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Alarm Display: A.740. Alarm Name: Overload of Surge Current Limit Resistor on Sony SI-F209 Electronic Part Mounter

Alarm Display: A.740

Alarm Name: Overload of Surge Current Limit Resistor

1. Situation at Alarm Occurrence: Occurred when the control power supply was turned ON.

Cause: A SERVOPACK board fault occurred.
Corrective Actions: A SERVOPACK fault occurred.

2. Situation at Alarm Occurrence: Occurred during operations other than the turning ON/OFF of the main circuit.

Cause: A SERVOPACK board fault occurred.
Corrective Actions: A SERVOPACK fault occurred.

3. Situation at Alarm Occurrence: Occurred at the main circuit power supply ON/OFF operation.

Cause: The inrush current limit resistor operation frequency at the maincircuit power supply ON/OF operation exceeds the allowable range.
Corrective Actions: Reduce the number of times that main circuit’s power supply can be turned ON/OFF to 5 times/min. or less.

Cause: A SERVOPACK fault occurred.
Corrective Actions: Replace the SERVOPACK.

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