Circuit of in-place rotary knobs of electric actuator

Abstract

The invention provides a circuit of in-pace rotary knobs of an electric actuator. The circuit of the in-pace rotary knobs of the electric actuator comprises a casing, a main control module and a rotary knob module, wherein the outside of the casing is provided with the in-pace control rotary knob and the in-pace operation rotary knob, and the in-pace control rotary knob and the in-pace operation rotary knob are both provided with magnets; the main control module comprises a micro-control unit, a power supply control unit controlled by the micro-control unit and a first plug-in module with 5 ports, and the power supply control unit is provided with a first end, a second end and a third end; the rotary knob module is arranged inside the casing and is connected with the main control module through an external connecting wire, the rotary module is provided with a second plug-in unit with a first port, a second port, a third port, a forth port and a fifth port, the first port, the second port, the third port and the forth port are respectively connected with a reed switch used for sensing the position of the magnets. The circuit of the in-pace rotary knobs of the electric actuator can improve detection means and judging functions of an electric actuator reduce installation and material costs and probability of fault points and improve reliability of the control circuit.

Description

technical field [0001] The invention relates to a control circuit, in particular to a local knob circuit of an electric actuator. Background technique [0002] In order to improve the sealing and safety of the intelligent electric actuator to achieve dustproof, waterproof and anti-riot (IP68, ExiaIICT4), the local knob of the electric actuator often adopts a non-invasive design, which does not destroy the integrity of the front cover of the electric actuator. Magnetic induction path to achieve local control and switch valve. The local knob of the electric actuator is composed of two knobs, the local control knob and the local operation knob. The local control knob can switch between local control function, local stop function and remote control function through the knob. The local operation knob can be switched to the function of opening the valve locally and closing the valve locally through the knob. [0003] In the prior art, a magnet is respectively installed on the l...

AI Technical Summary

Problems solved by technology

[0008] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a local knob circuit of the electric actuator, which is used to solve the problems of high material cost, inconvenient installation, production and maintenance in the prior art, and reliability during use and wear. Low reliability, many fault points, and low detection ability

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