Patent ID: 8860258

Claim:
A control system comprising: an input instrument configured to generate a signal indicating permission and prohibition of running of a load; a power-supply unit configured to receive an input signal output from the input instrument, supply a three-phase driving power to the load when the load is permitted to run by the input signal from the input instrument, and cut off the supply of the three-phase driving power to the load when the load is prohibited from running by the input signal; and a monitoring device configured to monitor the input instrument and the power-supply unit, wherein the power-supply unit includes a first output unit and a second output unit, the first output unit is configured to cut off the supply of the three-phase driving power to the load when the load is prohibited from running by the input signal, the second output unit is configured to cut off the supply of the three-phase driving power to the load when a monitoring result of the monitoring device indicates an abnormal state in at least one of the input instrument and the first output unit, and wherein the control system is compatible with category 2 of ISO 13849-1.