Troubleshooting; Explanation For The Lists - Mitsubishi Electric MELSERVO-J4 Series Instruction Manual

8. TROUBLESHOOTING

8. TROUBLESHOOTING
When an error occurs during operation, the corresponding alarm and warning are displayed. When an alarm
or warning is displayed, refer to "MELSERVO-J4 Servo Amplifier Instruction Manual (Troubleshooting)" to
remove the failure. When an alarm occurs, ALM will turn off.

8.1 Explanation for the lists

(1) No./Name/Detail No./Detail name
Indicates each No./Name/Detail No./Detail name of alarms or warnings.
(2) Stop method
For the alarms and warnings in which "SD" is written in the stop method column, the servo motor stops
with the dynamic brake after forced stop deceleration. For the alarms and warnings in which "DB" or
"EDB" is written in the stop method column, the servo motor stops with the dynamic brake without forced
stop deceleration.
(3) Alarm deactivation
After its cause has been removed, the alarm can be deactivated in any of the methods marked ○ in the
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
(4) Alarm code
To output alarm codes, set [Pr. PD34] to "_ _ _ 1". Alarm codes are outputted by on/off of bit 0 to bit 2.
Warnings ([AL. 91] to [AL. F3]) do not have alarm codes. The alarm codes in the following table will be
outputted when they occur. The alarm codes will not be outputted in normal condition.
When using an MR-D01 extension IO unit, you can output alarm codes by setting [Pr. Po12] to "_ _ _ 1".
Alarm codes are outputted by on/off of bit 0 to bit 3.
POINT
Refer to "MELSERVO-J4 Servo Amplifier Instruction Manual (Troubleshooting)"
for details of alarms and warnings.
As soon as an alarm occurs, turn SON (Servo-on) off and interrupt the power.
[AL. 37 Parameter error] and warnings (except [AL. F0 Tough drive warning])
are not recorded in the alarm history.
1. Turning on RES (Reset) with input device
2. Pushing the "SET" button while the display of the servo amplifier is the current
alarm display status
3. Pushing "Occurring Alarm Reset" in the "Alarm Display" window of MR
Configurator2
Turning off the power and on again
8 - 1
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Explanation