Having issues with Alarm Display: A.850. Alarm Name: Encoder Over speed on Sony SI-F209 Electronic Part Mounter? Read our step-by-step SMT maintenance solution below. If you require replacement feeders, nozzles, or sensors, contact SMTBOX for OEM-compatible parts.
Alarm Display: A.850
Alarm Name: Encoder Over speed
1. Situation at Alarm Occurrence: Occurred when the control power supply was turned ON.
Cause: When the encoder power supply turns ON and the SEN signal is ON when using an absolute encoder the servo motor runs at 200 min or more.
Corrective Actions: Turn ON the encoder power supply when the servomotor runs at a speed less than 200 min.
Cause: An encoder fault occurred.
Corrective Actions: Replace the servo motor.
Cause: A SERVOPACK board fault occurred.
Corrective Actions: Replace the SERVOPACK.
2. Situation at Alarm Occurrence: Occurred during operation
Cause: An encoder Fault occurred.
Corrective Actions: Replace the servo motor.
Cause: A SERVOPACK board fault occurred.
Corrective Actions: Replace the SERVOPACK.
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