Motor safety control circuit system

Abstract

The invention relates to the field of motor control, in particular to a motor safety control circuit system. The motor safety control circuit system comprises a protection circuit, a communication circuit system and a switch circuit, wherein the control circuit can be used for generating a four-phase control signal, can be applied to two-phase double-pole and four-phase single-pole stepping motors controlled by a computer, and can be used for controlling the stepping motors in single four-step, double four-step and four-phase eight-step ways; a PWM (Pulse-Width Modulation) chopper circuit in a chip can be used for adjusting current of a motor winding in a stepping motor winding in a switching mode; a fuser FU is applied to short-circuit protection; overcurrent relays KI1 and KI2 are applied to overcurrent protection; an under-voltage relay KUD is applied to under-voltage protection of a main circuit; a thermal relay FR is applied to overload protection; a normally open contact KUD (1-3) of a zero-voltage relay KUD and a contact QM0 of a master switch QM construct a zero-position self-locking link; a positive contactor KM1 and a negative contactor KM2 construct an interlocking link. The motor safety control circuit system is convenient to operate, has higher safety, can be used for realizing remote control, and has very high creativity.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a motor safety control circuit system. Background technique [0002] The motor is the main driving force of national production, and the annual power consumption accounts for 65% to 70% of the country's total power generation. There are generally two types of motors: synchronous motors and asynchronous motors. Both the rotor and the stator of the synchronous motor are energized, so they have the same power, so that the rotor and the stator rotate synchronously. The power factor of the synchronous motor is generally higher than that of the asynchronous motor, but the torque of this motor is small, and it cannot drive a large load at the start, and the load that can be driven at the start will fail due to the load being too small after reaching a stable rotation. resulting in low power factor. However, there is no direct electrical connection between the stator and rotor o...

AI Technical Summary

Problems solved by technology

However, there is a lack of technical solutions for how to provide a motor safety control circuit system with simple structure, convenient operation, higher safety, and remote control.

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