Mitsubishi Electric MELSERVO-JN Series Instruction Manual page 218

8. TROUBLESHOOTING
8. TROUBLESHOOTING
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
alarm deactivation column.
The warning is automatically canceled after removing the cause of occurrence.
3-digit,
7-segment
No.
LED
display
A.10
Undervoltage
A.12
Memory error 1 (RAM)
A.13
Clock error
A.15
Memory error 2 (EEP-ROM)
A.16
Encoder initial communication error1
A.17
Board error
A.19
Memory error 3 (Flash-ROM)
A.1A
Motor combination error
A.1C
Software combination error
A.1E
Encoder initial communication error 2
A.1F
Encoder initial communication error 3
A.20
Encoder normal communication error 1
A.21
Encoder normal communication error 2
A.24
Main circuit error
A.30
Regenerative error
A.31
Overspeed
A.32
Overcurrent
A.33
Overvoltage
A.35
Command frequency error
A.37
Parameter error
A.39
Program error
A.45
Main circuit device overheat
A.46
Servo motor overheat
A.50
Overload 1
A.51
Overload 2
A.52
Error excessive
A.61
Operation alarm
A.8E
USB communication error
888
Watchdog
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.
Name
Stop
method
(Note 3)
EDB
DB
DB
DB
DB
DB
DB
DB
DB
DB
DB
EDB
EDB
DB
DB
EDB
DB
EDB
EDB
DB
DB
EDB
DB
EDB
DB
EDB
DB
EDB
DB
8 - 1
Alarm deactivation
Press "SET"
Power
on current
OFF ON
alarm screen.
(Note 1) (Note 1)
(Note 1) (Note 1)
(Note 1) (Note 1)
(Note 1) (Note 1)
(Note 1) (Note 1)
in the
Alarm
reset
(RES)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 1)