Servomotor control device and production system equipped with the control device
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United States of America Patent
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Dec 19, 2017
Issued Date -
N/A
app pub date -
Jan 29, 2015
filing date -
Jan 30, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
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.
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