Remedies For Alarms - Mitsubishi Electric MELSERVO-J3 Series Instruction Manual

11. TROUBLESHOOTING

11.4.2 Remedies for alarms

CAUTION
When an alarm occurs, the trouble (ALM) switches off and the dynamic brake is operated to stop the servo
motor. At this time, the display indicates the alarm No.
Remove the cause of the alarm in accordance with this section. Use MR Configurator to refer to a factor of
alarm occurrence. Use the alarm history of MR Configurator to refer to the alarm detailed information.
When an alarm occurs, reset the alarm after removing the cause and ensuring
safety. Then, restart the operation. Otherwise, injury may occur.
If an absolute position erase (A25) occurs, be sure to set the home position again.
Not doing so may cause unexpected operation.
As soon as an alarm occurs, turn off Servo-on (RYn0) and shut off the power.
POINT
When any of the following alarms has occurred, do not deactivate the alarm
and resume operation repeatedly. To do so will cause the servo amplifier/servo
motor to fail. Remove the cause of occurrence, and leave a cooling time of 30
minutes or longer before resuming operation.
Regenerative error (A30)
Servo motor overheat (A46)
Overload 2 (A51)
For the alarm deactivation method, refer to section 11.4.1.
Parameter error (A37) is not recorded in the alarm history.
Main circuit device overheat (A45)
Overload 1 (A50)
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