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6
TROUBLESHOOTING
• The forced stop deceleration does not function for alarms not subject to the forced stop deceleration
function.
For parallel drive systems, if [AL. 34 SSCNET receive error 1] or [AL. 36 SSCNET receive error 2] occurs, the servo motor
stops with the dynamic brake (DB), not with forced stop deceleration (SD).
6.1
Troubleshooting for MR-CV_ power regeneration
converter unit
When an alarm or warning is displayed, refer to "MELSERVO-J4 Servo Amplifier Instruction Manual (Troubleshooting)" to
remove the failure.
MELSERVO-J4 Servo Amplifier Instruction Manual (Troubleshooting)
When an alarm occurs, ALM (Malfunction) will turn off.
Explanation for the lists
No./Name
Indicates each No./Name of alarms or warnings.
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
Alarm reset
CPU reset
Power cycling
*1 Deactivate the alarm in servo-off status. If the alarm is deactivated in servo-on status, [AL. 1B Converter error] will occur.
*2 If the protection coordination cable is not connected, the alarm cannot be deactivated by CPU reset.
Explanation
1. Turn on RES (Reset) with an input device.
2. Input the servo-on command for the drive unit connected with the protection coordination cable.
*2
Reset the controller itself.
Turn the power off and on again.
6.1 Troubleshooting for MR-CV_ power regeneration converter unit
*1
6 TROUBLESHOOTING
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Table of Contents
Troubleshooting
