Yaskawa YASNAC PC NC Maintenance Manual - Manual (Page 33)

PC NC Maintenance Manual Chapter 4: Troubleshooting
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(2) Alarm Numbers 3041 to 3045, 3051 (Excessive Follow-up Error)
This alarm occurs if the follow-up error exceeds 120% of the
error in rapid traverse (100%) operation.
The servo unit detects the alarm.
Improper gain adjustment is one of the reasons.
Contact a Yaskawa customer service representative.
(3) Alarm Numbers 3061 to 3065 (Overload)
This alarm occurs if the load exceeds the rated torque consider-
ably.
The servo unit detects the error.
Review the cutting conditions. Contact a Yaskawa customer ser-
vice representative after checking whether the alarm occurred
simply after turning the control power ON.
(4) Alarm Nos.: 3081 to 3085 and 3091 (Broken PG Cable)
The encoder signal cable or the encoder itself will be faulty.
The servo unit or the inverter detects the error.
Contact a Yaskawa customer service representative.
(5) Alarm Numbers 3101 to 31051 (Servo Alarm)
This alarm occurs when the NC unit detects the alarm signal out-
put from the servo unit.
Check the contents of the alarm by displaying the servo alarm dis-
play screen (press [F2] of the alarm job in the common process.).