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YongTeng Electronics Co.,Ltd.
ADD£ºEast Industry Zone, Hongqiao, Yueqing, Zhejiang
TEL£º0086-577-61312918 62359608
FAX£º0086-577-62359798
QQ£º1456899058
E-MAIL£ºcnytele@163.com
http://cnyongt.cn.alibaba.cm
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Why to control the motor with two button switches? |
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¡¡¡¡One is to start a stop, a switch is not it? Press a switch on two times.
¡¡¡¡Click to start the motor start, and then press stop motor stop, I will stop after the stop, the start button will reset it, if you will be how to do with a switch can be. But also with electronic circuits, such as flip flops, shift registers, PLC controller.
¡¡¡¡The one you said is an old-fashioned push button switch, which is simple in structure and easy to install. So still in use.
¡¡¡¡It is only when they open in a moment, a hand is broken. That is reset. So why don't you stop after you press it? That's because it's connected to the AC contactor. When the contactor is closed, there is a set of contacts to start the switch is short.
¡¡¡¡So you don't press the button. The stop button is connected in series to the start button, which is a power down (when the power is switched off). Contactor is no power supply, and immediately separated. After the separation of the start button is disconnected, the short circuit of the start button is also separated from the contactor. Stop button reset power but has to pass this task the start button. In a state of stop. Once again, according to the start and the action, the contact of the contactor is short to maintain the open state. |
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