Intelligent motor control system

Abstract

The utility model discloses an intelligent motor control system, which comprises a manual-automatic switching device, a manual start button, a manual stop button, an operation indicating lamp, a time switch, a contactor and a motor, the utility model has the characteristics of adopting the switching between manual control and automatic control, being anti-interference, convenient to install, long in service life, and capable of operating safely and reliably for a long time.

Description

Technical Field

[0001] The utility model belongs to the technical field of intelligent motor control equipment, in particular to an intelligent motor control system. Technical Background

[0002] In actual production, the traditional motor control circuit requires external control signals under automatic conditions, which only realizes semi-automatic control. The intelligent motor control system can realize the scheduled start and stop of the motor under automatic conditions, which plays a good role in realizing industrial automation and optimizes the allocation of power resources. Different schemes can be adjusted differently, and it will be safer for the system. Summary of the invention

[0003] The purpose of the utility model is to improve the deficiencies of the prior art and provide an intelligent motor control system which has a simple production process, high reliability, excellent automatic control and can operate safely and reliably for a long time.

[0004] The purpose of the utility model is achieved in this way, an intelligent motor control system, characterized in that 2 ends of the miniature circuit breaker QF are connected to one end of the normally closed emergency stop knob switch SB3 through the fuse FU1, and the other end of the normally closed emergency stop knob switch SB3 is connected to the parallel end of the manual automatic transfer switch SA and the time control switch KG power supply L end; 4 ends of the manual automatic transfer switch SA are connected to one end of the normally open contact of the time control operation relay KA1, 2 ends of the manual automatic transfer switch SA are connected to one end of the manual stop button SB2, and the other end of the manual stop button SB2 is connected to the manual start button The parallel end of the normally open contact of the button SB1 and the contactor KM, the parallel end of the manual start button SB1, the other end of the normally open contact of the contactor KM, and the other end of the normally open contact of the time-controlled operation relay KA1 are connected to one end of the normally closed contact of the thermal relay KH; the other end of the normally closed contact of the thermal relay KH is connected to the parallel end of the contactor KM coil and the operation indicator light HR; the L' end of the time-controlled switch KG is connected in series with the coil of the time-controlled operation relay KA1 and then connected to the N' end; the contactor KM coil, the operation indicator light HR, and the N end of the time-controlled switch KG are connected in parallel and then connected to the control power supply N.

[0005] Compared with the prior art, the utility model has the following significant features and positive effects: the utility model realizes intelligent control of motor start and stop, has strong compatibility, and can feed back manual and automatic state signals to the superior control system; it can ensure safe use and reduce safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a structural schematic diagram of the utility model.

[0007] Figure 2 Secondary wiring diagram of the prior art. DETAILED DESCRIPTION

[0008] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0009] An intelligent motor control system, referring to Figure 2 The 2 ends of the miniature circuit breaker QF are connected to one end of the normally closed emergency stop knob switch SB3 through the fuse FU1, and the other end of the normally closed emergency stop knob switch SB3 is connected to the parallel end of the 1 and 3 ends of the manual-automatic transfer switch SA and the power supply L end of the time control switch KG; the 4 end of the manual-automatic transfer switch SA is connected to one end of the normally open contact of the time control operation relay KA1, and the 2 end of the manual-automatic transfer switch SA is connected to one end of the manual stop button SB2. One end of the manual start button SB1 and one end of the normally open contact of the contactor KM are connected in parallel and then connected to the manual stop button SB2. The other end of the manual start button SB1, the other end of the normally open contact of the contactor KM, and the other end of the normally open contact of the time-controlled operation relay KA1 are connected in parallel and then connected to one end of the normally closed contact of the thermal relay KH; the other end of the normally closed contact of the thermal relay KH is connected to the parallel end of the contactor KM coil and the operation indicator light HR; the L' end of the time-controlled switch KG is connected in series with the coil of the time-controlled operation relay KA1 and then connected to the N' end of the time-controlled switch KG; the contactor KM coil, the operation indicator light HR, and the N end of the time-controlled switch KG are connected in parallel and then connected to the control power supply N.

[0010] When using the utility model, the utility model is connected to a conventional secondary wiring circuit. The conventional secondary wiring circuit is as follows: Figure 2 As shown, no further details are given here. When the handle of the manual-automatic conversion switch SA is in the manual position, the start button SB1 is pressed, the contactor KM coil is energized, and the contactor KM contacts close to self-lock the start button; when the handle of the manual-automatic conversion switch SA is in the automatic position, the time-controlled switch KG reaches the running set time, the time-controlled running relay KA1 coil is energized, the time-controlled running relay KA1 contacts are closed, and the contactor KM coil is energized. When the time-controlled switch KG reaches the power-off set time, the time-controlled running relay KA1 coil loses power, the time-controlled running relay KA1 contacts are disconnected, and the connection of the contactor KM is cut off.

Claims

1. An intelligent motor control system characterized by a micro The 2 ends of the circuit breaker QF are connected to one end of the normally closed emergency stop knob switch SB3 through the fuse FU1, and the other end of the normally closed emergency stop knob switch SB3 is connected to the parallel end of the manual-automatic transfer switch SA and the power supply L end of the time control switch KG; the 4 end of the manual-automatic transfer switch SA is connected to one end of the normally open contact of the time control operation relay KA1, and the 2 end of the manual-automatic transfer switch SA is connected to one end of the manual stop button SB2, and the other end of the manual stop button SB2 is connected to the manual start button SB1 and the normally open contact of the contactor KM. The parallel end, the manual start button SB1, the other end of the normally open contact of the contactor KM, and the other end of the normally open contact of the time-controlled operation relay KA1 are connected to one end of the normally closed contact of the thermal relay KH; the other end of the normally closed contact of the thermal relay KH is connected to the parallel end of the contactor KM coil and the operation indicator light HR; the L' end of the time-controlled switch KG is connected in series with the coil of the time-controlled operation relay KA1 and then connected to the N' end; the contactor KM coil, the operation indicator light HR, and the N end of the time-controlled switch KG are connected in parallel and then connected to the control power supply N.

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