KJ4010X1-BG1 12P0830X072 EMERSON

304A8483G10
304A8483G12
304A8483G21A1A
304A8483G31A1A
304A8483G41A1A
304A8483G51A1A
DS3800HMPF1E1F
DS3800HMPF1E1E
DS3800HAIC1B1A
DS3800HAIC1D1B

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描述

利用定时器与计数器级联组合可以扩大延时时间,如图5-13所示。图中T4形成一个20s的自复位定时器,当X4接通后,T4线圈接通并开始延时,20s后T4常闭触点断开,T4定时器的线圈断开并复位,待下一次扫描时,T4常闭触点才闭合,T4定时器线圈又重新接通并开始延时。所以当X4接通后,T4每过20s其常开触点接通一次,为计数器输入一个脉冲信号,计数器C4计数一次,当C4计数100次时,其常开触点接通Y3线圈。可见从X4接通到Y3动作,延时时间为定时器定时值(20s)和计数器设定值(100)的乘积(2000s)。图中M8002为初始化脉冲,使C4复位。

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