1746-OA8++1746-OA8现货

1746-OA8
1746-OA8
1746-OA8
输入信号X00消失时，定时器线圈TOO通电，到达设定时间后，TOO常闭触点断开，Y00线圈断电。因此构成了常开断电延时触点。

在对某触点即需要通电延时，又需要断电延时，则可采用图7(b)由两个定时器组成的电路。此电路相当于常开通电延时闭合、断电延时断开触点。由此可见，利用PLC内部继电器组成的延时电路在选型、工艺、改装等各方面都要比普通时间继电器灵活方便得多。

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