CN202663088U - Phase sequence recognition control device of electromotor - Google Patents
Phase sequence recognition control device of electromotor Download PDFInfo
- Publication number
- CN202663088U CN202663088U CN 201220372681 CN201220372681U CN202663088U CN 202663088 U CN202663088 U CN 202663088U CN 201220372681 CN201220372681 CN 201220372681 CN 201220372681 U CN201220372681 U CN 201220372681U CN 202663088 U CN202663088 U CN 202663088U
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- phase sequence
- circuit
- control device
- electromotor
- phase
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Abstract
The utility model relates to a phase sequence recognition control device of an electromotor. The phase sequence recognition control device of the electromotor comprises a phase sequence detection circuit and a singlechip control circuit, wherein an output signal of the phase sequence detection circuit is transmitted to the singlechip control circuit through a trigger circuit; an output signal of the singlechip control circuit is controlled and transmitted to an RS485 communication interface circuit and a driving circuit; when three phases of a power supply are in short of phases or the phase sequences are connected in fault, after the phase sequence recognition control device of the electromotor provided by the utility model is recognized by the singlechip, a control signal is transmitted; meanwhile, the control signal is transmitted to a PLC (programmable logic controller) control system through a system bus, and the remote on-line monitoring is realized; and the phase sequence recognition control device of the electromotor provided by the utility model has the phase loss automatic protection function, besides, when the phase sequences of the three phases of power supplies of the electromotor are connected in fault, the loss of a driving pump, a compressor, a conveying belt and other equipment because of reverse of the electromotor is prevented effectively.
Description
Technical field
The utility model relates to a kind of control device, particularly be a kind of motor phase sequence identification control device.
Background technology
The equipment such as driving pump, compressor, conveyer belt all need be used motor, but when the phase sequence wrong of motor three characteristics of the middle term power supply, and motor will reverse and the loss that causes.
The utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of motor phase sequence identification control device is provided.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of motor phase sequence identification control device, comprise circuit of testing the phase sequence and single chip machine controlling circuit, the output signal of described circuit of testing the phase sequence transfers to single chip machine controlling circuit through circuits for triggering, and the output signal control of described single chip machine controlling circuit is sent to RS485 communication interface circuit and drive circuit.
Preferably, described circuit of testing the phase sequence is connected respectively to successively diode VD1-VD3, resistor R1-R6, voltage stabilizing didoe VD4-VD6 and resistance R 4-R6 by the output of three phase mains and consists of.
Preferably, described circuits for triggering adopt CD4011 four NAND gate integrated circuit (IC) to consist of.
Preferably, described RS485 communication interface circuit is connected to the PLC control system by SN75176 communication interface chip IC2.
By adopting above-mentioned technical scheme, the beneficial effects of the utility model are: when open phases of three-phase power source or phase sequence wrong, the utility model sends control signal after identifying by single-chip microcomputer, reach the PLC control system by system bus simultaneously, realize remote online monitoring; The utility model also can be when the phase sequence wrong of motor three phase mains except having the open-phase automatic protection function, the loss of effectively avoiding the equipment such as driving pump, compressor, conveyer belt to cause because of the motor reversing.
Description of drawings
Fig. 1 is frame assumption diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of motor phase sequence identification control device of the present utility model, comprise circuit of testing the phase sequence 1 and single chip machine controlling circuit 2, the output signal of described circuit of testing the phase sequence 1 transfers to single chip machine controlling circuit 2 through circuits for triggering 11, and the output signal control of described single chip machine controlling circuit 2 is sent to RS485 communication interface circuit 21 and drive circuit 22.
Described circuit of testing the phase sequence 1 is connected respectively to successively diode VD1-VD3, resistor R1-R6, voltage stabilizing didoe VD4-VD6 and resistance R 4-R6 by the output of three phase mains and consists of, and described circuits for triggering 11 adopt CD4011 four NAND gate integrated circuit (IC) to consist of.
The voltage that L1-L3 holds mutually by phase sequence detection line trigger, is connected to the I/O end of single-chip microcomputer IC1 after diode VD1～VD3 rectification, resistor R1-R3 current limliting, voltage stabilizing didoe VD4-VD6 voltage stabilizing and resistance R 4-R6 amplitude limiting processing.
When the three-phase alternating-current supply phase sequence correctly, also intact phase time, not circuit D4 output low level, the 36th pin I/O end that is input to single-chip microcomputer IC1 through resistance R 7 current limlitings also is low level state, after single-chip microcomputer IC1 internal processes processor is judged, the 27th pin output high level of single-chip microcomputer IC1 through resistance R 8 current limlitings, makes transistor Q1 conducting, contactor K adhesive promotes motor and runs well.
In case the phase sequence wrong of three-phase alternating-current supply or when phase shortage occurring, then not circuit D4 exports high level, the 36th pin I/O end that is input to single-chip microcomputer IC1 through resistance R 7 current limlitings also is high level state, after single-chip microcomputer IC1 internal processes processor is judged, the 27th pin output low level of single-chip microcomputer IC1 through resistance R 8 current limlitings, makes transistor Q1 cut-off, contactor K discharges, and cuts off motor power; Another road output connects to form RS485 communication interface circuit 21 by the 1st, 2,3,4 ends of SN75176 communication interface chip IC2 and the 10th, 11,25 ends of single-chip microcomputer IC1, send data-signal by single-chip microcomputer IC1 to SN75176 communication interface chip IC2, change backward PLC control system data information through SN75176 communication interface chip IC2, show current state by PLC, realize remote online monitoring.
Above-described only is a preferred embodiment of the present utility model, can not limit the scope that the utility model is implemented, and every equalization of doing according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.
Claims (4)
1. motor phase sequence identification control device, it is characterized in that: comprise circuit of testing the phase sequence (1) and single chip machine controlling circuit (2), the output signal of described circuit of testing the phase sequence (1) transfers to single chip machine controlling circuit (2) through circuits for triggering (11), and the output signal control of described single chip machine controlling circuit (2) is sent to RS485 communication interface circuit (21) and drive circuit (22).
2. motor phase sequence identification control device according to claim 1 is characterized in that: described circuit of testing the phase sequence (1) is connected respectively to successively diode VD1-VD3, resistor R1-R6, voltage stabilizing didoe VD4-VD6 and resistance R 4-R6 by the output of three phase mains and consists of.
3. motor phase sequence identification control device according to claim 1 and 2 is characterized in that: described circuits for triggering (11) employing CD4011 four NAND gate integrated circuit (IC) formation.
4. motor phase sequence identification control device according to claim 1, it is characterized in that: described RS485 communication interface circuit (21) is connected to the PLC control system by SN75176 communication interface chip IC2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220372681 CN202663088U (en) | 2012-07-31 | 2012-07-31 | Phase sequence recognition control device of electromotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220372681 CN202663088U (en) | 2012-07-31 | 2012-07-31 | Phase sequence recognition control device of electromotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202663088U true CN202663088U (en) | 2013-01-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220372681 Expired - Fee Related CN202663088U (en) | 2012-07-31 | 2012-07-31 | Phase sequence recognition control device of electromotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202663088U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743962A (en) * | 2013-11-21 | 2014-04-23 | 成都市宏山科技有限公司 | Reversing status monitoring circuit for transmission belt motor |
| CN107294065A (en) * | 2017-08-22 | 2017-10-24 | 合肥天鹅制冷科技有限公司 | Compressor phase shortage fast tripping protection device |
-
2012
- 2012-07-31 CN CN 201220372681 patent/CN202663088U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743962A (en) * | 2013-11-21 | 2014-04-23 | 成都市宏山科技有限公司 | Reversing status monitoring circuit for transmission belt motor |
| CN107294065A (en) * | 2017-08-22 | 2017-10-24 | 合肥天鹅制冷科技有限公司 | Compressor phase shortage fast tripping protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20130731 |