Before introducing the role of the relay to you, Shenzhen Ouying Automation Control System Co., Ltd. first introduces the concept of the relay. The so-called relay is an automatic switching element with isolation function, which is widely used in remote control, telemetry, communication, automatic Control, mechatronics and power electronics are among the most important control components.

      The relay generally has an induction mechanism (input part) that can reflect certain input variables (such as current, voltage, power, impedance, frequency, temperature, pressure, speed, light, etc.); there are "on", "on" The actuator (output part) controlled by the "off" control; between the input part and the output part of the relay, there is an intermediate mechanism (drive part) that couples and isolates the input quantity, functions and drives the output part.

        As a control element, in summary, the relay has the following functions:

        The role of the relay 1: expand the control range

        For example, when the control signal of the multi-contact relay reaches a certain value, the multi-circuit can be switched, disconnected and connected at the same time according to different forms of the contact group.

        The second role of the relay: amplification

        For example, sensitive relays, intermediate relays, etc., can control very large power circuits with a very small amount of control.

        The role of the relay three: integrated signal

        For example, when a plurality of control signals are input to a multi-winding relay in a prescribed form, after comparison and synthesis, a predetermined control effect is achieved.

        The role of the relay four: automatic, remote control, monitoring

        For example, the relays on the automatic device, together with other electrical appliances, can form a program control circuit to achieve automatic operation.

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