MOTOR CONTROL CIRCUIT CAPABLE OF PREVENTING THE MALFUNCTION OF A MOTOR DUE TO THE RELAY CONTACT FAULT

摘要

PURPOSE: A motor control circuit is provided to improve the response speed of an input/output circuit for controlling a motor by directly connecting a PLC(Programmable Logic Controller) with a motor drive.;CONSTITUTION: A PLC(110) provides a control signal for controlling a motor(10). The PLC comprises a central control part, an input part, and an output part. The output part transfers the result of a processed signal to a controlled target. A motor driver(120) outputs a driving signal for driving the motor by amplifying a current of the control signal. The motor driver comprises a photocoupler(122) opening and closing a circuit according to the control signal.;COPYRIGHT KIPO 2010