Troubleshooting For Mr-Cr55K(4) Resistance Regeneration Converter Unit; Explanation For The Lists; Alarm/Warning List - Mitsubishi Electric MELSERVO-J4 Instruction Manual

3. TROUBLESHOOTING FOR MR-CR55K(4) RESISTANCE REGENERATION CONVERTER UNIT

3. TROUBLESHOOTING FOR MR-CR55K(4) RESISTANCE REGENERATION
CONVERTER UNIT
When an error occurs during operation, the corresponding alarm or warning is displayed. If any alarm has
occurred, refer to section 3.3 and take the appropriate action. When an alarm occurs, ALM will turn off.
If any warning has occurred, refer to section 3.4 and take the appropriate action.

3.1 Explanation for the lists

(1) No./Name
Indicates each No./Name of alarms or warnings.
(2) Alarm deactivation
After its cause has been removed, the alarm can be deactivated in any of the methods marked
alarm deactivation column. Warnings are automatically canceled after the cause of occurrence is
removed. Alarms are deactivated with alarm reset or cycling the power.
Alarm deactivation
Alarm reset
Cycling the power

3.2 Alarm/warning list

Display
A.10 Undervoltage
A.12 Memory error 1 (RAM)
A.15 Memory error 2 (EEP-ROM)
A.17 Board error
A.19 Memory error 3 (Flash-ROM)
A.30 Regenerative error
A.33 Overvoltage
A.37 Parameter error
A.38 MC drive circuit error
A.39 Open phase
Inrush current suppression circuit
A.3A
error
A.45 Main circuit device overheat
A.47 Cooling fan error
A.50 Overload 1
A.51 Overload 2
888 Watchdog
Note. After resolving the source of trouble, cool the equipment for approximately 30 minutes.
POINT
[AL. 37 Parameter error] and warnings are not recorded in the alarm history.
Push the "SET" button on the current alarm screen of the display.
Turning the power off and then turning it on again.
Name
Explanation
Alarm deactivation
Cycling the
Alarm reset
power
(Note) (Note)
(Note) (Note)
(Note) (Note)
(Note) (Note)
3 - 1
Display Name
A.91 Converter overheat warning
A.E0 Excessive regeneration warning
A.E1 Overload warning 1
A.E6 Converter forced stop warning
A.E8 Cooling fan speed reduction warning
in the