Having issues with Alarm Display: A.820. Alarm Name: Encoder Checksum Error 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.820
Alarm Name: Encoder Checksum Error
1. Situation at Alarm Occurrence: Occurred when the control power supply was turned ON or during operation
Cause: A fault occurred in the encoder and was detected by encoder self-diagnosis.
Corrective Actions: Set up the encoder. If this alarm occurs frequently, replace the servomotor.
Cause: A SERVOPACK fault occurred.
Corrective Actions: Replace the SERVOPACK.
2. Situation at Alarm Occurrence: Occurred when Sensor ON (SENS_ON) command was sent.
Cause: A fault occurred in the encoder and was detected by encoder self-diagnosis.
Corrective Actions: Set up the encoder. If this alarm occurs frequently, replace the servomotor.
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