer to this section and remove each cause of trouble. Precautions •...

  • Page 99: The Display Is Off

    The display is off • The display is off. Possible cause Check/action method Model The external I/O terminal has shorted. If disconnecting the following connectors solves the trouble, the cable wiring [JET-G] may have shorted. Review the wiring. [JET-G]: CN2, CN3 The power has not been supplied.

  • Page 100: The Increase In The Servo Motor Speed Is Insufficient Or Excessive

    The increase in the servo motor speed is insufficient or excessive • The increase in the servo motor speed is insufficient or excessive. Possible cause Check/action method Model The settings of the speed command, speed Review the settings of the speed command, speed limit, and electronic gear. [JET-G] limit, or electronic gear are incorrect.

  • Page 101: The Servo Motor Vibrates

    The servo motor vibrates • The servo motor vibrates. Possible cause Check/action method Model The servo gain is too high or the response of Decrease the servo gain to check if the trouble is solved or decrease the value [JET-G] of [Pr.

  • Page 102: The Machine Vibrates Unsteadily When It Stops

    The machine vibrates unsteadily when it stops • The machine vibrates unsteadily when it stops. Possible cause Check/action method Model The servo gain is too low or the response of Increase the servo gain or the value of [Pr. PA09 Auto tuning response]. [JET-G] the auto tuning is too low.

  • Page 103: The Home Position Deviates At The Homing

    The home position deviates at the homing • The home position deviates at the homing. Possible cause Check/action method Model When performing the dog type homing, the Check if a fixed amount (in one revolution) deviates. Adjust the position of the [JET-G] proximity dog.

  • Page 104: A Position Mismatch Occurs At Power Restoration In An Absolute Position Detection System

    A position mismatch occurs at power restoration in an absolute position detection system • A position mismatch occurs at power restoration in an absolute position detection system. Possible cause Check/action method Model While the servo amplifier was in power-off Extend the acceleration time. [JET-G] Keep the speed under the maximum permissible speed at power failure.

  • Page 105: Coasting Distance Of The Servo Motor Became Longer

    Coasting distance of the servo motor became longer • The coasting distance of the servo motor became longer. Possible cause Check/action method Model The load increased and exceeded the Reduce the load. [JET-G] permissible load to motor inertia. The electromagnetic brake malfunctioned as Remove the servo motor and all the wiring from the machine, and check if the servo motor shaft can be rotated by the hands.
  • Page 106 Linear servo motor control mode, profile mode This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent licenses. Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property rights which may occur as a result of using the contents noted in this manual.
  • Page 107 WARRANTY Warranty 1. Warranty period and coverage We will repair any failure or defect hereinafter referred to as "failure" in our FA equipment hereinafter referred to as the "Product" arisen during warranty period at no charge due to causes for which we are responsible through the distributor from which you purchased the Product or our service provider.
  • Page 108 TRADEMARKS MELSERVO is a trademark or registered trademark of Mitsubishi Electric Corporation in Japan and/or other countries. All other product names and company names are trademarks or registered trademarks of their respective companies. IB(NA)-0300483ENG-B...
  • Page 110 IB(NA)-0300483ENG-B(2007)MEE MODEL: MODEL CODE: HEAD OFFICE : TOKYO BUILDING, 2-7-3 MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN NAGOYA WORKS : 1-14 , YADA-MINAMI 5-CHOME , HIGASHI-KU, NAGOYA , JAPAN When exported from Japan, this manual does not require application to the Ministry of Economy, Trade and Industry for service transaction permission. Specifications are subject to change without notice.

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