Fanuc alarm: 421 - SERVO ALARM: n AXIS EXCESS ER (D)

CNC Machine Control Manufacturer
Fanuc
Control Model
16/18/21, 16i/18i/21i, 160i/180i/210i, ,
421 - SERVO ALARM: n AXIS EXCESS ER (D)

Alarm Description

The difference between the errors in the semi-closed loop and closed loop has become excessive during dual position feedback. Check the values of the dual position conversion coefficients in parameters No. 2078 and 2079.

Additional Suggestions & Alarm Clarification

None currently

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