Mitsubishi Electric Melservo-J3 Series MR-J3-B, Instruction Manual

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17. SPEED CONTROL OPERATION
17.9.4 When an alarm or warning has occurred
POINT
As soon as an alarm occurs, turn the servo off, and shut off the main
circuit power.
Parameter error (A37) events and warning events are not recorded in the alarm
history.
When an error occurs during operation, the corresponding alarm or warning is displayed as shown in the
following table. If any alarm or warning has occurred, refer to section 11.4.2 and 11.4.3 to take the appropriate
action. When an alarm occurs, malfunction (ALM) turns off.
After the cause of an alarm is removed, the alarm can be deactivated in any of the methods marked with in
the alarm deactivation column. Warnings are automatically canceled after the cause of occurrence is removed.
To troubleshoot any problem without an alarm or warning, refer to section 17.9.6 to remove its cause.
Di
sp
la
y
Alarm deactivation Display Name
(Note 3)
MR
Configurator
parameter
unit
(Note 2)
Alarm
reset
Warni
ng
A90
Home position return
incomplete warning
Name
Power
supply
A92
Battery cable disconnection
warning
OFF
→
ON A96 Home position setting warning
A98 Software limit warning
Ala
rm
A10 Undervoltage A99 Stroke limit warning
A12 Memory error 1 (RAM) A9D CC-Link warning 1
A13 Clock error A9E CC-Link warning 2
A15 Memory error 2 (EEP-ROM) A9F Battery warning
A16 Encoder error 1 (at power-on) AE0
Excessive regeneration
warning
A17 Board error AE1 Overload warning 1
A19 Memory error 3 (Flash-ROM) AE3
Absolute position counter
warning
A1A Motor combination error AE6 Servo forced stop warning
A20 Encoder error 2 (during runtime) AE8
Cooling fan speed reduction
warning
A21 Encoder error 3 (during runtime) AE9 Main circuit off warning
A24 Main circuit error AEC Overload warning 2
A25 Absolute position erased AED Output watt excess warning
A30 Regenerative error (Note 1) (Note 1) (Note 1)
A31 Overspeed
A32 Overcurrent
A33 Overvoltage
A35 Command pulse frequency error
A37 Parameter error
A45 Main circuit device overheat (Note 1) (Note 1) (Note 1)
A46 Servo motor overheat (Note 1) (Note 1) (Note 1)
A47 Cooling fan error
A50 Overload 1 (Note 1) (Note 1) (Note 1)
A51 Overload 2 (Note 1) (Note 1) (Note 1)
A52 Error excessive
A61 Operation alarm
A8A
Serial communication time-out
error
A8D CC-Link communication error
A8E Serial communication error
888 Watchdog
Note 1. Wait for about 30 minutes as cooling time after removing the cause of occurrence, then deactivate the alarm.
2. Turns on RY(n+1)A or RY(n+3)A.
3. Clicking the "Alarm reset" button on the "Alarm display" screen of MR Configurator allows an alarm to be deactivated.
Pressing the "STOP RESET" key of the parameter unit allows an alarm to be deactivated.