CN202679306U - Device for controlling motor using frequency converter and PLC - Google Patents
Device for controlling motor using frequency converter and PLC Download PDFInfo
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- CN202679306U CN202679306U CN2012202056489U CN201220205648U CN202679306U CN 202679306 U CN202679306 U CN 202679306U CN 2012202056489 U CN2012202056489 U CN 2012202056489U CN 201220205648 U CN201220205648 U CN 201220205648U CN 202679306 U CN202679306 U CN 202679306U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model provides a device for controlling a motor using a frequency converter and a PLC. The device comprises the frequency converter and an PLC controller connected with the frequency converter, wherein an input end of the frequency converter is connected with a first reactor, an input end of the first reactor is connected with an input of an electric grid by a switch, the PLC controller is respectively connected with a display 6, a keyboard input for setting rotation speed, and a temperature sensor on the motor, an output end of the frequency converter is connected with a second reactor, and an output end of the second reactor is connected with the motor. The device has the following advantages: two inductors are arranged on the circuit to perform the harmonic control on the input and output of the frequency converter to reduce the impact of the harmonic on the frequency converter, and when the motor is started, the impact on the instantaneous current of the motor is improved by the inductors. The PLC avoids the instantaneous current large impact, and alarms that the blockage is started and protects the blockage, controls the temperature of the motor exceeding the limit, and realizes the effective information transmission on the remote control and remote monitor aspect.
Description
Technical field
The utility model relates to a kind of motor control assembly, specifically a kind of device that adopts frequency converter and PLC control motor.
Background technology
Motor is the machine as the equipment major impetus, also be one of the equipment of the maximum of energy resource consumption, the target call that reduces discharging according to national energy-saving at present, on the highly energy-consuming motor, mostly adopt energy-conservation converter technique effectively to lower consumption more than 25%, also can reduce the fault of motor, the frequency converter of present various models is multiple, but judge in fault, the setting of motor speed, and going back Shortcomings in remote control and remote measurement, PLC is combined with frequency converter improving the energy-conservation of motor and functionally having a positive effect.What mostly adopt on Electric Machine Control at present is frequency converter and motor protector, but uses present technique also few.PLC and frequency converter use simultaneously as China and realize that intelligent grid has positive role.The most modes that adopt asynchronous motor directly to drive of equipment are moved, the shortcoming such as have that starting current is large, mechanical shock, electic protection characteristic are poor.Not only affect service life of equipment; and when load can not snap action protection equipment when there was a mechanical failure; often pump occurs and damage the phenomenon that the while motor is also burnt, can not effectively protect motor to damage, utilize the PLC soft and hardware can realize the detection of external fault, processing.PLC can also be with the control that also can set auto-speed to motor torque control and sequential control etc.This is that common frequency converter can not possess.
Summary of the invention
The purpose of this utility model be on the Frequency Converter Control of routine in harmonic wave control, torque can not be controlled and rotating speed can not be set and control sequence can not be set problem, a kind of device that adopts frequency converter and PLC control motor is provided, frequency converter uses has energy-saving benefit to motor, PLC can control motor speed, fault, operation etc., can also set the firing current of motor and can effectively reduce the electrical fault raising life-span.
The technical scheme that provides according to the utility model, the device of described employing frequency converter and PLC control motor, comprise interconnected frequency converter and PLC controller, the input of described frequency converter connects the first reactor, the input of the first reactor connects the electrical network input by switch, described PLC controller connects respectively display 6, carries out the keyboard input of speed setting, the temperature sensor on the motor, the output of described frequency converter connects the second reactor, and the output of the second reactor connects motor.
Described PLC controller also is set with PORT COM, arrives long-range host computer by network connection.
Described electrical network input three phase mains: L1 phase, L2 phase, L3 phase, wherein L1 phase and L3 mutually between two fuses of series connection and a voltmeter, switch (2) adopts a circuit breaker, and three phase mains L1 phase, L2 phase, L3 phase circuit connect the first reactor by circuit breaker.
The utility model has the advantages that: increase on the line 2 inductors and can carry out the control minimizing harmonic wave of harmonic wave to the impact of frequency converter to the frequency converter input and output, improve the quality of electrical network, when electric motor starting, the impact of motor transient current is played the effect of improvement by inductor.PLC can also effectively carry out photoelectricity isolation and filter function to input and output port, avoids transient high-current to impact; Stall is reported to the police and the protection of stall to starting; Motor temperature overstepped the extreme limit control; Realize effective information transmission in Long-distance Control and remote monitoring.
Description of drawings
Fig. 1 is integrated circuit block diagram of the present utility model.
Fig. 2 is converter circuit figure of the present utility model.
Fig. 3 is PLC circuit diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The utility model adopts the technology of frequency converter and PLC control combination, can not set the rotating speed that frequency converter exists, and torque can not be controlled and sequential control, and to the fault misjudgment etc., replenish by PLC.Also realize effectively transmitting in Long-distance Control and remote monitoring.Frequency converter uses has energy-saving benefit to motor, PLC can control motor speed, fault, operation etc., can also set the firing current of motor and can effectively reduce electrical fault and improve the life-span, adopt both in conjunction with carrying out remote control and remote measurement is conducive to realize intelligent management by communication network port.
As shown in Figure 1, the utility model comprises interconnected frequency converter 4 and PLC controller 5, it is characterized in that: the input of described frequency converter 4 connects the first reactor 3, the input of the first reactor 3 connects electrical network input 1 by switch 2, described PLC controller 5 connects respectively display 6, carries out the keyboard input 7 of speed setting, the temperature sensor 9 on the motor, the output that the output of described frequency converter 4 connects the second reactor 10, the second reactors 10 connects motor 11.Described PLC controller 5 also is set with PORT COM, arrives long-range host computer by network connection.
At first control power supply by electrical network input 1 to switch 2, then connect the first reactor 3 by switch 2 and can suppress surge voltage and surge current to the impact of frequency converter, increase the service life and prevent the interference of harmonic wave, PLC controller 5 shows at 6 pairs of various signals of connection display, motor is carried out speed setting be input to PLC controller 5, then PLC controller 5 connects the second reactor 10 through frequency converter 4 again, frequency converter 4 is to adopt the mode speed governing meeting generation high order harmonic component of frequency conversion and the wave distortion of generation, therefore the second reactor 10 is mainly to the high order harmonic component of frequency converter timing generation and the wave distortion of generation, play leaching harmonic voltage and harmonic current, improve power grid quality.Motor temperature is input on the PLC controller 5 by the temperature sensor 9 on the motor; overtemperature is controlled, exceeded design temperature and can cut off Switching Power Supply, motor is played the effect of protection; PLC controller 5 is also set PORT COM, can carry out long-range control by the network connection host computer.
As shown in Figure 2, the main circuit of Frequency Converter Control motor will comprise ACS600 frequency converter, motor M, and reactor L1 and L2 be corresponding the first reactor 3 and the second reactor 10 respectively.At first by electrical network input three phase mains L1, L2, L3 wherein L1 and L3 series connection two fuse FU1 and FU2 and be connected in series a voltmeter V circuit input voltage is detected.And L1, L2, L3 connection QF1 breaker control circuit input and output Power supply and control.Circuit breaker Q F1 outputs to reactor L1; reactor L1 mainly plays and suppresses surge voltage and surge current to the impact of frequency converter; then be input to the ACS600 frequency converter by reactor L1; then the ACS600 frequency converter outputs to reactor L2 by frequency conversion; reactor L2 mainly is high order harmonic component that the ACS600 frequency converter is produced in conversion process and the wave distortion of generation; play leaching harmonic voltage and harmonic current, protection motor device copper loss and iron loss and temperature rise effectively improve power grid quality.The X1 of frequency converter, X2, X3, X4 end is that the motor forward and backward is controlled, and changes by key switch S1 and auxiliary relay K2 and K4 contact.The fault that occurs in conversion can be controlled by emergency stop switch S4.The input of speed preset end X5 and X6 is to filter input converter by the rate signal that the PLC controller is set by signal isolator to have inverter converts to become output frequency again, rotating speed by output motor M behind the reactor L2 is controlled, speed feedback end X7 and X8 are that the situation feedback by motor speed is screened inputing to the PLC controller, when reaching the rotating speed of regulation, frequency converter can not reported to the police, when only occurring stall or rotating speed when not reaching regulation and requiring, frequency converter X11 and X12 end output failure alarm signal are to the PLC controller.Switch by relay contact cut-out motor after the PLC controller reception alarm signal plays the function that the protection motor for preventing burns.Frequency converter can in time be exported to the PLC controller with running status by X9 and X10 end when the motor normal operation.Given frequency end X13, X14, X15, X16 link together by adjustable resistance R, and frequency converter is undertaken given by adjustable resistance R when being in operation the data transaction of setting being become frequency variation signal.Frequency converter is obtained signal and is transferred to export behind the reactor L2 rotating speed of motor M is controlled.
Fig. 3 is the PLC control principle drawing, and each input/output port is described below.Behind the PLC input 220V power supply, the lantern festival display power supply signal in PLC.1L and 0.0 carries out after the energising allowing frequency converter to power on after the self check, then powered on to frequency converter by 0.1 relay tip, 0.2 and 0.3 is respectively to set motor forward and backward signal, has set motor starting time when electric motor starting, when electric motor starting was overtime, 2L can show that motor is overtime by lamp.And motor is lockable 0.6 contactor contact and is disconnected.Rotational speed setup signal 0.4 by input is exported to frequency converter and is carried out the frequency variation signal amount, and 0.7,1.0,3L is respectively that various alarm signals show, and 3L is arranged is the scram button signal.1.3 be electric motor starting display lamp signal, the 1.4th, the fan initiating signal that frequency converter is installed, 1.5 is respectively relay contact and running indicator signal.1.7 be the fan operation indication of frequency converter.N, L1 are respectively PLC power supply access points ,+,-be respectively that communication interface can externally carry out communication.Can adopt manually the motor trial run S.0 going up, S0.1 can move automatically to motor.S0.2 can carry out online start-up function.S0.3 PLC automatically resets, and S0.4 shows output signal, and S0.5 is the keyboard input.Can carry out speed setting.S1.0 and S1.1 are respectively operation and the failover that shows frequency converter.S1.4 and S1.5 overtemperture control and temperature show that S2.5, S2.6, S2.7 be the situation of three phase places of corresponding motor respectively.
The utility model is that a kind of frequency converter that adopts is combined the technology that motor is controlled with PLC, adopt rotating speed that PLC sets and demonstration and realize electric motor starting and speed change by the frequency conversion frequency, and can be shown the fault of motor and the fault of frequency converter, can also carry out temperature measurement and control to motor by temperature control sensor.The upper end that the utility model adopts two reactors to be installed in respectively frequency converter can be played input power and be suppressed surge voltage and surge current to the impact of frequency converter; the lower end can produce to the frequency conversion that frequency converter produces the wave distortion of high order harmonic component and generation; play and leach harmonic voltage and harmonic current; protection motor device copper loss and iron loss and temperature rise effectively improve power grid quality.PLC can also carry out communication to signal, connects host computer and carries out communication.Motor to fault carries out electric pinning, in addition the motor three-phase power phase anomaly is detected the fault that prevents the circuit inter-burnout-ing motor.The utility model can also be undertaken by the signal that control button provides manually and automatic operation carries out the safe operation that test-run a machine is guaranteed motor.
Claims (3)
1. adopt the device of frequency converter and PLC control motor, comprise interconnected frequency converter (4) and PLC controller (5), it is characterized in that: the input of described frequency converter (4) connects the first reactor (3), the input of the first reactor (3) connects electrical network input (1) by switch (2), described PLC controller (5) connects respectively display (6), carry out the keyboard input (7) of speed setting, temperature sensor on the motor (9), the output of described frequency converter (4) connects the second reactor (10), and the output of the second reactor (10) connects motor (11).
2. adopt as claimed in claim 1 the device of frequency converter and PLC control motor, it is characterized in that described PLC controller (5) also is set with PORT COM, arrive long-range host computer by network connection.
3. adopt as claimed in claim 1 the device of frequency converter and PLC control motor, it is characterized in that, described electrical network input (1) three phase mains: L1 phase, L2 phase, L3 phase, wherein L1 phase and L3 mutually between two fuses of series connection and a voltmeter, switch (2) adopts a circuit breaker, and three phase mains L1 phase, L2 phase, L3 phase circuit connect the first reactor (3) by circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202056489U CN202679306U (en) | 2012-05-09 | 2012-05-09 | Device for controlling motor using frequency converter and PLC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202056489U CN202679306U (en) | 2012-05-09 | 2012-05-09 | Device for controlling motor using frequency converter and PLC |
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| Publication Number | Publication Date |
|---|---|
| CN202679306U true CN202679306U (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202056489U Expired - Lifetime CN202679306U (en) | 2012-05-09 | 2012-05-09 | Device for controlling motor using frequency converter and PLC |
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| CN (1) | CN202679306U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967390A (en) * | 2015-05-29 | 2015-10-07 | 山西际安电气有限公司 | Mining frequency converter peripheral control system |
| CN104967088A (en) * | 2015-05-29 | 2015-10-07 | 山西际安电气有限公司 | Mining frequency converter protection system |
| CN106155130A (en) * | 2016-08-28 | 2016-11-23 | 桂林市晶准测控技术有限公司 | A kind of electric equipment intelligent temperature control system based on DDC |
| CN108879687A (en) * | 2018-08-14 | 2018-11-23 | 沈阳创联工业技术有限公司 | The filtering system of the can-type calcine furnace of temperature can be automatically adjusted |
| CN110212492A (en) * | 2019-06-20 | 2019-09-06 | 广东电网有限责任公司 | A kind of motor operation mechanism |
| WO2020069584A1 (en) * | 2018-10-04 | 2020-04-09 | Weg Drives & Controls - Automação Ltda. | Auxiliary module assembly for a starter assembly for electric motors |
| CN112928734A (en) * | 2021-01-12 | 2021-06-08 | 中国石油天然气股份有限公司 | Motor temperature protection control system and method for high-pressure water injection pump |
-
2012
- 2012-05-09 CN CN2012202056489U patent/CN202679306U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967390A (en) * | 2015-05-29 | 2015-10-07 | 山西际安电气有限公司 | Mining frequency converter peripheral control system |
| CN104967088A (en) * | 2015-05-29 | 2015-10-07 | 山西际安电气有限公司 | Mining frequency converter protection system |
| CN104967088B (en) * | 2015-05-29 | 2018-08-31 | 山西际安电气有限公司 | The protection system of mine-used frequency-converter |
| CN106155130A (en) * | 2016-08-28 | 2016-11-23 | 桂林市晶准测控技术有限公司 | A kind of electric equipment intelligent temperature control system based on DDC |
| CN108879687A (en) * | 2018-08-14 | 2018-11-23 | 沈阳创联工业技术有限公司 | The filtering system of the can-type calcine furnace of temperature can be automatically adjusted |
| WO2020069584A1 (en) * | 2018-10-04 | 2020-04-09 | Weg Drives & Controls - Automação Ltda. | Auxiliary module assembly for a starter assembly for electric motors |
| CN110212492A (en) * | 2019-06-20 | 2019-09-06 | 广东电网有限责任公司 | A kind of motor operation mechanism |
| CN112928734A (en) * | 2021-01-12 | 2021-06-08 | 中国石油天然气股份有限公司 | Motor temperature protection control system and method for high-pressure water injection pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |