초록 ▼

An electronic controller includes an internal power stabilizing circuit which supplies stabilized power to drive circuits and a fail-safe relay drive circuit all built within the controller, a monitoring unit which monitors the operational states of the circuits in the controller based on the state

An electronic controller includes an internal power stabilizing circuit which supplies stabilized power to drive circuits and a fail-safe relay drive circuit all built within the controller, a monitoring unit which monitors the operational states of the circuits in the controller based on the state of power output of the power stabilizing circuit, and a drive unit which drives the fail-safe relay drive circuit in response to the detection by the monitoring unit of a predetermined output state of the power stabilizing circuit indicative of the occurrence of abnormality in at least one of the circuits including the drive circuits within the controller.

대표청구항 ▼

[ What is claimed is:] [1.] An electronic controller, having a fault diagnosing function, for operating an actuator, said controller comprising:a drive circuit for driving said actuator;an internal power stabilizing circuit for stabilizing power received from an external power source and for supplyi

[ What is claimed is:] [1.] An electronic controller, having a fault diagnosing function, for operating an actuator, said controller comprising:a drive circuit for driving said actuator;an internal power stabilizing circuit for stabilizing power received from an external power source and for supplying stabilized power to said drive circuit;monitoring means for monitoring an operational state of said drive circuit based on a state of power output of said internal power stabilizing circuit and for detecting a predetermined operational state of said drive circuit; anddetermination means for determining an occurrence of abnormality in said drive circuit responsive to detection of a predetermined operational state by said monitoring means.