Mitsubishi Electric MELSERVO-JN Series - 8. TROUBLESHOOTING; 8.1 Alarms and warning list

8 - 1
8. TROUBLESHOOTING
8. TROUBLESHOOTING
POINT
As soon as an alarm occurs, turn off servo-on (SON) and the main circuit power
supply.
Parameter error (37. ) alarm and warnings will not be recorded in the alarm
history.
If an alarm/warning has occurred, refer to this chapter and remove its cause.
8.1 Alarms and warning list
When an error occurs during the operation, the corresponding alarm or warning is displayed. If any alarm or
warning has occurred, refer to section 8.2 or 8.3 and take the appropriate action. When an alarm occurs, ALM
turns off.
After removing the cause of the alarm, the alarm can be deactivated in any of the methods marked
in the
alarm deactivation column.
The warning is automatically canceled after removing the cause of occurrence.
No.
3-digit,
7-segment
LED
display
Name
Stop
method
(Note 3)
Alarm deactivation
Power
OFF
ON
Press "SET"
on current
alarm screen.
Alarm
reset
(RES)
Alarms
A.10
Undervoltage
EDB
A.12
Memory error 1 (RAM)
DB
A.13
Clock error
DB
A.15
Memory error 2 (EEP-ROM)
DB
A.16
Encoder initial communication error1
DB
A.17
Board error
DB
A.19
Memory error 3 (Flash-ROM)
DB
A.1A
Motor combination error
DB
A.1C
Software combination error
DB
A.1E
Encoder initial communication error 2
DB
A.1F
Encoder initial communication error 3
DB
A.20
Encoder normal communication error 1
EDB
A.21
Encoder normal communication error 2
EDB
A.24
Main circuit error
DB
A.30
Regenerative error
DB
(Note 1)
(Note 1) (Note 1)
A.31
Overspeed
EDB
A.32
Overcurrent
DB
A.33
Overvoltage
EDB
A.35
Command frequency error
EDB
A.37
Parameter error
DB
A.39
Program error
DB
A.45
Main circuit device overheat
EDB
(Note 1)
(Note 1) (Note 1)
A.46
Servo motor overheat
DB
(Note 1)
(Note 1) (Note 1)
A.50
Overload 1
EDB
(Note 1)
(Note 1) (Note 1)
A.51
Overload 2
DB
(Note 1)
(Note 1) (Note 1)
A.52
Error excessive
EDB
A.61
Operation alarm
DB
A.8E
USB communication error
EDB
888
Watchdog
DB