Yaskawa PC NC - Manual (Page 236)

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YASNAC PCNC Operating Manual Appendix 2: Alarm Tables
Faulty PG cable breakage detection Check if the alarm occurs when you first Contact your Yaskawa representative.
circuit. POWER ON even if the cables are
connected properly.
Fualty PG If alarm occurs during low speed operation Get a new PG. Contact your Yaskawa
the PG could be faulty. representative.
Alarm No. : 3121 to 3125 ( excessive Speed )
The alarm is detected if the motor speed exceeds 1.2 times the maximum motor speed. Contact your Yaskawa representative.
Alarm No. : 3161 to 3165 ( Absolute Error )
Malfunction of the absolute encoder is detected. Contact your Yaskawa reprsentative after checking the
following :
1. Whether the alarm occurs immediately after the control power is turned ON.
2 Whether the alarm is cleared when the power is turned OFF and then turned ON again.
3. Whether the battery alarm occurs at the same time.
Alarm No. : 3181 to 3185 ( Position Error )
Malfunction of the PG pulse counter in the absolute encoder is detected. Contact your Yaskawa representative after checking
the following :
1. Whether the alarm occurs immediately after the control power is turned ON.
2. Whether the alarm occurs frequently during operation.
Alarm No. : 3201 to 3205 ( Servo drive Communications Error )
Communication error between the NC and the AC servodrive unit is detected. Contact your yaskawa representative.
Alarm No. : 3301 to 3305 ( Over Current )
Contact your Yaskawa representative after checking the following :
1. Whether the alarm occurs immediately after the control power in turned ON.
2. Whether the alarm occurs after turning ON the main power.