UNIT FOR CONTROLLING ELECTROMAGNETIC RELAY, AND METHOD FOR CONTROLLING ELECTROMAGNETIC RELAY

摘要

A relay control unit (1a) includes a control circuit (2a) which (i) calculates external information and (ii) changes, depending on the external information, a controlling value in accordance with which PWM control is carried out with respect to a relay (6), the external information encompassing: a temperature of the relay (6) which temperature is detected via a temperature detecting circuit (11); an on- or off-state(s) of other relay(s) adjacent to the relay (6); a value of vibration detected by a vibration detecting sensor (4); and a coil voltage monitored by a voltage monitoring circuit (5).