Mitsubishi Electric MR-J5-G Series User Manual page 10

Precautions
• As soon as an alarm occurs, switch to servo-off status and shut off the main circuit power supply.
• If an abnormality related to overheating occurs, remove the cause of the abnormality and allow a cooling time of
approximately 30 minutes.
• The alarm canceling method in [AL. 042 Servo control error] can be changed with [Pr. PL04.3 [AL. 042 Servo control error]
detection controller reset condition selection].
• If an alarm which is related to the communication with the controller occurs, resetting the communication may not cancel
the alarm.
• In the alarm list, alarms marked with "" in the "Safety reset" column must be canceled while all the safety sub-functions
have stopped. These alarms cannot be canceled unless all the safety sub-functions have stopped.
• After performing the check/action, cycle the power of the servo amplifier.
• If the alarm remains active even after the check/action of each alarm, the servo amplifier may have malfunctioned. Replace
the servo amplifier, then check the repeatability.
• If the same problem continues even after replacing the servo amplifier, there may be a problem with the surrounding
environment or with other devices.
• When [AL. 025 Absolute position erased] occurs, perform homing again to prevent an unexpected operation.
• To prevent malfunctions of the servo amplifier and servo motor, do not deactivate the alarm repeatedly to resume if any of
the following alarms occur. Remove the cause of occurrence and allow 30 minutes or more for cooling, then resume the
operation.
[AL. 030 Regenerative error]
[AL. 045 Main circuit device overheat]
[AL. 046 Servo motor overheat]
[AL. 050 Overload 1]
[AL. 051 Overload 2]
• To prevent malfunctions of the servo amplifier and servo motor, do not cycle the power of the servo amplifier repeatedly to
resume if any of the following warnings occur. If the power of the servo amplifier is switched off/on during the warnings,
allow more than 30 minutes for cooling before resuming operation.
[AL. 091 Servo amplifier overheat warning]
[AL. 0E0 Excessive regeneration warning]
[AL. 0E1 Overload warning 1]
• When [AL. 0E6 Servo forced stop warning], [AL. 0E9 Main circuit off warning], [AL. 0EA ABS servo-on warning], or [AL.
0EB The other axis error warning] occurs, the servo amplifier is changed to servo-off status. If any other warning occurs,
the operation can still be continued, but an alarm may occur.
1 SERVO AMPLIFIER TROUBLESHOOTING
8
1.1 Outline