Single-button forward and reverse rotation automatic stop control circuit

A control circuit, forward rotation technology, applied in the control system, motor generator control, electrical components and other directions, can solve problems such as power supply short-circuit accident, easy operation error, mechanical accident, etc., to achieve reliable operation, ensure normal operation, and easy operation Effect

Pending Publication Date: 2020-08-25
ANHUI HUAMAO TEXTILE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is easy to operate incorrectly, press the wrong button, and cause mechanical accidents
Or

Method used

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  • Single-button forward and reverse rotation automatic stop control circuit

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Embodiment Construction

[0016] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0017] Depend on figure 1 It can be seen that the single-button forward and reverse self-stop control circuit of this embodiment includes the secondary line power port A and power port B connected to an external 220V AC power supply, and also includes the forward rotation contactor KM1, the reverse rotation contactor KM2, and the forward rotation intermediate relay KA1, reverse intermediate relay KA2, reversing intermediate relay KA3, thermal relay FR, forward rotation time relay KT1, reverse rotation time relay KT2, double-pole circuit breakers QF1 and QF2, button SB, and forward rotation indicator HD1 and ...

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Abstract

The invention discloses a single-button forward and reverse rotation automatic stop control circuit. The circuit comprises a secondary line power supply port A and a power supply port B which are externally connected with a 220V alternating current power supply, a forward contactor KM1, a reverse contactor KM2, a forward intermediate relay KA1, a reverse intermediate relay KA2, a reversing intermediate relay KA3, a thermal relay FR, a forward time relay KT1, a reverse time relay KT2, bipolar circuit breakers QF1 and QF2, a button SB, a forward indicator lamp HD1 and a reverse indicator lamp HD2. The circuit is simple, easy and convenient to operate and reliable in operation, multiple protection is achieved, mechanical accidents and short-circuit accidents of a power supply cannot be causedby mistakenly pressing a positive and negative rotation button, and therefore normal operation of equipment is guaranteed.

Description

technical field [0001] The invention relates to a control circuit, in particular to a forward and reverse self-stop control circuit. Background technique [0002] In the field of industrial manufacturing, the motor needs to be reversed in daily use. It can be said that the forward and reverse of the motor is widely used. For example, electric planers for driving, woodworking, bench drills, wire cutters, dryers and lathes. In order to enable the motor to run forward and reverse, two contactors KM1 and KM2 can be used to change the phase sequence of the three-phase power supply of the motor. Traditional circuits generally use three buttons: forward rotation button, reverse rotation button, and stop button. However, it is easy to make mistakes in operation, press the wrong button, and cause mechanical accidents. Or the two contactors are closed at the same time, causing a short circuit accident of the power supply. Contents of the invention [0003] The purpose of the pre...

Claims

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Application Information

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IPC IPC(8): H02P1/10H02P1/02H02P3/02
CPCH02P1/022H02P1/10H02P3/02
Inventor 舒畅
Owner ANHUI HUAMAO TEXTILE
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