摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power supply control circuit for work machine capable of completely preventing a battery from being exhausted by automatically stopping power consumption after transiting to an idle stop state. <P>SOLUTION: A power supply control circuit includes a self-hold relay 8 directly driven by an output of a relay driving signal from a main controller 6 and self-hold relays 10, 12 driven interlocking with the relay 8, which are connected to an electric circuit for connecting a key-on power supply with a main controller 6 and an electric circuit for connecting an accessory power supply with an accessory 2. The main controller 6, when a gate lock switch 6 is switched to a lock position with an engine driven, outputs an engine stop signal to stop the engine after the lapse of a predetermined time, and outputs a relay driving signal and switches the relay 8 to a conduction state and the relays 10, 12 to a non-conduction state. <P>COPYRIGHT: (C)2012,JPO&INPIT |