When Alarm Or Warning Has Occurred; Alarms And Warning List - Mitsubishi Electric MELSERVO-J2 Series Instruction Manual

11. TROUBLESHOOTING

11.2 When alarm or warning has occurred

11.2.1 Alarms and warning list

When a fault occurs during operation, the corresponding alarm or warning is displayed. If any alarm or
warning has occurred, refer to Section 11.2.2 or 11.2.3 and take the appropriate action.
After its cause has been removed, the alarm can be deactivated in any of the methods marked
alarm deactivation column.
Display
A.10
A.11
A.12
A.13
A.15
A.16
A.17
A.18
A.20
A.24
A.25
A.30
A.31
A.32
A.33
A.35
A.37
A.46
A.50
A.51
A.52
A.61
A.8A
A.8E
8888
A.90
A.92
A.96
A.98
A.9F
A.E0
A.E1
A.E3
A.E6
A.E9
Note: After removing the cause of occurrence, allow about 30 minutes for cooling before resuming
operation.
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POINT
If an alarm has occurred, detect the trouble (ALM) and turn off the servo-on
(SON).
Name
Undervoltage
Board error 1
Memory error 1
Clock error
Memory error 2
Encoder error 1
Board error 2
Board error 3
Encoder error 2
Main circuit error
Absolute position erase
Regenerative error
Overspeed
Overcurrent
Overvoltage
Command pulse frequency error
Parameter error
Servo motor overheat
Overload 1
Overload 2
Error excessive
Operation alarm
Serial communication time-out
Serial communication error
Watchdog
Home position return incomplete
Open battery cable warning
Home position setting warning
Software limit warning
Battery warning
Excessive regenerative load warning
Overload warning
Absolute position counter warning
Servo emergency stop
Main circuit off warning
search engine
Alarm Deactivation
Power OFF Press "SET" on
ON present alarm screen
(Note)
(Note)
(Note)
(Note)
Removing the cause of occurrence
deactivates the alarm automatically.
11 - 2
in the
Reset (RES)
(Note)
(Note)
(Note)
(Note)