Chapter 8 Troubleshooting - Mitsubishi Electric MELSERVO-J4 Series Instruction Manual

8
TROUBLESHOOTING
• Refer to the following for details of alarms and warnings. MELSERVO-J4 Servo Amplifier Instruction
Manual (Troubleshooting)
• As soon as an alarm occurs, make the Servo-off status and interrupt the main circuit power.
• [AL. 37 Parameter error] and warnings (except [AL. F0 Tough drive warning]) are not recorded in the alarm
history.
• In the initial setting, [AL. 8D.1 CC-Link IE communication error 1] and [AL. 8D.2 CC-Link IE communication
error 2] are not recorded in the alarm history. The alarms are recorded by setting [Pr. PN06] to "_ _ _ 1".
When an error occurs during operation, the corresponding alarm and warning are displayed. When an alarm or warning is
displayed, refer to the following to remove the failure.
MELSERVO-J4 Servo Amplifier Instruction Manual (Troubleshooting)
When an alarm occurs, ALM (Malfunction) will turn off.
8.1
Explanation for the lists
No./Name/Detail No./Detail name
Indicates each No./Name/Detail No./Detail name of alarms or warnings.
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.
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, CPU reset, or cycling the power.
Alarm deactivation
Alarm reset
CPU reset
Cycling the power
8 TROUBLESHOOTING
280
8.1 Explanation for the lists
Explanation
• Error reset command from the controller
• Click "Occurring Alarm Reset" in the "Alarm Display" window of MR Configurator2
Resetting the controller itself
Turning off the power and on again