2. TROUBLESHOOTING FOR MR-CV_POWER REGENERATION CONVERTER UNIT
2 - 1
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
Explanation
Alarm reset
For drive units connected by protection coordination cable, input the servo-on command
(Note 1)
CPU reset
Resetting the controller itself (Note 2)
Cycling the power
Turning the power off and then turning it on again.
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. Name
Alarm deactivation
Alarm reset
CPU reset
Cycling the power
Alarm
61 Overcurrent
62 Frequency
error
66 Process
error
67 Open
phase
68
Watchdog
69
Ground
fault
6A
MC drive circuit error
6B
Inrush current suppression circuit error
6C
Main circuit error
6E_
(Note 1)
Board error
70
Converter forced stop error
71 Undervoltage
72
Cooling fan error
73 Regenerative
error
(Note 2)
(Note 2)
(Note 2)
75
Overvoltage
76
Switch setting error
77
Main circuit device overheat
(Note 2)
(Note 2)
7E
Overload
1
(Note 2)
(Note 2)
(Note 2)
7F
Overload
2
(Note 2)
(Note 2)
(Note 2)
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.
Содержание MELSERVO MR-J4-B-RJ Series
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