SAFETY CIRCUIT OF HEATING EQUIPMENT

摘要

PURPOSE:To securely prevent a load from malfunctioning by connecting a switching part which turns off the cable run of a load driving circuit side or the load side associatively with the OFF operation of a start switch. CONSTITUTION:A control circuit 2 and the switching part 1 start up by the ON operation of the start switch 4 and the load driving circuit 3 starts up with a signal outputted from the switching part 1; and a load driving relay R1 operates associatively with the startup of the load driving circuit 3 and the contact r1 is made. When the start switch 4 is turned on, the load driving circuit 3 starts up with the driving signal outputted from the switching part 1 to turn on the load driving relay R1 and the contact r1 is made to drive the load 6. With the start switch 4 OFF, the startup state of the control part 2 is reset and the switching part 1 turns off, so that the load driving circuit 3 and a power circuit 5 are electrically disconnected from each other.