| 摘要 |
PURPOSE:To enable loads and sensors connected to a control portion to be self-diagnosed individually with an easy and inexpensive circuit configuration and failure analysis when an abnormality occurs to be performed readily and positively and at the same time prevent a secondary abnormality from occurring by cutting off a power supply to a device main body. CONSTITUTION:A title item is provided with a control signal output means which supplies control signals to a plurality of targets to be controlled, a means 2 for detecting an amount of current which detects the amount of current which flows to the targets to be measured in response to a change in output of a control signal, a criterion means which judges normality/abnormality of the control signal output means 1 based on the amount of current which was detected, and a power supply control means 4 which cuts off a power supply to the device according to the criterion result by the criterion means. |
