SERVOMOTOR CONTROL DEVICE AND PRODUCTION SYSTEM EQUIPPED WITH THE CONTROL DEVICE

摘要

A servomotor control device includes a servomotor control circuit for controlling an inverter such that an alternating current is supplied to a servomotor when receiving a safety signal, and for controlling the inverter such that the alternating current is not supplied to the servomotor when not receiving the safety signal, and a servomotor monitoring circuit for stopping the servomotor by stopping transmission of the safety signal to the servomotor control circuit when determining to stop the servomotor, and for stopping the servomotor by disconnecting supply of a direct current to the inverter with a power source disconnect circuit and stopping the transmission of the safety signal to the servomotor control circuit when determining that at least one of the power source disconnect circuit, the safety signal, and the servomotor control circuit is not normal.

主权项

1. A servomotor control device comprising:
an inverter for driving a servomotor by converting a direct current into an alternating current and supplying the converted alternating current to the servomotor; a power source disconnect circuit for disconnecting supply of the direct current to the inverter; a servomotor control circuit for controlling the inverter such that the alternating current is supplied to the servomotor when receiving a safety signal, and for controlling the inverter such that the alternating current is not supplied to the servomotor when not receiving the safety signal; and a servomotor monitoring circuit for stopping the servomotor by stopping transmission of the safety signal to the servomotor control circuit when determining to stop the servomotor, and for stopping the servomotor by disconnecting the supply of the direct current to the inverter with the power source disconnect circuit and stopping the transmission of the safety signal to the servomotor control circuit when determining that at least one of the power source disconnect circuit and the servomotor control circuit is not normal.