CPS (Control and Protective Switching Device) based control system for air conditioner

Abstract

The invention discloses a CPS (Control and Protective Switching Device) based control system for an air conditioner. The system comprises a CPS, wherein a first normally-opened auxiliary contact of the CPS is connected in series with a coil control terminal of an intermediate relay KA2, and a first normally-closed auxiliary contact K1.1 of the CPS is connected in series with a green indicator light HG; a second normally-opened auxiliary contact of the CPS is connected to an opening control terminal of an electric regulating air valve YM1, and a second normally-closed auxiliary contact of the CPS is connected to a closing control terminal of the electric regulating air valve YM1; a third normally-opened auxiliary contact of the CPS is connected to the opening control terminal of an electric regulating water valve YM2, and the third normally-closed auxiliary contact of the CPS is connected to the closing control terminal of the electric regulating water valve YM2; a fault signal normally-opened contact of the CPS is connected in series with the coil control terminal of an intermediate relay KA3; a main body short circuit signal normally-opened contact of the CPS is connected in series with a blue indicator light HB. According to the system, the electric regulating air valve and the electric regulating water valve are controlled through the CPS control and a protecting switch; the advantages of the CPS control and the protection switch are utilized to realize the safety protection and alarming functions.

Description

technical field [0001] The invention belongs to the technical field of air-conditioning control, and in particular relates to a CPS-based air-conditioning control system. Background technique [0002] Traditional air conditioning control systems are usually composed of multiple single-function relays, overload protectors, circuit breakers, contactors, isolators and other electrical switching devices. This method contains many electrical components, the system is bulky, and the safety of the entire system is poor. [0003] CPS (Control and Protective Switching Device --- Control and Protective Switching Device) integrates traditional circuit breakers (fuse), contactors, overload (or over-current, phase failure) protection relays, starters, isolators, motor comprehensive protectors and other low-voltage The main functions of electrical products include remote automatic control and local direct human control, panel indication and electromechanical signal alarm functions, overvo...

AI Technical Summary

Problems solved by technology

[0002] The traditional air conditioning control system is usually composed of multiple single-function relays, overload protectors, circuit breakers, contactors, isolators and other electrical switching devices. This method contains many electrical components, the system is bulky, and the safety of the entire system is poor.

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