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Power relay of industrial control system based on what is
Dec 06, 2016

1) expand the scope of control. For instance, the contact relay control signal reaches a certain value, according to the different forms of contact group, and change, breaking through the road circuit.
2) amplification. For example, sensitive relays, relay, use a very small amount of control, you can control a high power circuit.
3) signal. For example, when more than one control signal at the input in the form of relay windings provided, through a more integrated, achieve the intended effect.
4) automatic, remote control and monitoring. For example, the automatic device of relays and other equipment, and can form a control line, in order to achieve automated operation.