Yaskawa PC NC - Manual (Page 240)

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YASNAC PCNC Operating Manual Appendix 2: Alarm Tables
Alarm Nos.: 3381 to 3385,3391 (YENET1200 Communication Error)
1. This is an communication errclr between the NC unit and the servo unit or between the
NC unit and the inverter unit; the NC unit detects the alarm when no answer is returned
for the command output by the NC unit.
2. The servo unit or the inverter unit is faulty, or the cable will not be connected securely.
3. Contact your Yaskawa representative.
Alarm Nos.: 3401 to 3405 (Converter Alarm)
1. This alarm occurs due to the following reasons: blown fuse, regenlaration alarm, open
phase, or faulty board.
2. The servo unit detects the alarm.
3. Contact your Yaskawa representative.
Alarm Nos.: 3411 to 3415 (Servo Unit Alarm)
1. This alarm occurs due to the following reasons: destroyed parameter setting, faulty current
detector, encoder’s battery alarm, memory error or sensor error.
2. The servo unit detects the alarm.
3. The servo unit or the motor is faulty.
4. Contact your Yaskawa representative.
Alarm No.: 3421 (Inverter Unit Alarm)
1. This alarm occurs when the inverter detects an alarm other than converter alarm, broken
PG cable, excessive follow-up error, and communication error.
2. Contact your Yaskawa representative.
Alarm Nos.: 3425, 3431 to 34(35 (YENET1 200 Watchdog Error)
1. This alarm occurs when the NC unit detects the watchdog error with the inverter unit
or the servo unit.
2. The inverter unit or the servo unit is faulty.
3. Contact your Yaskawa representative.
Alarm Nos.: 3441 to 3445 (Ground Fault)
1. This alarm occurs when the servo unit detects the alarm when the power is turned ON.
2. Motor insulation is faulty.
3. Contact your Yaskawa representative.
Alarm No.: 3451 and 3452 (Follow-up Error)
1. This alarm occurs when the follow-up error exceeds the value set for the servo unit pa-rameter.
2. The servo unit detects the alarm.
3. If this alarm occurs during axis feed over a long distance, it is necessary to either lower
the command speed or increase the gain.
4. If the motor does not rotate, the servo unit is faulty.