| 摘要 |
PROBLEM TO BE SOLVED: To effectively prevent the disconnection of a wire and the overheating of an electromagnetic coil. SOLUTION: The electromagnetic driving equipment comprises an electromagnetic driving unit 1 that has a electromagnetic coil 1a and a mobile member 1b and drives the mobile member 1b by exciting the exciting coil 1a, an exciting unit 2 that excites the exciting coil 1a, and a control unit 3 controlling the excitation by the exciting unit 2. Further, the equipment is provided with an exciting time counting unit 4 for counting an exciting time of the exciting unit 2, an elapsed-time counting unit 5 for counting the elapsed-time of the exciting unit 2 comprising the exciting time and non-exciting time, a computing unit 6 for computing the ratio of the exciting time occupied in the elapsed-time based on the exciting time information from the exciting time counting unit 4 and the elapsed-time information from the elapsed-time counting unit 5, and a switching unit for switching over the exciting control of the control unit 3 so that the computation results obtained by the computing unit 6 may lower the temperature of the electromagnetic coil 1a under the conditions exceeding the predetermined ratio.
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