| 摘要 |
PURPOSE:To realize equipment constitution stabilized and with high reliability, by connecting an IC relay to an electromagnetic contactor and a hybrid. CONSTITUTION:The main circuit of forward and reverse contacts 12F and 13R of forward and backward rotating electromagnetic contactors 12 and 13, and the main circuit 19 of forward and reverse common TRIACs 16-18, are connected in parallel between a breaker 11 and an induction motor 14. The IC relay 20 is formed by making the main circuit 19 into an IC with a control part 10, and it is connected to the electromagnetic contactors 12 and 13, and the hybrid. The control part 10 consists of a forward/reverse input circuit, a forward/reverse TRIAC time setting circuit, a switching circuit, a forward/ reverse switching time circuit, a forward/reverse OR circuit, a forward/reverse output circuit, and a forward/reverse TRIAC gate circuit, etc.
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