Functional monitor for electrical load controlled by switch - measures voltage and/or current of control line by fault identification circuit when fault detection circuit is activated

摘要

An arrangement monitoring the functionality of an electrical load controlled by a switch in a control line contans a fault identification circuit (30) which drives a fault detection circuit (10) associated with the load (V1). The potential on the control line (A1) and/or the current flowing in it are measured by the fault identification circuit when the fault detection circuit is activated. The fault detection circuit is connected in parallel with the load. ADVANTAGE - Detects different fault conditions.