| 摘要 |
PURPOSE:To save the consumption of power and suppress the deterioration by aging of an used electronic part by automatically interrupting a control power source to at least a display part by a control part not in operation. CONSTITUTION:A main circuit 23 has a main circuit equipment such as an electromagnetic contactor 25, and an operating device and control part 30 for operating a load 22, and the arithmetic logic circuit 31 of the control part 30 controls the main circuit equipment according to the input signal by the operating device and the magnitude of the main circuit current on the basis of a preliminarily stored control program. The judging circuit 41 of the control part 30 judges the presence or absence of an operation signal for opening and closing the electromagnetic contactor 25, and conducts the current carrying and interruption to the control power source in a load control device on the basis of this judgment. When the operation signal for opening the electromagnetic contact 25 is inputted to the judging circuit 41, a DC power source circuit 29 interrupts the control power source in the load control device excluding an input circuit 34, a detecting circuit 40 and the judging circuit 41.
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