| 摘要 |
In an elevator safety device, a brake device puts brakes to brake a car through an operation of a safety relay main contact provided to a safety circuit. When the car stops during normal operations, a safety relay instruction signal for operating the relay main contact to such a direction that the brake device puts brakes is generated from a detection circuit. Then, the detection circuit detects whether or not the safety relay main contact is operated in accordance with the safety relay instruction signal.
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