Troubleshooting For Mr-Cv_Power Regeneration Converter Unit; Explanations Of The Lists; Alarm List - Mitsubishi Electric MELSERVO-J4 Instruction Manual

2. TROUBLESHOOTING FOR MR-CV_POWER REGENERATION CONVERTER UNIT

2. TROUBLESHOOTING FOR MR-CV_POWER REGENERATION CONVERTER UNIT
When an error occurs during operation, the corresponding alarm or warning is displayed. When an alarm or
a warning is displayed, refer to section 2.4 to remove the failure. When an alarm occurs, ALM (Malfunction)
will turn off.

2.1 Explanations of the lists

(1) No./Name
Indicates each No./Name of alarms or warnings.
(2) Alarm deactivation
After the cause of the alarm has been removed, the alarm can be deactivated by any of the methods
marked in the alarm deactivation column. Warnings are automatically canceled after the cause of
occurrence is removed. Alarms are deactivated by alarm reset, CPU reset, or power cycling.
Alarm deactivation
Alarm reset
CPU reset
Cycling the power
Note 1. Deactivate an alarm in the servo-off status. Alarm deactivation in the servo-on status will trigger [AL. 1B Converter
error].
2. When it is not connected by a protection coordination cable, alarms cannot be deactivated by CPU reset.

2.2 Alarm list

No.
61
62
66
67
68
69
6A
6B
6C
6E_
(Note 1)
70
71
72
73
75
76
77
7E
7F
Note 1. The third digit is displayed in some cases. The remedy for this alarm is same as that of [AL. 6E].
2. After resolving the source of trouble, cool the equipment for approximately 30 minutes.
For drive units connected by protection coordination cable, input the servo-on command
(Note 1)
Resetting the controller itself (Note 2)
Turning the power off and then turning it on again.
Name
Overcurrent
Frequency error
Process error
Open phase
Watchdog
Ground fault
MC drive circuit error
Inrush current suppression circuit error
Main circuit error
Board error
Converter forced stop error
Undervoltage
Cooling fan error
Regenerative error
Overvoltage
Switch setting error
Main circuit device overheat
Overload 1
Overload 2
Explanation
Alarm reset
(Note 2)
(Note 2)
(Note 2)
2 - 1
Alarm deactivation
CPU reset Cycling the power
(Note 2) (Note 2)
(Note 2) (Note 2)
(Note 2) (Note 2)
(Note 2) (Note 2)