CN214069834U

CN214069834U - Improved circuit for controlling positive and negative rotation of motor

Info

Publication number: CN214069834U
Application number: CN202023103280.9U
Authority: CN
Inventors: 王志巧; 杨国松
Original assignee: Wuhan Yt Automation Equipment Co ltd
Current assignee: Wuhan Yt Automation Equipment Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-08-27
Anticipated expiration: 2030-12-21

Abstract

The utility model discloses an improved circuit for motor is just reversing control, include: the field control circuit comprises a three-gear knob F405aS1, a three-gear knob F405aS2, a forward rotation relay coil F405aK1, a reverse rotation relay coil F405aK2, an emergency stop button F405aJT, a safety door switch F405aSS, an intermediate relay F405aKA normally-open contact, an intermediate relay F405aKRA and an intermediate relay F405aKRA normally-open contact, wherein the input end of the three-gear knob F405aS1 is electrically connected with a live wire, the first output end of the three-gear knob F405aS1 is electrically connected with the input end of the three-gear knob F405aS2, the first output end of the third-gear knob F405aS2 is electrically connected with one end of the normally open contact of the intermediate relay F405aKA through the forward rotation intermediate relay F405aK1, the improved circuit for controlling the forward and reverse rotation of the motor is provided with an emergency stop button F405aJT, a safety door switch F405aSS, an intermediate relay F405aKA and an electric connection structure thereof to safely power off a field control circuit and a remote PLC control circuit, so that the safety of field operation of maintenance personnel is ensured.

Description

Improved circuit for controlling positive and negative rotation of motor

Technical Field

The utility model relates to a motor control technology field, concretely relates to an improved circuit for motor is just reversing control.

Background

What I know the present 200T production line of use the rubbing crusher adopts is the high-power motor of 90kW, because the power of motor is great, and reliability, the security requirement to the start-up of motor are higher, especially when the motor overhauls, must ensure the reliable outage of motor, consequently, for solving above-mentioned problem, the utility model provides an improved circuit for the control of motor just reversing optimizes the line between the electrical component, ensures maintainer's safe operation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned technique not enough, provide an improved circuit that is used for the positive reverse control of motor, solve a technical problem in the background art at least.

In order to achieve the above technical purpose, the technical solution of the utility model provides an improved circuit for motor is just reversing control, include: the field control circuit comprises a three-gear knob F405aS1, a three-gear knob F405aS2, a forward rotation relay coil F405aK1, a reverse rotation relay coil F405aK2, an emergency stop button F405aJT, a safety door switch F405aSS, an intermediate relay F405aKA normally-open contact, an intermediate relay F405aKRA and an intermediate relay F405aKRA normally-open contact, wherein the input end of the three-gear knob F405aS1 is electrically connected with a live wire, the first output end of the three-gear knob F405aS1 is electrically connected with the input end of the three-gear knob F405aS2, the first output end of the three-gear knob F405aS2 is electrically connected with one end of the intermediate relay F405aKA normally-open contact through the forward rotation intermediate relay F405aK1, the second output end of the three-gear knob F405aS2 is electrically connected with one end of the intermediate relay F405aKA normally-open contact through the reverse rotation relay F405aK2, and the other end of the zero wire relay F405aK 36405 aK relay is electrically connected with the zero wire relay F405aK 36405, the second output of three-gear knob F405aS1 passes through auxiliary relay F405aKRA and zero line electric connection, auxiliary relay F405aKRA normally open contact establishes ties on remote PLC control circuit's the control line, emergency stop button F405 aJT's one end and live wire electric connection, emergency stop button F405 aJT's the other end passes through emergency exit switch F405aSS with auxiliary relay F405 aKA's one end electric connection, auxiliary relay F405 aKA's the other end and zero line electric connection.

Further, the improved circuit for controlling the forward rotation and the reverse rotation of the motor further comprises a motor starting circuit, the motor starting circuit adopts a frequency converter to control the starting and the forward rotation and the reverse rotation, a forward rotation terminal X1 of the frequency converter is electrically connected with one end of a forward rotation relay coil F405aK1 normally open contact, the other end of the forward rotation relay coil F405aK1 normally open contact is electrically connected with a public end CM of the frequency converter, a forward rotation terminal X2 of the frequency converter is electrically connected with one end of a reverse rotation relay coil F405aK2 normally open contact, and the other end of the reverse rotation relay coil F405aK2 normally open contact is electrically connected with the public end CM of the frequency converter.

Further, a normally closed contact of a reverse rotation relay coil F405aK2 is connected in series between the first output end of the third-gear knob F405aS2 and the forward rotation intermediate relay F405aK 1.

Further, a normally closed contact of a forward rotation relay coil F405aK1 is connected in series between the second output end of the third-gear knob F405aS2 and the reverse rotation relay coil F405aK 2.

Compared with the prior art, the beneficial effects of the utility model include: the improved circuit for controlling the positive and negative rotation of the motor adopts the arrangement of an emergency stop button F405aJT, an emergency door switch F405aSS, an intermediate relay F405aKA and an electric connection structure thereof to safely power off a field control circuit and a remote PLC control circuit, so that the safety of field operation of maintenance personnel is ensured, a field box provided with the emergency stop button F405aJT is additionally arranged on the field, and the emergency door switch F405aSS (similar travel switch) which is matched with a self-contained crusher is used for realizing the safety protection of the operation personnel when the motor is stopped when the motor operates abnormally or the motor is normally maintained, when the motor operates normally, an in-place switch of an emergency door is closed, and the emergency stop button uses a closed point.

Drawings

FIG. 1 is a connection diagram of a motor pneumatic circuit in the improved circuit for controlling the forward and reverse rotation of the motor provided by the present invention;

fig. 2 is a connection diagram of a field control circuit and a remote PLC control circuit in the improved circuit for controlling the forward and reverse rotation of the motor.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and fig. 2, the present embodiment provides an improved circuit for controlling forward and reverse rotation of a motor, including: the field control circuit comprises a three-gear knob F405aS1, a three-gear knob F405aS2, a forward rotation relay coil F405aK1, a reverse rotation relay coil F405aK2, an emergency stop button F405aJT, a safety door switch F405aSS, an intermediate relay F405aKA normally-open contact, an intermediate relay F405aKRA and an intermediate relay F405aKRA normally-open contact, wherein the input end of the three-gear knob F405aS1 is electrically connected with a live wire, the first output end of the three-gear knob F405aS1 is electrically connected with the input end of the three-gear knob F405aS2, the first output end of the three-gear knob F405aS2 is electrically connected with one end of the intermediate relay F405aKA normally-open contact through the forward rotation intermediate relay F405aK1, the second output end of the three-gear knob F405aS2 is electrically connected with one end of the intermediate relay F405aKA normally-open contact through the reverse rotation relay F405aK2, and the other end of the zero wire relay F405aK 36405 aK relay is electrically connected with the zero wire relay F405aK 36405, the second output of three-gear knob F405aS1 passes through auxiliary relay F405aKRA and zero line electric connection, auxiliary relay F405aKRA normally open contact establishes ties on remote PLC control circuit's the control line, emergency stop button F405 aJT's one end and live wire electric connection, emergency stop button F405 aJT's the other end passes through emergency exit switch F405aSS with auxiliary relay F405 aKA's one end electric connection, auxiliary relay F405 aKA's the other end and zero line electric connection.

The improved circuit for controlling the positive and negative rotation of the motor adopts the arrangement of an emergency stop button F405aJT, an emergency door switch F405aSS, an intermediate relay F405aKA and an electric connection structure thereof to safely power off a field control circuit and a remote PLC control circuit, so that the safety of field operation of maintenance personnel is ensured, a field box provided with the emergency stop button F405aJT is additionally arranged on the field, and the emergency door switch F405aSS (similar travel switch) which is matched with a self-contained crusher is used for realizing the safety protection of the operation personnel when the motor is stopped when the motor operates abnormally or the motor is normally maintained, when the motor operates normally, an in-place switch of an emergency door is closed, and the emergency stop button uses a closed point.

In this embodiment, the improved circuit for controlling forward and reverse rotation of the motor further includes a motor starting circuit, the motor starting circuit controls starting and forward and reverse rotation by using a frequency converter, a forward rotation terminal X1 of the frequency converter is electrically connected with one end of a forward rotation relay coil F405aK1 normally open contact, the other end of the forward rotation relay coil F405aK1 normally open contact is electrically connected with a common end CM of the frequency converter, a forward rotation terminal X2 of the frequency converter is electrically connected with one end of a reverse rotation relay coil F405aK2 normally open contact, and the other end of the reverse rotation relay coil F405aK2 normally open contact is electrically connected with the common end CM of the frequency converter.

A normally closed contact of a reverse rotation relay coil F405aK2 is connected in series between the first output end of the third-gear knob F405aS2 and the forward rotation intermediate relay F405aK1, and a normally closed contact of a forward rotation relay coil F405aK1 is connected in series between the second output end of the third-gear knob F405aS2 and the reverse rotation relay coil F405aK2, so that safety interlocking is realized.

In this embodiment, the three-phase power supply line of motor is connected in series with power air switch F405aQ to still be provided with digital induction ammeter on the three-phase power supply line of motor, digital induction ammeter adopts the mode of 485 communications to realize with the communication of host computer, adopts the change of the electric current of monitoring during motor operation to assist the monitoring motor whether to operate normally.

Preferably, one output end of the power supply air switch F405aQ is electrically connected with one end of the relay coil F405aKQ, the other end of the relay coil F405aKQ is communicated with a zero line, and a normally open contact of the relay coil F405aKQ is connected in series between the normally open contact of the intermediate relay F405aKA and the zero line, so that multi-stage safety protection is realized.

The working principle is as follows: the improved circuit for controlling the positive and negative rotation of the motor adopts the arrangement of an emergency stop button F405aJT, an emergency door switch F405aSS, an intermediate relay F405aKA and an electric connection structure thereof to safely power off a field control circuit and a remote PLC control circuit, so that the safety of field operation of maintenance personnel is ensured, a field box provided with the emergency stop button F405aJT is additionally arranged on the field, and the emergency door switch F405aSS (similar travel switch) which is matched with a self-contained crusher is used for realizing the safety protection of the operation personnel when the motor is stopped when the motor operates abnormally or the motor is normally maintained, when the motor operates normally, an in-place switch of an emergency door is closed, and the emergency stop button uses a closed point.

The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An improved circuit for controlling the forward and reverse rotation of a motor, comprising: the field control circuit comprises a three-gear knob F405aS1, a three-gear knob F405aS2, a forward rotation relay coil F405aK1, a reverse rotation relay coil F405aK2, an emergency stop button F405aJT, a safety door switch F405aSS, an intermediate relay F405aKA normally-open contact, an intermediate relay F405aKRA and an intermediate relay F405aKRA normally-open contact, wherein the input end of the three-gear knob F405aS1 is electrically connected with a live wire, the first output end of the three-gear knob F405aS1 is electrically connected with the input end of the three-gear knob F405aS2, the first output end of the three-gear knob F405aS2 is electrically connected with one end of the intermediate relay F405aKA normally-open contact through the forward rotation intermediate relay F405aK1, the second output end of the three-gear knob F405aS2 is electrically connected with one end of the intermediate relay F405aKA normally-open contact through the reverse rotation relay F405aK2, and the other end of the zero line relay F405aK 36405 aK relay is electrically connected with the zero line F405aK relay, the second output of three-gear knob F405aS1 passes through auxiliary relay F405aKRA and zero line electric connection, auxiliary relay F405aKRA normally open contact establishes ties on remote PLC control circuit's the control line, emergency stop button F405 aJT's one end and live wire electric connection, emergency stop button F405 aJT's the other end passes through emergency exit switch F405aSS with auxiliary relay F405 aKA's one end electric connection, auxiliary relay F405 aKA's the other end and zero line electric connection.

2. The improved circuit for controlling the forward and reverse rotation of a motor according to claim 1, further comprising a motor starting circuit, wherein the motor starting circuit adopts a frequency converter to control the starting and the forward and reverse rotation, the forward rotation terminal X1 of the frequency converter is electrically connected with one end of the forward rotation relay coil F405aK1 normally open contact, the other end of the forward rotation relay coil F405aK1 normally open contact is electrically connected with the common end CM of the frequency converter, the forward rotation terminal X2 of the frequency converter is electrically connected with one end of the reverse rotation relay coil F405aK2 normally open contact, and the other end of the reverse rotation relay coil F405aK2 normally open contact is electrically connected with the common end CM of the frequency converter.

3. The improved circuit for controlling the forward and reverse rotation of the motor aS claimed in claim 2, wherein a normally closed contact of a reverse rotation relay coil F405aK2 is connected in series between the first output end of the third-gear knob F405aS2 and the forward rotation intermediate relay F405aK 1.

4. The improved circuit for controlling the forward and reverse rotation of the motor aS claimed in claim 3, wherein a normally closed contact of the forward rotation relay coil F405aK1 is connected in series between the second output end of the third-gear knob F405aS2 and the reverse rotation relay coil F405aK 2.