| 摘要 |
PROBLEM TO BE SOLVED: To enable a vehicle's operator to start the operation safely without troubling him, by operating a runaway preventive means, when he judges abnormality by the detection level of a passed current, by passing a current at a specified value in an armature, at a point in time when a contractor for advance and retreat is turned on. SOLUTION: When this controller detects the turning-on of the a switch 16 for advance by a detecting circuit 18 after finish of the initial setting of a microcomputer 13, this drives a contractor for advance by a drive circuit 25 to make a contact 5a, and also when this detects the turning-on of switch 17 for retreat by a detecting circuit 19, this drives a contractor 6 for retreat by a drive circuit 26 to make a contact 6a. Then, at a point in time when the contractor 6 for retreat is turned on, this passes a current at a specified value to the armature 4a of a motor 4 for running, and judges the abnormality in the current detector 3 by the detection level of the passes current, and when this judges it to be abnormality, the executes runaway preventive treatment. Hereby, a vehicle's operator can start the operation safely without being troubled. |
