CN102088262B - Remote control device of explosion proof motor - Google Patents

Remote control device of explosion proof motor Download PDF

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Publication number
CN102088262B
CN102088262B CN 201010579525 CN201010579525A CN102088262B CN 102088262 B CN102088262 B CN 102088262B CN 201010579525 CN201010579525 CN 201010579525 CN 201010579525 A CN201010579525 A CN 201010579525A CN 102088262 B CN102088262 B CN 102088262B
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circuit
motor
cmp
cable
utmost point
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CN102088262A (en
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孟润泉
杨毅
陈娟
张星荣
崔文强
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Taiyuan University of Technology
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Taiyuan University of Technology
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Abstract

The invention relates to a remote control device of an explosion proof motor, which mainly comprises an electric cabinet, a controller, a motor, a vacuum control gate, a power transformer, a power source, a circuit board, a display screen, an indicator light, a wiring board, a conducting wire and a cable. A dual-configuration photoelectric coupled circuit, a voltage comparison circuit and associated matching circuits are adopted so as to be capable of accurately and automatically identifying remote cable circuit and short-circuit failures and sending a signal and converting the signal into the on or off state of a photoelectric coupler, thus the anti-interference performance is enhanced and the defect of potential safety hazard in the control of circuits in a two-wire system is overcome. The remote control device has the advantages of advanced and reasonable design, compact structure, safety, stability, reliability, convenience for use and remote control within the range of 600m, and is an ideal remote control device of the explosion proof motor.

Description

A kind of remote control of fire-proof motor
Technical field
The present invention relates to a kind of remote control of fire-proof motor, the technical field of electric equipment and explosion-proof control under the genus coal mine.
Background technology
Under coal mine, using multiple motor, be in the intensive environment of damp or dust, the safe starting of motor with stopped into a great problem.
At present; The remote starter of fire-proof motor is often realized through the size of discerning analog signal with stopping on the control circuit under the coal mine, and the start-stop of motor and the signal magnitude degree of association in the remote link are high, when resistance change or power-supply fluctuation are big in remote loop; Signal magnitude in the remote loop can change thereupon; Thereby be prone to produce wrong start-stop output, make the reliability of existing remote circuit and anti-interference be affected, and have potential safety hazard.
In addition, existing three-wire system circuit exists electric control cable short circuit mistake far away to start hidden danger, starts shortcoming though existing two-wire system motor control circuit far away has overcome the cable short circuit mistake, the contactor state of drive motors is not introduced as feedback signal; Make this kind circuit in control, have potential safety hazard, for example, when pressing the far-end starting button; Contactor fails to close a floodgate, and because of two-wire system control circuit self-sustaining far away, still has initiating signal outwards to export; After the factor disappearance that contactor can not close a floodgate, even do not press the far-end starting button, motor also can start; Can cause potential safety hazard, prior art does not have the failure operation indication, very easily breaks down.
Summary of the invention
Goal of the invention
The object of the invention is exactly to disadvantages of background technology; A kind of remote control of highly reliable fire-proof motor is provided; Anti-interference to exist in the start-stop that solves Long-distance Control fire-proof motor under the coal mine is poor, interference misses start-stop, cable short circuit mistake starting problem; So that the start-stop of motor is interference-free, start-stop accurately, correctly improves the reliability of equipment operation and Field Force's fail safe.
Technical scheme
Primary structure of the present invention comprises: electric cabinet, controller, motor, vacuum control lock, power transformer, power supply, circuit board, display screen, indicator light, terminal block, lead, cable;
Electric cabinet 1 is rectangular box-like, and electric cabinet 1 left part is a terminal block 4,5, and right part is a terminal block 13, and top is indicator light 2, display screen 3; Electric cabinet 1 left part connects vacuum control lock 8 through terminal block 4, cable 11; Electric cabinet 1 connects controller 10 through terminal block 5, cable 11; Electric cabinet 1 is through terminal block 13, cable 11 joining power transformers 6, and power transformer 6 connects vacuum control lock 8 through cable 11; Vacuum control lock 8 is through cable 11 joining power transformers 6, and power transformer 6 is through cable 11 joining powers 7; Electric cabinet 1 connects vacuum control lock 8 through terminal block 13, cable 11; Vacuum control lock 8 is through cable connection motor 9;
Circuit board 12 in the electric cabinet 1 is by intrinsic safety signal power source IC circuit 2, forward photoelectricity coupling circuit IC 3, negative sense photoelectricity coupling circuit IC 4, forward photoelectricity coupling circuit IC 5, negative sense photoelectricity coupling circuit IC 6, DC power supply circuit IC 7, voltage comparator circuit IC 8, relay drive circuit IC 9Form integrated circuit, connect by lead, terminal between each parallel circuit;
Circuit for remotely controlling IC 1, promptly controller 10, by button B 1, B 2, diode D 1, D 2Form control circuit;
Intrinsic safety signal source circuit IC 2, by intrinsic safety transformer TR 1The input winding connects fuse F 1, output winding connection electrical resistance R 1, two terminals of input side are joining power transformer TR respectively 2Output winding two ends;
Forward photoelectricity coupling circuit IC 3, LED 1The P utmost point connect photoelectrical coupler OE 1Lower end, a left side, OE 1Upper right quarter connection electrical resistance R 3One end, R 3The other end connects capacitor C 1+ the utmost point and resistance R 2One end, capacitor C 1-utmost point joining power negative pole VSS, R 2The other end connects dc power anode VCC, resistance R 5With capacitor C 1Parallel connection, C 1+ the utmost point connects voltage comparator circuit IC again 8Resistance R 4One end;
Negative sense photoelectricity coupling circuit IC 4, LED 2The P utmost point connect photoelectrical coupler OE 2Lower end, a left side, OE 2Upper right quarter connection electrical resistance R 7One end, R 7The other end connects capacitor C 2+ the utmost point and resistance R 6One end, capacitor C 2-the utmost point passes through resistance R 9Joining power negative pole VSS, R 6The other end connects dc power anode VCC, C 2+ the utmost point connects voltage comparator circuit IC again 8Resistance R 8One end;
Forward photoelectricity coupling circuit IC 5, LED 3The P utmost point connect photoelectrical coupler OE 3Lower end, a left side, OE 3Upper right quarter connection electrical resistance R 11One end, R 11The other end connects capacitor C 3+ the utmost point and resistance R 10One end, capacitor C 3-utmost point joining power negative pole VSS, R 10The other end connects dc power anode VCC, resistance R 13With capacitor C 3Parallel connection; C 3+ the utmost point connects voltage comparator circuit IC again 8Resistance R 12One end;
Negative sense photoelectricity coupling circuit IC 6, LED 4The P utmost point connect photoelectrical coupler OE 4Lower end, a left side, OE 4Upper right quarter connection electrical resistance R 15One end, R 15The other end connects capacitor C 4+ the utmost point and resistance R 14One end, capacitor C 4-the utmost point passes through resistance R 17Joining power negative pole VSS, R 14The other end connects dc power anode VCC, C 4+ the utmost point connects voltage comparator circuit IC again 8Resistance R 16One end;
Forward photoelectricity coupling circuit IC 3LED 1The N utmost point connects negative sense photoelectricity coupling circuit IC 4Middle OE 2Left upper end connects electric control cable L far away simultaneously 2With diode D 3The N utmost point, D 3The P utmost point connect contactor auxiliary contact J KMOne end, J KMThe other end connects intrinsic safety signal source circuit IC 2One output; Forward photoelectricity coupling circuit IC 5Middle OE 3Left upper end and IC 6Middle LED 4The N utmost point connect, connect electric control cable L far away simultaneously 3IC 3Middle OE 1Left upper end, IC 4Middle LED 2The N utmost point, IC 5Middle LED 3The N utmost point, IC 6Middle OE 4Left upper end links to each other and connects intrinsic safety signal source circuit IC 2Another output;
DC power supply circuit IC 7, Switching Power Supply AC/DC one input is through fuse F 2Be connected to power transformer TR 2One output, another input directly connects TR 2Another output; Output head anode VCC, negative pole VSS;
Voltage comparator circuit IC 8, by comparator C MP 1, CMP 2Input connection electrical resistance R 4, R 8, R 12, R 16, output connects after resistance R 18The anodal VCC of joining power connects relay drive circuit IC simultaneously 9Resistance R 19, comparator adopts integrated chip LM393;
Relay drive circuit IC 9, diode D 4Parallelly connected with relay R L line bag, diode D 4The anodal VCC of N utmost point joining power, diode D 4The P utmost point connect triode T 1Collector electrode, T 1Emitter joining power negative pole VSS, triode T 1Base stage is through resistance R 19Connect voltage comparator circuit IC 8Relay R L contact J RLTwo ends connect vacuum contactor KM line bag and power transformer TR respectively 2One end of output winding;
Vacuum control lock 8 is by vacuum contactor KM closing line Bao Yiduan joining power transformer TR 2One end of output winding, vacuum contactor KM three-phase main contact one side connect three phase windings of three-phase electrical source of power, opposite side connection alternating current motor M;
The TR of power transformer 6 2Input winding two ends respectively through fuse F 3, F 4And be connected to any two phases of three-phase electrical source of power behind the isolating switch QS.
Inventive principle:
The intrinsic safety performance realizes principle: utilize intrinsic safety transformer TR 1Electrical isolation and magnetic coupling interaction, photoelectrical coupler OE 1～OE 4Electrical isolation and optical coupling effect, realize the electrical isolation of intrinsically safe circuit and non-intrinsically safe circuit, utilize resistance R 1Metering function realize intrinsic safety signal circuit output energy limited;
Signal transmission and Fault Identification principle: utilize in the controller in the diode and electric cabinet the unilateral conduction of photoelectrical coupler input side diode to transmit start-stop signal and discern electric control cable fault far away, when AC signal from IC 2Set out respectively through D 1, D 2Arrive photoelectricity coupling circuit IC 3～IC 6, have only OE 2, OE 4On off operating mode changes, and normal start-stop signal is able to transmission; When cable short circuit, from IC 2The AC signal that sends is without D 1, D 2Just arrive IC 3～IC 6, make OE 1, OE 3On off operating mode also changes, and can judge the cable short circuit fault; The different on off operating modes of photoelectrical coupler change voltage comparator circuit IC 8Incoming level is through IC 8Send into IC relatively 9Control relay RL break-make, again by RL control vacuum contactor KM, and then the start-stop of control motor M;
During normal standby, B 2Closure is with D 2The OE that conducting direction is consistent 4Conducting is with D 2Reverse OE 3End, make V2-＜V2+, thus CMP 2Output logic is 1, but starting button B 1Break off OE 1, OE 2All end, V1-＞V1+ makes CMP 1Output logic is 0, because of CMP 1, CMP 2Output is the logical AND relation, so final output logic is 0, makes triode T 1End, relay R L is not charged; Press starting button B 1After, with D 1The OE that conducting direction is consistent 2Conducting, OE 1Remain off, CMP 1Incoming level becomes V1-＜V1+, CMP 1Output becomes logical one, makes final output logic 1, triode T 1Saturation conduction, relay R L is charged, J RLAdhesive, KM adhesive, motor M starting, KM auxiliary contact J simultaneously KMClosure makes OE 2Keep conducting, make motor M keep operation; When pressing stop button B 2Make it to break off OE 3, OE 4All end, V2-＞V2+ makes CMP 2Output logic is 0, T 1End, relay R L dead electricity is broken off, and the KM dead electricity is broken off, the motor M stall;
As cable L 1, L 2Short circuit is with D 1Short circuit is fallen, OE 1, OE 2Conducting simultaneously makes V1-＞V1+, CMP 1Output logic is 0, locking relay RL; Work as D 2By cable L 1, L 3During short circuit, OE 3, OE 4Conducting simultaneously makes V2-＞V2+, CMP 2Output logic 0, locking relay RL; L 2, L 3Short circuit makes OE 1Conducting makes V1-＞V1+, CMP 1Output logic is 0, locking relay RL; Electric control cable L far away 3Open circuit with press stop button B 2Equivalence; Cable L under the holding state 2Button B during open circuit 1Inoperative, guarantee not starting by mistake; Cable L under the running status 2Open circuit does not influence running status, and can pass through stop button B 2Shut down; Cable L under the holding state 1Open circuit makes OE 1～OE 4All end CMP 1, CMP 2Output logic is 0, locking relay RL; L under the running status 1Open circuit makes OE 4End V2-＞V2+, CMP 2Output logic is 0, locking relay RL, motor M stall.
Beneficial effect
The present invention compares with background technology has tangible advance, is poor to colliery downhole electrical motor Long-distance Control anti-interference, the easy design that electric control cable short circuit mistake far away starting takes place and carry out; This device adopts essential safe type signal transmission control circuit, and the forward and reverse photoelectricity coupling circuit of the two configurations of employing, voltage comparator circuit and relevant support circuits can accurately be discerned remote cable open circuit and short trouble automatically; Instant indicating circuit operating state, and be converted into the conducting or the cut-off state of photoelectrical coupler, strengthened interference free performance; Overcome the potential safety hazard of two-wire system remote circuit in control, this device advanced and reasonable design, compact conformation; Safety and stability is reliable; Easy to use, Long-distance Control can be used within 600m, is the remote control of very good fire-proof motor.
Description of drawings
Fig. 1 is fire-proof motor remote control overall structure figure
Fig. 2 is the electric cabinet structure chart
Fig. 3 is the A-A profile of Fig. 2
Fig. 4 is the electric cabinet circuit diagram
Shown in the figure, list of numerals is following:
1, electric cabinet, 2, indicator light, 3, display screen, 4, terminal block, 5, terminal block, 6, power transformer, 7, power supply, 8, the vacuum control lock, 9, motor, 10, controller, 11, cable, 12, circuit board, 13, terminal block.
IC 1, circuit for remotely controlling, IC 2, the intrinsic safety signal source circuit, IC 3, forward photoelectricity coupling circuit, IC 4, negative sense photoelectricity coupling circuit, IC 5, forward photoelectricity coupling circuit, IC 6, negative sense photoelectricity coupling circuit, IC 7, power circuit, IC 8, voltage comparator circuit, IC 9, relay drive circuit.
TR 2, power transformer, KM, vacuum contactor, J KM, the vacuum contactor auxiliary contact, L, electric control cable far away, AC/DC, D.C. regulated power supply, TR 1, the intrinsic safety transformer, R, resistance, C, electric capacity, D, diode, B, button, F, fuse, M, motor, OE, photoelectrical coupler, V, level, VCC, positive electrode, VSS, negative electrode, CMP, comparator, RL, relay, T, triode.
Embodiment
Below in conjunction with accompanying drawing the present invention is further specified:
Shown in Figure 1, be control device overall structure figure, each location, connecting relation want correct.
Be the main body with electric cabinet 1, connect controller 10, power transformer 6, power supply 7, vacuum control lock 8, motor 9 respectively through cable 11.
Fig. 2, shown in 3, be the electric cabinet structure chart, explosion-proof design wanted waterproof, insulate and carries out by electric cabinet 1, and the case interior circuit board is whole control circuit, and each parts, each device connecting relation want correct.
Shown in Figure 4, electric cabinet board circuit figure forms integrated circuit by 9 parallel circuits, and is combined as a whole by lead.
Embodiment 1
Fire-proof motor remote control method for using is following:
1, each one of control device all is in quasi-operating status;
2, opening controller switch, indicator light LED 4Bright;
3, press starting button B 1, indicator light LED 2Bright, vacuum contactor KM adhesive, motor M gets electric operation;
4, decontrol starting button B 1, by J KMClosure makes vacuum contactor KM keep adhesive, and motor M keeps operation, indicator light LED 2Keep bright;
5, press stop button B 2, indicator light LED 4Go out, vacuum contactor KM breaks off, and the motor M dead electricity is shut down, LED 2Extinguish thereupon;
6, decontrol stop button B 2, indicator light LED 4Bright, wait for wheel operation down;
If cable L 1, L 3Short circuit, indicator light LED 3, LED 4Simultaneously bright, holding state is pressed starting button B 1Motor is inoperative, and the outage of running status motor is shut down; If cable L 1, L 2Short circuit, indicator light LED 1, LED 2Simultaneously bright, holding state is pressed starting button B 1Motor is inoperative, and the outage of running status motor is shut down; If cable L 2, L 3Short circuit, indicator light LED 1Bright, holding state is pressed starting button B 1Motor is inoperative, and the outage of running status motor is shut down; If cable L 1, L 2, L 3Short circuit, indicator light LED 1, LED 2, LED 3, LED 4Simultaneously bright, holding state is pressed starting button B 1Motor is inoperative, and the outage of running status motor is shut down;
Cable L 1Open circuit, indicator light LED 1, LED 2, LED 3, LED 4Go out simultaneously, holding state is pressed starting button B 1Motor is inoperative, and the outage of running status motor is shut down; Cable L 2Open circuit, holding state is pressed B 1Motor is inoperative, and running status can keep motor rotation and can be through pressing B 2Outage is shut down; Cable L 3Open circuit, LED 4Go out, holding state is pressed B 1Motor is inoperative, and the running status outage is shut down;
Through above operation sequence, accomplished the Long-distance Control of fire-proof motor.

Claims (3)

1. the remote control of a fire-proof motor, it is characterized in that: primary structure comprises: electric cabinet, controller, motor, vacuum control lock, power transformer, power supply, circuit board, display screen, indicator light, terminal block, lead, cable;
Electric cabinet (1) is rectangular box-like, and electric cabinet (1) left part is first terminal block (4), second terminal block (5), and right part is the 3rd terminal block (13), and top is indicator light (2), display screen (3); Electric cabinet (1) left part connects vacuum control lock (8) through first terminal block (4), cable (11); Electric cabinet (1) connects controller (10) through second terminal block (5), cable (11); Electric cabinet (1) is through the 3rd terminal block (13), cable (11) joining power transformer (6) and vacuum control lock (8); Power transformer (6) is through cable (11) joining power (7); Vacuum control lock (8) is through cable connection motor (9);
Circuit board (12) in the electric cabinet (1) is by intrinsic safety signal power source IC circuit 2, forward photoelectricity coupling circuit IC 3, negative sense photoelectricity coupling circuit IC 4, forward photoelectricity coupling circuit IC 5, negative sense photoelectricity coupling circuit IC 6, DC power supply circuit IC 7, voltage comparator circuit IC 8, relay drive circuit IC 9Form integrated circuit, connect by lead, terminal between each parallel circuit;
Circuit for remotely controlling IC 1, i.e. controller (10) is by button B 1, B 2, diode D 1, D 2Form control circuit;
Intrinsic safety signal source circuit IC 2, by intrinsic safety transformer TR 1The input winding connects fuse F 1, output winding connection electrical resistance R 1Form intrinsic safety signal source circuit IC 2Two terminals of input side are joining power transformer TR respectively 2Output winding two ends;
Forward photoelectricity coupling circuit IC 3, LED 1The P utmost point connect photoelectrical coupler OE 1Lower end, a left side, OE 1Upper right quarter connection electrical resistance R 3One end, R 3The other end connects capacitor C 1+ the utmost point and resistance R 2One end, capacitor C 1-utmost point joining power negative pole VSS, R 2The anodal VCC of other end joining power, resistance R 5With capacitor C 1Parallel connection, C 1+ the utmost point connects voltage comparator circuit IC again 8Resistance R 4One end;
Negative sense photoelectricity coupling circuit IC 4, LED 2The P utmost point connect photoelectrical coupler OE 2Lower end, a left side, OE 2Upper right quarter connection electrical resistance R 7One end, R 7The other end connects capacitor C 2+ the utmost point and resistance R 6One end, capacitor C 2-the utmost point passes through resistance R 9Joining power negative pole VSS, R 6The anodal VCC of other end joining power, C 2+ the utmost point connects voltage comparator circuit IC again 8Resistance R 8One end;
Forward photoelectricity coupling circuit IC 5, LED 3The P utmost point connect photoelectrical coupler OE 3Lower end, a left side, OE 3Upper right quarter connection electrical resistance R 11One end, R 11The other end connects capacitor C 3+ the utmost point and resistance R 10One end, capacitor C 3-utmost point joining power negative pole VSS, R 10The anodal VCC of other end joining power, resistance R 13With capacitor C 3Parallel connection; C 3+ the utmost point connects voltage comparator circuit IC again 8Resistance R 12One end;
Negative sense photoelectricity coupling circuit IC 6, LED 4The P utmost point connect photoelectrical coupler OE 4Lower end, a left side, OE 4Upper right quarter connection electrical resistance R 15One end, R 15The other end connects capacitor C 4+ the utmost point and resistance R 14One end, capacitor C 4-the utmost point passes through resistance R 17Joining power negative pole VSS, R 14The anodal VCC of other end joining power, C 4+ the utmost point connects voltage comparator circuit IC again 8Resistance R 16One end;
Forward photoelectricity coupling circuit IC 3LED 1The N utmost point connects negative sense photoelectricity coupling circuit IC 4Middle OE 2Left upper end connects electric control cable L far away simultaneously 2With diode D 3The N utmost point, D 3The P utmost point connect contactor auxiliary contact J KMOne end, J KMThe other end connects intrinsic safety signal source circuit IC 2One output; Forward photoelectricity coupling circuit IC 5Middle OE 3Left upper end and IC 6Middle LED 4The N utmost point connect, connect electric control cable L far away simultaneously 3IC 3Middle OE 1Left upper end, IC 4Middle LED 2The N utmost point, IC 5Middle LED 3The N utmost point, IC 6Middle OE 4Left upper end links to each other and connects intrinsic safety signal source circuit IC 2Another output;
Switching Power Supply AC/DC one input is through fuse F 2Be connected to power transformer TR 2One output, another input directly connects TR 2Another output; The anodal VCC of Switching Power Supply AC/DC output out-put supply, negative pole VSS;
Voltage comparator circuit IC 8, by comparator C MP 1, CMP 2Input connection electrical resistance R 4, R 8, R 12, R 16, output connects after resistance R 18The anodal VCC of joining power connects relay drive circuit IC simultaneously 9Resistance R 19, comparator adopts integrated chip LM393;
Relay drive circuit IC 9, diode D 4Parallelly connected with relay R L line bag, diode D 4The anodal VCC of N utmost point joining power, diode D 4The P utmost point connect triode T 1Collector electrode, T 1Emitter joining power negative pole VSS, triode T 1Base stage is through resistance R 19Connect voltage comparator circuit IC 8Relay R L contact J RLTwo ends connect vacuum contactor KM line bag and power transformer TR respectively 2One end of output winding;
Vacuum control lock (8) is by vacuum contactor KM closing line Bao Yiduan joining power transformer TR 2One end of output winding, vacuum contactor KM three-phase main contact one side connect three phase windings of three-phase electrical source of power, opposite side connection alternating current motor M;
The TR of power transformer (6) 2Input winding two ends respectively through fuse F 3, F 4And be connected to any two phases of three-phase electrical source of power behind the isolating switch QS.
2. the remote control of a kind of fire-proof motor according to claim 1, it is characterized in that: its inventive principle is:
The intrinsic safety performance realizes principle: utilize intrinsic safety transformer TR 1Electrical isolation and magnetic coupling interaction, photoelectrical coupler OE 1～OE 4Electrical isolation and optical coupling effect, realize the electrical isolation of intrinsically safe circuit and non-intrinsically safe circuit, utilize resistance R 1Metering function realize intrinsic safety signal circuit output energy limited;
Signal transmission and Fault Identification principle: utilize IC 1In in diode and the electric cabinet (1) the unilateral conduction transmission start-stop signal of photoelectrical coupler input side diode also discern electric control cable fault far away, when AC signal from IC 2Set out respectively through D 1, D 2Arrive photoelectricity coupling circuit IC 3～IC 6, have only OE 2, OE 4On off operating mode changes, and normal start-stop signal is able to transmission; When cable short circuit, from IC 2The AC signal that sends is without D 1, D 2Just arrive IC 3～IC 6, make OE 1, OE 3On off operating mode also changes, and can judge the cable short circuit fault; The different on off operating modes of photoelectrical coupler change voltage comparator circuit IC 8Incoming level is through IC 8Send into IC relatively 9Control relay RL break-make, again by RL control vacuum contactor KM, and then the start-stop of control motor M;
During normal standby, button B 2Closure is with D 2The OE that conducting direction is consistent 4Conducting is with D 2Reverse OE 3End, make CMP 2Inverting input level V2-＜CMP 2In-phase input end level V2+, thereby CMP 2Output logic is 1, but button B 1Break off OE 1, OE 2All end CMP 1Inverting input level V1-＞CMP 1In-phase input end level V1+ makes CMP 1Output logic is 0, because of CMP 1, CMP 2Output is the logical AND relation, so final output logic is 0, makes triode T 1End, relay R L is not charged; Press the button B 1After, with D 1The OE that conducting direction is consistent 2Conducting, OE 1Remain off, CMP 1Inverting input level V1-＜CMP 1In-phase input end level V1+, CMP 1Output becomes logical one, makes final output logic 1, triode T 1Saturation conduction, relay R L is charged, J RLAdhesive, KM adhesive, motor M starting, KM auxiliary contact J simultaneously KMClosure makes OE 2Keep conducting, make motor M keep operation; When pressing the button B 2Make it to break off OE 3, OE 4All end CMP 2Inverting input level V2-＞CMP 2In-phase input end level V2+ makes CMP 2Output logic is 0, T 1End, relay R L dead electricity is broken off, and the KM dead electricity is broken off, the motor M stall;
As cable L 1, L 2Short circuit is with D 1Short circuit is fallen, OE 1, OE 2Conducting simultaneously makes CMP 1Inverting input level V1-＞CMP 1In-phase input end level V1+, CMP 1Output logic is 0, locking relay RL; Work as D 2By cable L 1, L 3During short circuit, OE 3, OE 4Conducting simultaneously makes CMP 2Inverting input level V2-＞CMP 2In-phase input end level V2+, CMP 2Output logic 0, locking relay RL; L 2, L 3Short circuit makes OE 1Conducting makes CMP 1Inverting input level V1-＞CMP 1In-phase input end level V1+, CMP 1Output logic is 0, locking relay RL; Electric control cable L far away 3Open circuit with press the button B 2Equivalence; Cable L under the holding state 2Button B during open circuit 1Inoperative, guarantee not starting by mistake; Cable L under the running status 2Open circuit does not influence running status, and can pass through button B 2Shut down; Cable L under the holding state 1Open circuit makes OE 1～OE 4All end CMP 1, CMP 2Output logic is 0, locking relay RL; L under the running status 1Open circuit makes OE 4End CMP 2Inverting input level V2-＞CMP 2In-phase input end level V2+, CMP 2Output logic is 0, locking relay RL, motor M stall.
3. the remote control of a kind of fire-proof motor according to claim 1, it is characterized in that: the long-range control method of described fire-proof motor is following:
(1) each one of control device all is in quasi-operating status;
(2) opening controller switch, indicator light LED 4Bright;
(3) press the button B 1, indicator light LED 2Bright, vacuum contactor KM adhesive, motor M gets electric operation;
(4) decontrol button B 1, by J KMClosure makes vacuum contactor KM keep adhesive, and motor M keeps operation, indicator light LED 2Keep bright;
(5) press the button B 2, indicator light LED 4Go out, vacuum contactor KM breaks off, and the motor M dead electricity is shut down, LED 2Extinguish thereupon;
(6) decontrol button B 2, indicator light LED 4Bright, wait for wheel operation down;
If cable L 1, L 3Short circuit, indicator light LED 3, LED 4Simultaneously bright, holding state presses the button B 1Motor is inoperative, and the outage of running status motor is shut down; If cable L 1, L 2Short circuit, indicator light LED 1, LED 2Simultaneously bright, holding state presses the button B 1Motor is inoperative, and the outage of running status motor is shut down; If cable L 2, L 3Short circuit, indicator light LED 1Bright, holding state presses the button B 1Motor is inoperative, and the outage of running status motor is shut down; If cable L 1, L 2, L 3Short circuit, indicator light LED 1, LED 2, LED 3, LED 4Simultaneously bright, holding state presses the button B 1Motor is inoperative, and the outage of running status motor is shut down;
Cable L 1Open circuit, indicator light LED 1, LED 2, LED 3, LED 4Go out simultaneously, holding state presses the button B 1Motor is inoperative, and the outage of running status motor is shut down; Cable L 2Open circuit, holding state presses the button B 1Motor is inoperative, and running status can keep motor rotation and can be through pressing the button B 2Outage is shut down; Cable L 3Open circuit, LED 4Go out, holding state presses the button B 1Motor is inoperative, and the running status outage is shut down;
Through above operation sequence, accomplished the Long-distance Control of fire-proof motor.
CN 201010579525 2010-12-07 2010-12-07 Remote control device of explosion proof motor Expired - Fee Related CN102088262B (en)

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CN 201010579525 CN102088262B (en) 2010-12-07 2010-12-07 Remote control device of explosion proof motor

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CN102088262B true CN102088262B (en) 2012-12-26

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