AUTOMATION DISTRIBUTION SYSTEM

摘要

PURPOSE: An automation distribution system is provided to prevent wrong operation by realizing a circuit capable of preventing operation of a control relay and exactly and stably operating a remote control command. CONSTITUTION: An on-off controller controls an automation distribution system. The first CPU controls the on-off controller. The second CPU controls the first CPU according to a received external signal. A wrong operation preventing apparatus(120) controls a contact point of a relay of the on-off controller according to a control of the second CPU. The wrong operation preventing apparatus includes an inverter(121), a photocoupler and a relay(123). The inverter(121) inverts the control output signal of the second CPU. The photocoupler makes an output of the inverter as an input. The relay(123) is driven by an output of the photocoupler.