The invention provides a mine hoist safety circuit instant open circuit fault capturing circuit, and belongs to the field of mine machines. The mine hoist safety circuit instant open circuit fault capturing circuit comprises an optical coupling relay, four pins of the optical coupling relay are electrically connected with a resistor R30, one end of the resistor R30 is electrically connected with a capacitor C17, the other end of the capacitor C17 is electrically connected with three pins of the optical coupling relay, and the other end of the capacitor C17 is electrically connected with the three pins of the optical coupling relay. One pin of the optical coupling relay is electrically connected with an AC220L1 line end, and the other pin of the optical coupling relay is electrically connected with an AC220N1 line end. When 220V is switched off, an optical coupling relay is not switched on, the level of SIGIN1 is high level, when 220V is switched on, the optical coupling relay is switched on, a three-pin and a four-pin are approximately short-circuited, and at the moment, the level of SIGIN1 is low level; therefore, the logic that a high level is detected when 220V is switched off and a low level is detected when 220V is switched on is realized.
本申请提供了矿井提升机安全回路瞬间断路故障捕捉电路,属于矿机领域。该矿井提升机安全回路瞬间断路故障捕捉电路,包括光耦合继电器,所述光耦合继电器的四引脚上电性连接有电阻R30,所述电阻R30的一端电性连接有电容C17,所述电容C17的另一端与所述光耦合继电器的三引脚电性连接,所述光耦合继电器的一引脚上电性连接有AC220L1线端,所述光耦合继电器的二引脚上电性连接有AC220N1线端。本发明中当220V断开时,光耦合继电器不导通,SIG_IN1电平是高电平,当220V导通时,光耦合继电器导通,三引脚和四引脚近似短路,此时SIG_IN1为低电平;这样就实现了在220V断开时检测为高电平,当220V导通时检测为低电平的逻辑。
Mine hoist safety circuit instant open circuit fault capturing circuit
矿井提升机安全回路瞬间断路故障捕捉电路
2022-03-25
Patent
Electronic Resource
Chinese
IPC: | B66B Aufzüge , ELEVATORS |
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|Engineering Index Backfile | 1949
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