[Cause]
This alarm is issued when there is an abnormality in the speed count value in the pulse encoder. The rotation speed may be incorrectly counted due to an abnormality of the pulse encoder. The number in parentheses indicates the tracking encoder number.
[Countermeasure]
1. Strengthen the grounding of the pulse encoder flange.
2. Replace the motor.
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After eliminating the cause of the alarm, perform pulse reset and then turn on the power. For the steps of pulse reset, please refer to 3.1.4 Pulse Encoder Alarm Recovery.
Note: When an alarm indicating a communication abnormality is accompanied (SRVO-090 DTERR alarm, SRVO-091 CRCERR alarm, SRVO-092 STBERR alarm), the alarm may not actually be issued.