Instruction manual

Alarms and Warnings Troubleshooting
MELSERVO J2-Super 9 - 9
Display Error Definition Cause Action
8E Serial
communication
error
Serial
communication error
occurred between
servo amplifier and
personal computer.
1. Communication cable fault
(Open cable or short circuit).
Repair or change
the cable
2. Personal computer faulty Change the
personal computer
88 Watchdog CPU, parts faulty Fault of parts in servo amplifier
Checking method: Alarm (88) occurs if
power is switched on after CN1A,
CN1B and CN3 connectors are
disconnected.
Change the servo
amplifier
Tab. 9-2: Failure corrective action (6)