Remedies For Alarms - Mitsubishi Electric MELSERVO-J4 Instruction Manual

1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)

1.4 Remedies for alarms

CAUTION
Remove the cause of the alarm in accordance with this section. Use MR Configurator2 to refer to the cause
of alarm occurrence.
When any alarm has occurred, eliminate its cause, ensure safety, and deactivate
the alarm before restarting operation. Otherwise, it may cause injury.
If [AL. 25 Absolute position erased] occurs, always make home position setting
again. Otherwise, it may cause an unexpected operation.
As soon as an alarm occurs, make the Servo-off status and interrupt the main
circuit power.
POINT
When any of the following alarms has occurred, do not cycle the power
repeatedly to restart. Doing so will cause a malfunction of the servo amplifier
and servo motor. Remove its cause and allow about 30 minutes for cooling
before resuming the operation.
[AL. 30 Regenerative error]
[AL. 46 Servo motor overheat]
[AL. 51 Overload 2]
[AL. 37 Parameter error] is not recorded in the alarm history.
[AL. 45 Main circuit device overheat]
[AL. 50 Overload 1]
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