Efficient and energy-saving contactor control circuit

Abstract

The invention discloses an efficient and energy-saving electromagnetic control circuit, and belongs to the technical field of contactors. The electromagnetic control circuit comprises a full-bridge driving chip U1 used for controlling the function of a contactor, an energy storage circuit connected with a power supply, a voltage stabilizing circuit which is connected with the energy storage circuit and is used for stabilizing an input voltage and then sending the input voltage to the full-bridge driving chip U1, a voltage signal detecting and adjusting circuit which is connected with the power supply and is used for detecting and adjusting an input voltage signal and carrying out filtering overvoltage protection, a three-stage inverter connected with the voltage signal detection and regulation circuit, a pull-in delay regulation circuit used for controlling output of pull-in voltage to enable a coil of a contactor KM to be powered on in the forward direction and then to be turned off in a delayed mode, and a release delay regulation circuit used for controlling output of release voltage to enable the coil of the contactor KM to be powered on in the reverse direction and then to be turned off in a delayed mode. According to the efficient and energy-saving contactor control circuit, the energy-saving effect is obvious, and the energy-saving effect can reach 98% or above; and single-line inching control opening and closing is realized.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic control, and in particular relates to a high-efficiency and energy-saving contactor control circuit. Background technique [0002] Compared with ordinary contactors, the magnetic holding contactor has the biggest difference in that it is mainly used in dense installation environments or special equipment for high-current on-off control. Its main feature is that the main circuit on-off operation only needs to operate the coil Apply a forward or reverse instantaneous pulse, because the permanent magnet material is used as the closing power of the main circuit, so the contact pressure of the main circuit is high, the working voltage is high, the contact resistance is small, energy saving and environmental protection, and the operation is reliable under the working condition of super long time operation And the coil produces almost no energy consumption, but after the ordinary contactor is pul...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-efficiency and energy-saving contactor control circuit to solve the problem that the magnetic holding contactor cannot be opened and closed by single-line jog control

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