OVERLOAD PROTECTION CIRCUIT OF DC SERVO MOTOR

摘要

An overload protecting circuit of a direct current servo electromotor capable of preventing a driving current higher than a rated current from being continuously supplied to an electromotor is disclosed. In the overload protecting circuit of a direct current servo electromotor, a detector detects a current which is supplied to an electromotor. An integrator(7) integrates the current detected by the detector. A comparison circuit(8) compares the integrating amount by the integrator(7) with reference power amount according to a duty cycle of the electromotor. A driver(4) controls a driving of the electromotor based on the comparison result of the comparison circuit(8).