CN104021722A

CN104021722A - Multimode start switching teaching and skill training method and device for electric motor

Info

Publication number: CN104021722A
Application number: CN201410309784.6A
Authority: CN
Inventors: 李锐; 李德家; 季华锋; 余畅
Original assignee: China First Metallurgical Group Co Ltd
Current assignee: China First Metallurgical Group Co Ltd
Priority date: 2014-06-30
Filing date: 2014-06-30
Publication date: 2014-09-03
Anticipated expiration: 2034-06-30

Abstract

The invention relates to a multimode start switching teaching and skill training method for an electric motor. The method comprises the following steps: (1) arranging an alternating current contactor respectively connected with a direct starting loop, a star-delta depressurization starting loop, a soft starting loop and a variable frequency starting loop on a main loop, and arranging operating buttons for respectively controlling the connection and disconnection of coils of the alternating current contactor on the control loop; (2) respectively collecting the voltage, current, output torque and rotation speed of the electric motor in the starting process by virtue of a three-phase combination table arranged on the main loop as well as a torque sensor additionally arranged on the electric motor; and (3) sending four parameters including the voltage, current, output torque and rotation speed into a PLC (Programmable Logic Controller) in communication connection with the three-phase combination table and the torque sensor, and sending the four parameters to a touch screen terminal MT to be displayed. A multimode start switching teaching and skill training device comprises the electric motor, the main loop, the star-delta depressurization starting loop, a soft starting loop RQD, a frequency converter AFP, the control loop and the PLC. According the method and the device, the actual starting operation condition can be realized by controlling the action of the electric motor, and the multimode start switching teaching and skill training can be assisted.

Description

A kind of motor multimode starts switches teaching and skills training method and device thereof

Technical field

The present invention relates to metallurgical construction vocational education training field, be specifically related to a kind of motor multimode and start switching teaching and skills training method and device thereof.

Background technology

Metallurgy industry motor start-up mode is of a great variety; system control principle complexity; for ensureing that motor can safe and stable operation, commissioning staff just need to protect type understand to the relative merits between the various Starting mode of motor, principle of work and plant failure.In tradition Training Methodology, mostly adopt oral professor and written knowledge learning, various teaching to motor starter, training, examination link effectively do not integrate, comprehensive not, lack actual link of starting, it is less that student contacts the equipment chance of various starter gears test in training process, has a certain distance with scene is actual, affected the quality of teaching or training, do not reach the object of actual training operation on duty, do not possess feasibility and versatility.

Summary of the invention

The technical problem to be solved in the present invention is, for existing motor start-up training above shortcomings, provide a kind of motor multimode to start and switch teaching and skills training method and device thereof, set up the training set consistent with field apparatus, realize the actual operation conditions that starts by controlling motor action, assist and between multiple Starting mode, switch teaching and skills training.

The present invention for solving the problems of the technologies described above adopted technical scheme is:

A kind of motor multimode starts switches teaching and skills training method, comprises the following steps:

1) on the major loop of motor M, arrange respectively and directly start loop, star delta reduced-voltage starting loop, soft start loop, the loop-coupled A.C. contactor of variable frequency starting with motor M, on the control loop of motor M, be provided for controlling respectively the action button of above-mentioned ac contactor coil adhesive or disconnection; Realizing motor M by the direct coil adhesive of A.C. contactor starting of corresponding control motor M or the action button of disconnection on control loop directly starts, stops; Realize motor M star delta reduced-voltage starting, stop by the corresponding coil adhesive of A.C. contactor of controlling motor M star delta reduced-voltage starting or the action button of disconnection and time relay K T on control loop; Realize motor M soft start, stop by the corresponding coil adhesive of A.C. contactor or the action button of disconnection of controlling motor M soft start on control loop; Realize motor M variable frequency starting, stop by the corresponding coil adhesive of A.C. contactor or the action button of disconnection of controlling motor M variable frequency starting on control loop;

2) on the major loop of motor M, install three-phase combination table ZHB, on motor M, set up torque sensor CGQ simultaneously, gather voltage, the electric current in motor M start-up course by three-phase combination table ZHB, gather output torque, the rotating speed in motor M start-up course by torque sensor CGQ;

3) realize motor M in step 1 according to the action button on control loop) described direct startup, star delta reduced-voltage starting, soft start, switching between four kinds of Starting mode of variable frequency starting, and according to step 2) voltage of monitoring during motor M is started to operational process under certain Starting mode, electric current, output torque, four parameters of rotating speed are sent into and three-phase combination table ZHB, the PLC that torque sensor CGQ communication connects, PLC is connected to touch screen terminal MT by 485 buses, PLC is by above-mentioned voltage, electric current, output torque, four parameters of rotating speed carry out data processing and (as draw out voltage, electric current, output torque, the change curve of four parameters of rotating speed) after be sent to touch screen terminal MT and show (realize monitoring) to parameter in motor M operational process.

Press such scheme, described step 1) be specially:

A.C. contactor KM is set on the major loop of motor M ₁, KM ₂, KM ₃, KM ₄, KM ₅, KM ₆, KM ₇, on the control loop of motor M, be provided for controlling respectively A.C. contactor KM ₁, KM ₂, KM ₃, KM ₄, KM ₅, KM ₆, KM ₇the action button of coil adhesive or disconnection;

Described major loop is by A.C. contactor KM ₁m is connected with motor, is realized motor M and is directly started, stops by direct startup/star delta reduced-voltage starting button corresponding to control loop, direct startup/star delta reduced-voltage starting stop button;

On described control loop, be provided with and A.C. contactor KM ₂coil, KM ₃the time relay KT that coil connects, described A.C. contactor KM ₁, KM ₂, KM ₃form star delta reduced-voltage starting loop with time relay KT, described major loop is by the A.C. contactor KM in star delta reduced-voltage starting loop ₁, KM ₂, KM ₃m is connected with motor, and star delta reduced-voltage starting loop is by direct startup/star delta reduced-voltage starting button SB corresponding to control loop ₆, direct startup/star delta reduced-voltage starting stop button SB ₇and time relay K T makes A.C. contactor KM ₁, KM ₂, KM ₃coil generation difference pickup time realizes motor M star delta reduced-voltage starting, stops;

Described major loop is by A.C. contactor KM ₄rQD is connected with soft initiator, and soft initiator RQD is by A.C. contactor KM ₅m is connected with motor, and soft initiator RQD is by soft initiator start button SB corresponding to control loop ₁, soft initiator stop button SB ₂, soft initiator failure reset button SB ₈realize motor M soft start, stop and failure reset; Major loop is by A.C. contactor KM simultaneously ₆fP is connected with frequency converter A, and frequency converter A FP is by A.C. contactor KM ₇m is connected with motor, and frequency converter A FP is by frequency converter forward start button SB corresponding to control loop ₃, frequency converter reversion start button SB ₄, frequency converter stop button SB ₅, frequency converter failure reset button SB ₉realize motor M variable frequency starting, stop and failure reset (A.C. contactor KM ₄, KM ₅and A.C. contactor KM ₆, KM ₇ensure the single startup of motor M, other Starting mode are kept apart).

Press such scheme, described PLC, touch screen terminal MT and torque sensor CGQ are all connected with Switching Power Supply BC.

Press such scheme, on described PLC, be provided with direct starting relay K ₁, star delta reduced-voltage starting relay K ₂, slew relay K ₃, variable frequency starting relay K ₄, soft start relay K ₅, and button control relay K ₇auxiliary battle of K _7-1, touch-screen pilot relay K ₈auxiliary battle of K _8-1, electrothermal relay FR protection contact make war, major loop three-phase breaker QF ₁assist QF battle _1-1one end, soft initiator power control switch QF ₂assist QF battle _2-1, converter power supply gauge tap QF ₃assist QF battle _3-1, Switching Power Supply air switch QF ₄assist QF battle _4-1, three-phase combination table power switch QF ₅assist QF battle _5-1, described PLC is connected with frequency converter A FP, soft initiator RQD communication by 485 buses;

On described control loop, be also provided with that motor M controls on the spot or the long-range knob SA that selects on the spot of Long-distance Control for realizing ₁, and select knob SA for the Starting mode of selecting soft start or variable frequency starting ₂, the described long-range knob SA that selects on the spot ₁respectively with button control relay K ₇coil, button control relay K ₇auxiliary battle of K _7-2, touch-screen pilot relay K ₈coil, touch-screen pilot relay K ₈auxiliary battle of K _8-2connect; Described Starting mode is selected knob SA ₂respectively with A.C. contactor KM ₄coil, KM ₅coil, KM ₆coil, KM ₇coil connects;

As the long-range knob SA that selects on the spot ₁be connected to touch-screen pilot relay K ₈while starting Long-distance Control when coil, control loop is realized the Long-distance Control of motor M by PLC, be specially: select directly startup, star delta reduced-voltage starting, soft start, four kinds of Starting mode of variable frequency starting by touch screen terminal MT sending controling instruction to PLC, PLC is by controlling DC relay device K ₁～K ₅adhesive (indirectly control KM ₁～KM ₇) and 485 communications realize four kinds of switchings between Starting mode.

Press such scheme, described soft initiator RQD is provided with the AC relay K being connected with control loop ₆, AC relay K ₉, AC relay K ₆be used for realizing soft initiator RQD bypass changeover, AC relay K ₉be used for realizing soft initiator RQD scram; Described frequency converter A FP is provided with the AC relay K being connected with control loop ₁₀, AC relay K ₁₀be used for realizing frequency converter A FP scram.

The present invention also provides a kind of motor multimode that is applicable to said method to start to switch and has imparted knowledge to students and skills training device, comprise motor M, major loop, star delta reduced-voltage starting loop, soft initiator RQD, frequency converter A FP, control loop and PLC, described star delta reduced-voltage starting loop is by A.C. contactor KM ₁, KM ₂, KM ₃form with time relay KT; Described major loop is by the A.C. contactor KM in star delta reduced-voltage starting loop ₁be connected (realize directly and starting) with motor M; Major loop is by the A.C. contactor KM in star delta reduced-voltage starting loop simultaneously ₁, KM ₂, KM ₃be connected (realizing star delta reduced-voltage starting) with motor M; Major loop is by A.C. contactor KM simultaneously ₄rQD is connected with soft initiator, and soft initiator RQD is by A.C. contactor KM ₅be connected (realizing soft start) with motor M; Major loop is by A.C. contactor KM simultaneously ₆fP is connected with frequency converter A, and frequency converter A FP is by A.C. contactor KM ₇be connected (realizing variable frequency starting) with motor M; On described major loop, be also equiped with the three-phase combination table ZHB being connected with motor M, three-phase combination table ZHB is for gathering voltage, the electric current of motor M start-up course; On described motor M, have additional torque sensor CGQ, torque sensor CGQ is for gathering output torque, the rotating speed of motor M start-up course; Described control loop is connected with star delta reduced-voltage starting loop, soft initiator RQD, frequency converter A FP respectively; Described torque sensor CGQ is connected with PLC communication, described PLC is connected with frequency converter A FP, soft initiator RQD, three-phase combination table ZHB and touch screen terminal MT communication by 485 buses, and torque sensor CGQ, PLC, touch screen terminal MT are all connected with Switching Power Supply BC.

Press such scheme, the major loop three-phase supply A of described motor M, B, C respectively with major loop three-phase breaker QF ₁a terminal be connected, major loop three-phase breaker QF ₁the other end respectively with fuse FU ₁, FU ₂, FU ₃one end be connected, FU ₁, FU ₂, FU ₃the other end successively with A.C. contactor KM ₁auxiliary contact, electrothermal relay FR, motor M, A.C. contactor KM ₂auxiliary contact be connected; FU ₁, FU ₂, FU ₃the other end also successively with A.C. contactor KM ₄auxiliary contact connect after be connected with R, S, the T terminal of soft initiator RQD again; FU ₁, FU ₂, FU ₃the other end also successively with A.C. contactor KM ₆auxiliary contact connect after be connected with R, S, the T terminal of frequency converter A FP again; Meanwhile, FU ₁, FU ₂, FU ₃the other end also successively with A.C. contactor KM ₃auxiliary contact connect after again with A.C. contactor KM ₂auxiliary contact be connected;

Soft initiator power control switch QF ₂be connected U, V, W terminal and the A.C. contactor KM of soft initiator RQD with L, the N terminal of soft initiator RQD ₅auxiliary contact connect after incoming transport contactor KM ₁auxiliary contact and motor M between terminals; The RESET terminal of soft initiator RQD and soft initiator failure reset button SB ₈one end connect, soft initiator failure reset button SB ₈the other end be connected with the COM terminal of soft initiator RQD, the RUN terminal of soft initiator RQD and AC relay K ₁₁auxiliary battle of K _11-2one end connect, AC relay K ₁₁auxiliary battle of K _11-2the other end and AC relay K ₁₂auxiliary battle of K _12-2one end, the SD terminal of soft initiator RQD be connected, No. 1 terminal of soft initiator RQD and button control relay K ₇auxiliary battle of K _7-2one end, touch-screen pilot relay K ₈auxiliary battle of K _8-2one end be connected, button control relay K ₇auxiliary battle of K _7-2the other end be connected with No. 2 terminals of soft initiator RQD, touch-screen pilot relay K ₈auxiliary battle of K _8-2the other end be connected with No. 3 terminals of soft initiator RQD; No. 4 terminals of soft initiator RQD and AC relay K ₉one end of coil is connected, AC relay K ₉the other end of coil is connected with No. 5 terminals of soft initiator RQD, No. 6 terminals of soft initiator RQD and AC relay K ₆one end of coil is connected, AC relay K ₆the other end of coil is connected with No. 7 terminals of soft initiator RQD;

Converter power supply gauge tap QF ₃be connected U, V, W terminal and the A.C. contactor KM of frequency converter A FP with L, the N terminal of frequency converter A FP ₇auxiliary contact connect after incoming transport contactor KM ₁auxiliary contact and motor M between terminals; The STF terminal of frequency converter A FP and AC relay K ₁₃auxiliary battle of K _13-3one end be connected, AC relay K ₁₃auxiliary battle of K _13-3the other end and AC relay K ₁₄auxiliary battle of K _14-3one end, AC relay K ₁₅auxiliary battle of K _15-3the SD terminal of one end, frequency converter A FP be connected, AC relay K ₁₄auxiliary battle of K _14-3the other end be connected with the STR terminal of frequency converter A FP, AC relay K ₁₅auxiliary battle of K _15-3the other end be connected with the STOP terminal of frequency converter A FP, No. 1 terminal of frequency converter A FP and button control relay K ₇auxiliary battle of K _7-3one end, touch-screen pilot relay K ₈auxiliary battle of K _8-3one end be connected, button control relay K ₇auxiliary battle of K _7-3the other end be connected with No. 2 terminals of frequency converter A FP, touch-screen pilot relay K ₈auxiliary battle of K _8-3the other end be connected with No. 3 terminals of frequency converter A FP, No. 4 terminals of frequency converter A FP, No. 5 terminals, No. 6 terminals are connected respectively (potentiometer RP, for controlling the output frequency of frequency converter A FP, realizes the function of lowering economize on electricity motivation M rotating speed at variable frequency starting) with three pins of potentiometer RP; No. 7 terminals of frequency converter A FP and AC relay K ₁₀one end of coil is connected, AC relay K ₁₀the other end of coil is connected with No. 8 terminals of frequency converter A FP, the COM terminal of frequency converter A FP and frequency converter failure reset button SB ₉one end be connected, frequency converter failure reset button SB ₉the other end be connected with the RESET terminal of frequency converter A FP;

Switching Power Supply air switch QF ₄be connected with L, the N terminal of Switching Power Supply BC; Three-phase combination table power switch QF ₅be connected with L, the N terminal of three-phase combination table ZHB; The I of three-phase combination table ZHB _a+terminal and mutual inductor C _ano. 1 terminal connect, I _a-terminal and mutual inductor C _ano. 2 terminals connect, I _b+terminal and mutual inductor C _bno. 1 terminal connect, I _b-terminal and mutual inductor C _bno. 2 terminals connect, I _c+terminal and mutual inductor C _cno. 1 terminal connect, I _c-terminal and mutual inductor C _cno. 2 terminals connect; Mutual inductor C _a, C _b, C _cbe connected on respectively A.C. contactor KM ₁auxiliary contact and electrothermal relay FR between A, B, C tri-phase connections on (being positioned at the terminals upside of motor M); The U of three-phase combination table ZHB _aterminal and A.C. contactor KM ₁no. 1 terminal be connected, U _bterminal and A.C. contactor KM ₁no. 2 terminals be connected, U _cterminal and A.C. contactor KM ₁no. 3 terminals be connected;

Fuse FU ₃the other end also with fuse FU ₄one end be connected, fuse FU ₄the other end be connected with one end of the protection contact of thermal protector FR, the other end of the protection contact of thermal protector FR and system scram button SB ₁₀one end connect, system scram button SB ₁₀the other end and slew relay K ₃auxiliary close point one end connect, slew relay K ₃the other end and the long-range knob SA that selects on the spot of auxiliary close point ₁1, No. 5 terminal, touch-screen pilot relay K ₈auxiliary battle of K _8-2one end connect, button control relay K ₇auxiliary battle of K _7-2one end; The long-range knob SA that selects on the spot ₁no. 2 terminals and button control relay K ₇one end of coil connects, the long-range knob SA that selects on the spot ₁no. 6 terminals and touch-screen pilot relay K ₈one end of coil connects;

Touch-screen pilot relay K ₈auxiliary battle of K _8-2the other end and direct starting relay K ₁auxiliary battle of K _1-1one end, star delta reduced-voltage starting relay K ₂auxiliary battle of K _2-1one end, variable frequency starting relay K ₄auxiliary battle of K _4-1one end, soft start relay K ₅auxiliary battle of K _5-1one end, touch-screen pilot relay K ₈auxiliary battle of K _8-3one end connect;

Button control relay K 7 auxiliary open point K 7-2 the other end of the soft starter start button SB 1 end, AC relay K 11 auxiliary open point K 11-1 of end, the soft starter stop button SB 2 end, drive forward the start button SB 3 end, AC relay K 13 auxiliary open point K 13-1 end, the drive reverse start button SB 4 end, AC relay K 14 auxiliary open point K 14-1 end, the drive stop button SB 5 end, AC relay K 10 auxiliary open point K 10- 1 end, direct start / stop button to start delta buck SB 7 end, direct start / delta down the start button SB 6 end, AC contactor KM 1 auxiliary prescription KM 1-1 end AC relay K 6 auxiliary open point K 6-1 end, AC relay K 16 auxiliary closing point K 16-2 end, time relay KT auxiliary prescription KT - 1 end, AC contactor KM 3 auxiliary prescription KM 3-2 end, start-up mode selection knob SA 2 No. 1,3,5,7 terminals, AC relay K 17 auxiliary open point K 17-2 end, AC contactor KM 4 auxiliary prescription KM 4-1 of end, AC contactor KM 6 auxiliary prescription KM 6-1 end, the button control relay K 7 auxiliary open point K 7-3 end of the connection; soft start start button SB 1 the other end of the AC relay K 11 auxiliary open point K 11-1 other end of the AC relay K 9 auxiliary closing point K 9-1 end of the connection, communication relay K 9 auxiliary closing point K 9-1 the other end of the AC relay K 12 auxiliary closing point K 12-1 end of the connection, communication relay K 12 auxiliary closing point K 12-1 the other end of the AC contactor KM 4 auxiliary prescription KM 4-2 end of the connection, AC contactor KM 4 auxiliary prescription KM 4-2 the other end of the AC relay K 11 connect one end of the coil; soft start stop button SB 2 the other end of the AC relay K 12 coil connect one end, drive forward the start button SB 3 the other end of the AC relay K 13 auxiliary open point K 13-1 other end of the AC relay K 14 auxiliary closing point K 14-2 end of the connection, communication relay K 14 auxiliary closing point K 14-2 the other end of the AC relay K 15 auxiliary closing point K 15-1 end of the connection, communication relay K 15 auxiliary closing point K 15-1 the other end of the AC contactor KM 6 auxiliary prescription KM 6-2 end of the connection, AC contactor KM 6 auxiliary prescription KM 6- 2 the other end of the AC relay K 13 connect one end of the coil; inverter reverse start button SB 4 the other end of the AC relay K 14 auxiliary open point K 14-1 other end of the AC relay K 13 auxiliary closing point K 13-2 end of the connection, communication relay K 13 auxiliary closing point K 13-2 the other end of the AC relay K 15 auxiliary closing point K 15-2 end of the connection, communication relay K 15 auxiliary closing point K 15-2 the other end of the AC contactor KM 6 auxiliary prescription KM 6-3 end of the connection, AC contactor KM 6 auxiliary prescription KM 6-3 the other end of the AC relay K 14 connect one end of the coil; inverter stop button SB 5 the other end of the AC relay K 10 auxiliary opening point K 10-1 other end of the AC relay K 15 connect one end of the coil; direct start / stop button to start delta buck SB 7 the other end of the AC relay K 18 connect one end of the coil, direct start / delta down the start button SB 6 the other end of the AC contactor KM 1 auxiliary prescription KM 1-1 other end of the AC relay K 16 auxiliary open point K 16-1 end, AC relay K 17 auxiliary open point K 17-1 end of the connection, communication relay K 17 auxiliary open point K 17-1 the other end of the AC relay K 16 auxiliary open point K 16-1 other end of the AC relay K 18 auxiliary closing point K 18-1 end, AC relay K 6 auxiliary open point K 6-1 other end, direct start relay K 1 auxiliary open point K 1-1 other end, AC contactor KM 3 auxiliary closing point KM 3-1 end of the connection, communication relay K 18 auxiliary closing point K 18-1 the other end of the AC contactor KM end connection 1 coils, AC contactor KM 3 auxiliary closing point KM 3-1 the other end of the AC contactor KM 2 coil end, one end of the relay coil is connected KT; AC relay K 16 auxiliary closing point K 16-2 another One end of AC contactor KM 2 auxiliary closing point KM 2-1 end, star delta buck starts relay K 2 auxiliary open point K 2-1 other end, AC contactor KM 3 <one end of the connection / sub> coils, AC contactor KM 2 auxiliary closing point KM 2-1 the other end KT open auxiliary relay point KT - 1 other end, AC contactor KM 3 auxiliary prescription KM 3-2 the other end of the connection; frequency start relay K 4 auxiliary open point K 4- 1 the other end of the AC contactor KM end 4 coils, AC contactor KM 5 coil one end of the start-up mode selection knob SA 2 terminal connection on the 2nd, start-up mode selection knob SA 2 terminal on the 4th and AC relay K end 16 coil connection, start-up mode selection knob SA 2 of the 6th terminal and AC relay K end 17 coil connection, start-up mode selection knob SA 2 in the 8th terminal and soft-start relay K 5 auxiliary open point K 5-1 other end, AC contactor KM 6 coil end, AC contactor KM end 7 coil connections, AC relay K 17 auxiliary open point K 17-2 the other end directly activated lights L 1 end of the connection, communication relay K 16 auxiliary open point K 16-3 the other end of the delta voltage starting lights L 2 of connect one end, AC contactor KM 4 auxiliary prescription KM 4-1 the other end of the soft-start indicator L 3 end of the connection, AC contactor KM 6 auxiliary prescription KM 6-1 the other end of the soft-start indicator L 4 end of the connection, the button control relay K 7 auxiliary open points K 7-3 and place the other end of the control indicator L 5 end connection, touch screen control relay K 8 auxiliary open point K 8-3 the other end of the remote control indicator L 6 end of the connection;

Described button control relay K ₇the other end of coil, touch-screen pilot relay K ₈the other end of coil, AC relay K ₁₁the other end of coil, AC relay K ₁₂the other end of coil, AC relay K ₁₃the other end of coil, AC relay K ₁₄the other end of coil, AC relay K ₁₅the other end of coil, AC relay K ₁₈the other end of coil, A.C. contactor KM ₁the other end of coil, A.C. contactor KM ₂the other end of coil, the other end of time relay KT coil, A.C. contactor KM ₃the other end of coil, A.C. contactor KM ₄the other end of coil, A.C. contactor KM ₅the other end of coil, AC relay K ₁₆the other end of coil, AC relay K ₁₇the other end of coil, A.C. contactor KM ₆the other end of coil, A.C. contactor KM ₇the other end of coil, directly start pilot lamp L ₁the other end, star delta reduced-voltage starting pilot lamp L ₂the other end, soft start pilot lamp L ₃the other end, variable frequency starting pilot lamp L ₄the other end, control pilot lamp L on the spot ₅the other end, Long-distance Control pilot lamp L ₆the other end connect and all access the N line end of major loop;

Described torque sensor CGQ is arranged on motor M, No. 1 terminal of torque sensor CGQ is connected with No. 1 terminal of PLC, No. 2 terminals of torque sensor CGQ are connected with No. 2 terminals of PLC, No. 3 terminals of torque sensor CGQ are connected with No. 3 terminals of PLC, No. 4 terminals of torque sensor CGQ are connected with No. 4 terminals of PLC, the 24V+ of torque sensor CGQ is connected with the 24V+ terminal of Switching Power Supply BC, and the 24V-of torque sensor CGQ is connected with the 24V-terminal of Switching Power Supply BC;

The COM1 end of PLC and direct starting relay K ₁, star delta reduced-voltage starting relay K ₂, slew relay K ₃, variable frequency starting relay K ₄, soft start relay K ₅one end be connected, directly starting relay K ₁the other end and the Y of PLC ₁number terminal is connected, star delta reduced-voltage starting relay K ₂the other end and the Y of PLC ₂number terminal is connected, slew relay K ₃the other end and the Y of PLC ₃number terminal is connected, variable frequency starting relay K ₄the other end and the Y of PLC ₄number terminal is connected, soft start relay K ₅the other end and the Y of PLC ₅number terminal is connected; COM2 end and the button control relay K of PLC ₇auxiliary battle of K _7-1one end, touch-screen pilot relay K ₈auxiliary battle of K _8-1the protection contact of one end, electrothermal relay FR one end, the major loop three-phase breaker QF of making war ₁assist QF battle _1-1one end, soft initiator power control switch QF ₂assist QF battle _2-1one end, converter power supply gauge tap QF ₃assist QF battle _3-1one end, Switching Power Supply air switch QF ₄assist QF battle _4-1one end, three-phase combination table power switch QF ₅assist QF battle _5-1one end connect; Button control relay K ₇auxiliary battle of K _7-1the other end and the X of PLC ₁number terminal is connected, touch-screen pilot relay K ₈auxiliary battle of K _8-1the other end and the X of PLC ₂number terminal is connected, the other end that the protection contact of electrothermal relay FR is made war and the X of PLC ₃number terminal is connected, major loop three-phase breaker QF ₁assist QF battle _1-1the other end and the X of PLC ₄number terminal is connected, soft initiator power control switch QF ₂assist QF battle _2-1the other end and the X of PLC ₅number terminal is connected, converter power supply gauge tap QF ₃assist QF battle _3-1the other end and the X of PLC ₆number terminal is connected, Switching Power Supply air switch QF ₄assist QF battle _4-1the other end and the X of PLC ₇number terminal is connected, three-phase combination table power switch QF ₅assist QF battle _5-1the other end and the X of PLC ₈number terminal is connected; The CH of PLC ₁the 485+ terminal of passage is connected with the 485+ terminal of soft initiator RQD, the CH of PLC ₁the 485-terminal of passage is connected with the 485-terminal of soft initiator RQD; The CH of PLC ₂the 485+ terminal of passage is connected with the 485+ terminal of frequency converter A FP, the CH of PLC ₂the 485-terminal of passage is connected with the 485-terminal of frequency converter A FP; The CH of PLC ₃the 485+ terminal of passage is connected with the 485+ terminal of three-phase combination table ZHB, the CH of PLC ₃the 485-terminal of passage is connected with the 485-terminal of three-phase combination table ZHB; The CH of PLC ₄the 485+ terminal of passage is connected with the 485+ terminal of touch screen terminal MT, the CH of PLC ₄the 485-terminal of passage is connected with the 485-terminal of touch screen terminal MT; The 24V+ connecting terminals of PLC is received on the 24V+ terminal of 24V+ terminal, touch screen terminal of Switching Power Supply BC, and the 24V-connecting terminals of PLC is received on the 24V-terminal of the 24V-terminal of Switching Power Supply BC, touch screen terminal.

Principle of work of the present invention: control loop is realized motor start-up mode and selected and control the functions such as start and stop, fault alarm and failure reset, and control loop can also be realized by PLC the Long-distance Control of motor; Between PLC and touch screen terminal, frequency converter, soft initiator, adopt 485 bus Direct Communications to be connected, make Training Methodology be not limited to push-botton operation, start-up also can be monitored and control the running status of motor voltage, electric current, output torque, rotating speed, frequency converter and soft initiator by touch screen terminal.By technology such as PLC, relay, A.C. contactor, soft initiator, frequency converters, by motor directly start, four kinds of start-up mode such as star delta reduced-voltage starting, soft start, variable frequency starting and device effectively integrate, utilize sensor technology to carry out Real-Time Monitoring to the voltage in motor start-up operational process, electric current, output torque, four parameters of rotating speed, shown by touch screen terminal, realize teaching and the skills training of operating personnel to the various starter gears of motor by this device.

The present invention compared with prior art, has following major advantage:

1, Training Environment is true, teaching and training contents all adopt system that true components and parts form but not simulation softward carries out, can truly reflect the actual startup of motor operation conditions, allow student in real environment learning and the principle of work of understanding various starter gears, can contact more easily and use various starter gears;

2, training contents is wide, and existing actual training device function has been brought together, and start-up can understand direct startup, star delta reduced-voltage starting, soft start, four kinds of Starting mode of variable frequency starting;

3, more intuitively, contrast property is strong, motor operational factor is changed and monitored in real time, the change curve of voltage, electric current, output torque, four parameters of rotating speed in motor start-up operational process is embodied by touch screen terminal, make its change procedure more directly perceived, different startups and the parking mode strengthened between the similarities and differences and the same starter gear of start-up to four kinds of starter gears are compared, and understand its applied environment and occasion.

Brief description of the drawings

Fig. 1 is that embodiment of the present invention motor multimode starts switching teaching and skills training principle of device block diagram;

Fig. 2 is that embodiment of the present invention motor multimode starts the circuit diagram that switches teaching and skills training device;

In Fig. 2, KT-time relay; ZHB-three-phase combination table; M-motor; CGQ-torque sensor; AFP-frequency converter; RQD-soft initiator; RP-potentiometer; BC-Switching Power Supply; MT-touch screen terminal; FR-electrothermal relay; PLC-logic control programmable device; K ₁-directly starting relay; K ₂-star delta reduced-voltage starting relay; K ₃-slew relay; K ₄-variable frequency starting relay; K ₅-soft start relay; K ₆-AC relay; K ₇-button control relay; K ₈-touch-screen pilot relay; K ₉～K ₁₈-AC relay; KM ₁～KM ₇-A.C. contactor; C _a, C _b, C _c-mutual inductor; FU ₁, FU ₂, FU ₃, FU ₄-fuse; SA ₁-long-range the knob of selecting on the spot; SA ₂-Starting mode is selected knob; SB ₁-soft initiator start button; SB ₂-soft initiator stop button; SB ₃-frequency converter forward start button; SB ₄-frequency converter reversion start button; SB ₅-frequency converter stop button; SB ₆-directly startup/star delta reduced-voltage starting button; SB ₇-directly startup/star delta reduced-voltage starting stop button; SB ₈-soft initiator failure reset button; SB ₉-frequency converter failure reset button; SB ₁₀-system scram button; QF ₁-major loop three-phase breaker; QF ₂-soft initiator power control switch; QF ₃-converter power supply gauge tap; QF ₄-Switching Power Supply air switch; QF ₅-three-phase combination table power switch; L ₁-directly start pilot lamp; L ₂-star delta reduced-voltage starting pilot lamp; L ₃-soft start pilot lamp; L ₄-variable frequency starting pilot lamp; L ₅-control on the spot pilot lamp; L ₆-Long-distance Control pilot lamp.

Embodiment

In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.

Start and switch teaching and skills training principle of device block diagram with reference to the motor multimode of the embodiment of the present invention shown in Fig. 1, start-up inputs instruction to PLC by touch screen terminal MT, by PLC according to instruction to direct startup, star delta reduced-voltage starting, soft start, four kinds of Starting mode of variable frequency starting are selected, motor M starts according to corresponding selected Starting mode and will start the voltage of run duration, electric current, rotating speed, four parameter change informations of torque feed back to three-phase combination table ZHB and torque sensor CGQ, the information of PLC to three-phase combination table ZHB and torque sensor CGQ, after processing, sending touch screen terminal MT back to shows, start-up can observe intuitively the feature of four kinds of Starting mode on touch screen terminal MT, understand application scenario and the environment of various Starting mode.This device also can simulated field practical operation knob SA simultaneously ₁～SA ₂with control knob SB ₁～SB ₁₀control or utilize touch screen terminal and PLC communication to control.On touch screen terminal MT, be also provided with the USB interface that can be connected with background computer, background computer is by USB interface acceptance test parameters.

Start the circuit diagram that switches teaching and skills training device with reference to the motor multimode of the preferred embodiment of the present invention shown in Fig. 2, the major loop three-phase supply A of described motor M, B, C respectively with major loop three-phase breaker QF ₁a terminal be connected, major loop three-phase breaker QF ₁the other end respectively with fuse FU ₁, FU ₂, FU ₃one end be connected, FU ₁, FU ₂, FU ₃the other end successively with A.C. contactor KM ₁auxiliary contact, electrothermal relay FR, motor M, A.C. contactor KM ₂auxiliary contact be connected; FU ₁, FU ₂, FU ₃the other end also successively with A.C. contactor KM ₄auxiliary contact connect after be connected with R, S, the T terminal of soft initiator RQD again; FU ₁, FU ₂, FU ₃the other end also successively with A.C. contactor KM ₆auxiliary contact connect after be connected with R, S, the T terminal of frequency converter A FP again; Meanwhile, FU ₁, FU ₂, FU ₃the other end also successively with A.C. contactor KM ₃auxiliary contact connect after again with A.C. contactor KM ₂auxiliary contact be connected;

Converter power supply gauge tap QF ₃be connected U, V, W terminal and the A.C. contactor KM of frequency converter A FP with L, the N terminal of frequency converter A FP ₇auxiliary contact connect after incoming transport contactor KM ₁auxiliary contact and motor M between terminals; The STF terminal of frequency converter A FP and AC relay K ₁₃auxiliary battle of K _13-3one end be connected, AC relay K ₁₃auxiliary battle of K _13-3the other end and AC relay K ₁₄auxiliary battle of K _14-3one end, AC relay K ₁₅auxiliary battle of K _15-3the SD terminal of one end, frequency converter A FP be connected, AC relay K ₁₄auxiliary battle of K _14-3the other end be connected with the STR terminal of frequency converter A FP, AC relay K ₁₅auxiliary battle of K _15-3the other end be connected with the STOP terminal of frequency converter A FP, No. 1 terminal of frequency converter A FP and button control relay K ₇auxiliary battle of K _7-3one end, touch-screen pilot relay K ₈auxiliary battle of K _8-3one end be connected, button control relay K ₇auxiliary battle of K _7-3the other end be connected with No. 2 terminals of frequency converter A FP, touch-screen pilot relay K ₈auxiliary battle of K _8-3the other end be connected with No. 3 terminals of frequency converter A FP, No. 4 terminals of frequency converter A FP, No. 5 terminals, No. 6 terminals are connected with three pins of potentiometer RP respectively; No. 7 terminals of frequency converter A FP and AC relay K ₁₀one end of coil is connected, AC relay K ₁₀the other end of coil is connected with No. 8 terminals of frequency converter A FP, the COM terminal of frequency converter A FP and frequency converter failure reset button SB ₉one end be connected, frequency converter failure reset button SB ₉the other end be connected with the RESET terminal of frequency converter A FP;

Button control relay K 7 auxiliary open point K 7-2 the other end of the soft starter start button SB 1 end, AC relay K 11 auxiliary open point K 11-1 of end, the soft starter stop button SB 2 end, drive forward the start button SB 3 end, AC relay K 13 auxiliary open point K 13-1 end, the drive reverse start button SB 4 end, AC relay K 14 auxiliary open point K 14-1 end, the drive stop button SB 5 end, AC relay K 10 auxiliary open point K 10- 1 end, direct start / stop button to start delta buck SB 7 end, direct start / delta down the start button SB 6 end, AC contactor KM 1 auxiliary prescription KM 1-1 end AC relay K 6 auxiliary open point K 6-1 end, AC relay K 16 auxiliary closing point K 16-2 end, time relay KT auxiliary prescription KT - 1 end, AC contactor KM 3 auxiliary prescription KM 3-2 end, start-up mode selection knob SA 2 No. 1,3,5,7 terminals, AC relay K 17 auxiliary open point K 17-2 end, AC contactor KM 4 auxiliary prescription KM 4-1 of end, AC contactor KM 6 auxiliary prescription KM 6-1 end, the button control relay K 7 auxiliary open point K 7-3 end of the connection; soft start start button SB 1 the other end of the AC relay K 11 auxiliary open point K 11-1 other end of the AC relay K 9 auxiliary closing point K 9-1 end of the connection, communication relay K 9 auxiliary closing point K 9-1 the other end of the AC relay K 12 auxiliary closing point K 12-1 end of the connection, communication relay K 12 auxiliary closing point K 12-1 the other end of the AC contactor KM 4 auxiliary prescription KM 4-2 end of the connection, AC contactor KM 4 auxiliary prescription KM 4-2 the other end of the AC relay K 11 connect one end of the coil; soft start stop button SB 2 the other end of the AC relay K 12 coil connect one end, drive forward the start button SB 3 the other end of the AC relay K 13 auxiliary open point K 13-1 other end of the AC relay K 14 auxiliary closing point K 14-2 end of the connection, communication relay K 14 auxiliary closing point K 14-2 the other end of the AC relay K 15 auxiliary closing point K 15-1 end of the connection, communication relay K 15 auxiliary closing point K 15-1 the other end of the AC contactor KM 6 auxiliary prescription KM 6-2 end of the connection, AC contactor KM 6 auxiliary prescription KM 6- 2 the other end of the AC relay K 13 connect one end of the coil; inverter reverse start button SB 4 the other end of the AC relay K 14 auxiliary open point K 14-1 other end of the AC relay K 13 auxiliary closing point K 13-2 end of the connection, communication relay K 13 auxiliary closing point K 13-2 the other end of the AC relay K 15 auxiliary closing point K 15-2 end of the connection, communication relay K 15 auxiliary closing point K 15-2 the other end of the AC contactor KM 6 auxiliary prescription KM 6-3 end of the connection, AC contactor KM 6 auxiliary prescription KM 6-3 the other end of the AC relay K 14 connect one end of the coil; inverter stop button SB 5 the other end of the AC relay K 10 auxiliary opening point K 10-1 other end of the AC relay K 15 connect one end of the coil; direct start / stop button to start delta buck SB 7 the other end of the AC relay K 18 connect one end of the coil, direct start / delta down the start button SB 6 the other end of the AC contactor KM 1 auxiliary prescription KM 1-1 other end of the AC relay K 16 auxiliary open point K 16-1 end, AC relay K 17 auxiliary open point K 17-1 end of the connection, communication relay K 17 auxiliary open point K 17-1 the other end of the AC relay K 16 auxiliary open point K 16-1 other end of the AC relay K 18 auxiliary closing point K 18-1 end, AC relay K 6 auxiliary open point K 6-1 other end, direct start relay K 1 auxiliary open point K 1-1 other end, AC contactor KM 3 auxiliary closing point KM 3-1 end of the connection, communication relay K 18 auxiliary closing point K 18-1 the other end of the AC contactor KM end connection 1 coils, AC contactor KM 3 auxiliary closing point KM 3-1 the other end of the AC contactor KM 2 coil end, one end of the relay coil is connected KT; AC relay K 16 auxiliary closing point K 16-2 another One end of AC contactor KM 2 auxiliary closing point KM 2-1 end, star delta buck starts relay K 2 auxiliary open point K 2-1 other end, AC contactor KM 3 <end / sub> coil connections, AC contactor KM 2 auxiliary closing point KM 2-1 the other end KT open auxiliary relay point KT - 1 other end, AC contactor KM 3 auxiliary prescription KM 3-2 the other end of the connection; frequency start relay K 4 auxiliary open point K 4- 1 the other end of the AC contactor KM end 4 coils, AC contactor KM 5 coil one end of the start-up mode selection knob SA 2 terminal connection on the 2nd, start-up mode selection knob SA 2 terminal on the 4th and connect one end of the AC relay K 16 coil, start-up mode selection knob SA 2 terminal and exchange the 6th relay K end 17 coil connection, start-up mode selection knob SA 2 in the 8th terminal and soft-start relay K 5 auxiliary open point K 5-1 other end, AC contactor KM 6 coil end, AC contactor KM end 7 coil connections, AC relay K 17 auxiliary open point K 17-2 the other end directly activated lights L 1 end of the connection, communication relay K 16 auxiliary open point K 16-3 the other end of the delta voltage starting lights L 2 of connect one end, AC contactor KM 4 auxiliary prescription KM 4-1 the other end of the soft-start indicator L 3 end of the connection, AC contactor KM 6 auxiliary prescription KM 6-1 <end / sub> the other end of the soft-start indicator L 4 is connected, the button control relay K 7 auxiliary open points K 7-3 and place the other end of the control indicator L 5 end connection, touch screen control relay K 8 auxiliary open point K 8-3 the other end of the remote control indicator L 6 end of the connection;

In Fig. 2, SB ₁～SB ₉for A16-11SY type reset button, SB ₁₀for A16-11SY type scram button, FU ₁～FU ₄for 3X10 type fuse, L ₁～L ₆for AD16-22DS/31 type pilot lamp, KM ₁～KM ₇for CJ20J-40A type A.C. contactor, ZHB is PZ48-AI3 type three-phase combination table, and M is H180-355 type test motor, and BC is D-30 type Switching Power Supply, and MT is MT6070iH type touch-screen, K ₁～K ₅for LY4N-JDC24 type 24V DC relay, K ₆～K ₁₈for LL2F type AC relay, RQD is MSCC10-3-B2 type soft initiator, and AFP is PTI-G4T0110 type frequency converter, and CGQ is 0300 type torque sensor, and KT is the ZYS3A type time relay.

Connect electric wiring according to Fig. 2, closing switch power supply air switch QF ₄, major loop three-phase breaker QF ₁, carry out following steps: knob is reached to Long-distance Control, select directly startup, star delta reduced-voltage starting, soft start, four kinds of start-up mode of variable frequency starting by touch screen terminal MT sending controling instruction to PLC, PLC is by controlling A.C. contactor KM ₁～KM ₇adhesive realize the switching between several starter gears.Given, the data monitoring of parameter carry out data processing and send to relevant apparatus by PLC, when motor start-up operation, can automatically draw the change curve of voltage, electric current, output torque, four parameters of rotating speed.

In addition, this device also can be by direct startup/star delta reduced-voltage starting button SB of control loop ₆, direct startup/star delta reduced-voltage starting stop button SB ₇, soft initiator start button SB ₁, soft initiator stop button SB ₂, soft initiator failure reset button SB ₈control Deng directly, and PLC can be connected with touch screen terminal, by USB interface acceptance test parameters.

Described touch screen terminal MT and system scram button SB ₁₀be installed on the electrical control cubicles panel of whole device, touch screen terminal MT and PLC carry out communication, and start-up can complete the function such as switching and selection between given, the multiple startup method of operation of demonstration, parameter to motoring by touch screen terminal MT.

Described control mode has three kinds: a, button add knob control; On b, touch screen terminal, directly control; C, computing machine and PLC carry out Communication Control.Parameter set-point has three kinds of form: a, on touch screen terminal, set set-point passes to PLC; B, directly given on frequency converter, soft initiator control panel; C, device leave subroutine entry, and start-up can freely pack coding into and carry out given.

As mentioned above, operations according to the instant invention method, the operational process parameter of motor changes and can be reflected in really on touch-screen, thereby can make different startups and parking mode between the similarities and differences and the same starter gear of trainee to four kinds of starter gears compare, understand its applied environment and occasion.

Finally it should be noted that above content is only in order to technical scheme of the present invention to be described, but not limiting the scope of the invention, in accompanying drawing 2, circuit diagram only makes reference, with the adjustment that is as the criterion of working control circuit.The simple modification that those of ordinary skill in the art carries out technical scheme of the present invention or be equal to replacement, does not all depart from essence and the scope of technical solution of the present invention.

Claims

1. motor multimode starts and switches teaching and a skills training method, it is characterized in that, comprises the following steps:

3) realize motor M in step 1 according to the action button on control loop) described direct startup, star delta reduced-voltage starting, soft start, switching between four kinds of Starting mode of variable frequency starting, and according to step 2) voltage of monitoring during motor M is started to operational process under certain Starting mode, electric current, output torque, four parameters of rotating speed are sent into and three-phase combination table ZHB, the PLC that torque sensor CGQ communication connects, PLC is connected to touch screen terminal MT by 485 buses, PLC is by above-mentioned voltage, electric current, output torque, four parameters of rotating speed carry out being sent to touch screen terminal MT demonstration after data processing.

2. motor multimode as claimed in claim 1 starts and switches teaching and skills training method, it is characterized in that described step 1) be specially:

Described major loop is by A.C. contactor KM ₄rQD is connected with soft initiator, and soft initiator RQD is by A.C. contactor KM ₅m is connected with motor, and soft initiator RQD is by soft initiator start button SB corresponding to control loop ₁, soft initiator stop button SB ₂, soft initiator failure reset button SB ₈realize motor M soft start, stop and failure reset; Major loop is by A.C. contactor KM simultaneously ₆fP is connected with frequency converter A, and frequency converter A FP is by A.C. contactor KM ₇m is connected with motor, and frequency converter A FP is by frequency converter forward start button SB corresponding to control loop ₃, frequency converter reversion start button SB ₄, frequency converter stop button SB ₅, frequency converter failure reset button SB ₉realize motor M variable frequency starting, stop and failure reset.

3. motor multimode as claimed in claim 1 starts and switches teaching and skills training method, it is characterized in that, described PLC, touch screen terminal MT and torque sensor CGQ are all connected with Switching Power Supply BC.

4. motor multimode as claimed in claim 1 starts and switches teaching and skills training method, it is characterized in that, is provided with direct starting relay K on described PLC ₁, star delta reduced-voltage starting relay K ₂, slew relay K ₃, variable frequency starting relay K ₄, soft start relay K ₅, and button control relay K ₇auxiliary battle of K _7-1, touch-screen pilot relay K ₈auxiliary battle of K _8-1, electrothermal relay FR protection contact make war, major loop three-phase breaker QF ₁assist QF battle _1-1one end, soft initiator power control switch QF ₂assist QF battle _2-1, converter power supply gauge tap QF ₃assist QF battle _3-1, Switching Power Supply air switch QF ₄assist QF battle _4-1, three-phase combination table power switch QF ₅assist QF battle _5-1, described PLC is connected with frequency converter A FP, soft initiator RQD communication by 485 buses;

As the long-range knob SA that selects on the spot ₁be connected to touch-screen pilot relay K ₈while starting Long-distance Control when coil, control loop is realized the Long-distance Control of motor M by PLC, be specially: select directly startup, star delta reduced-voltage starting, soft start, four kinds of Starting mode of variable frequency starting by touch screen terminal MT sending controling instruction to PLC, PLC is by controlling DC relay device K ₁～K ₅adhesive and 485 communications realize four kinds of switchings between Starting mode.

5. motor multimode as claimed in claim 1 starts and switches teaching and skills training method, it is characterized in that, described soft initiator RQD is provided with the AC relay K being connected with control loop ₆, AC relay K ₉, AC relay K ₆be used for realizing soft initiator RQD bypass changeover, AC relay K ₉be used for realizing soft initiator RQD scram; Described frequency converter A FP is provided with the AC relay K being connected with control loop ₁₀, AC relay K ₁₀be used for realizing frequency converter A FP scram.

6. one kind is applicable to the device of above-mentioned motor multimode startup switching teaching and skills training method, it is characterized in that, comprise motor M, major loop, star delta reduced-voltage starting loop, soft initiator RQD, frequency converter A FP, control loop and PLC, described star delta reduced-voltage starting loop is by A.C. contactor KM ₁, KM ₂, KM ₃form with time relay KT; Described major loop is by the A.C. contactor KM in star delta reduced-voltage starting loop ₁m is connected with motor; Major loop is by the A.C. contactor KM in star delta reduced-voltage starting loop simultaneously ₁, KM ₂, KM ₃m is connected with motor; Major loop is by A.C. contactor KM simultaneously ₄rQD is connected with soft initiator, and soft initiator RQD is by A.C. contactor KM ₅m is connected with motor; Major loop is by A.C. contactor KM simultaneously ₆fP is connected with frequency converter A, and frequency converter A FP is by A.C. contactor KM ₇m is connected with motor; On described major loop, be also equiped with the three-phase combination table ZHB being connected with motor M, three-phase combination table ZHB is for gathering voltage, the electric current of motor M start-up course; On described motor M, have additional torque sensor CGQ, torque sensor CGQ is for gathering output torque, the rotating speed of motor M start-up course; Described control loop is connected with star delta reduced-voltage starting loop, soft initiator RQD, frequency converter A FP respectively; Described torque sensor CGQ is connected with PLC communication, described PLC is connected with frequency converter A FP, soft initiator RQD, three-phase combination table ZHB and touch screen terminal MT communication by 485 buses, and torque sensor CGQ, PLC, touch screen terminal MT are all connected with Switching Power Supply BC.

7. motor multimode as claimed in claim 6 starts and switches teaching and skills training device, it is characterized in that, the major loop three-phase supply A of described motor M, B, C respectively with major loop three-phase breaker QF ₁a terminal be connected, major loop three-phase breaker QF ₁the other end respectively with fuse FU ₁, FU ₂, FU ₃one end be connected, FU ₁, FU ₂, FU ₃the other end successively with A.C. contactor KM ₁auxiliary contact, electrothermal relay FR, motor M, A.C. contactor KM ₂auxiliary contact be connected; FU ₁, FU ₂, FU ₃the other end also successively with A.C. contactor KM ₄auxiliary contact connect after be connected with R, S, the T terminal of soft initiator RQD again; FU ₁, FU ₂, FU ₃the other end also successively with A.C. contactor KM ₆auxiliary contact connect after be connected with R, S, the T terminal of frequency converter A FP again; Meanwhile, FU ₁, FU ₂, FU ₃the other end also successively with A.C. contactor KM ₃auxiliary contact connect after again with A.C. contactor KM ₂auxiliary contact be connected;

Switching Power Supply air switch QF ₄be connected with L, the N terminal of Switching Power Supply BC; Three-phase combination table power switch QF ₅be connected with L, the N terminal of three-phase combination table ZHB; The I of three-phase combination table ZHB _a+terminal and mutual inductor C _ano. 1 terminal connect, I _a-terminal and mutual inductor C _ano. 2 terminals connect, I _b+terminal and mutual inductor C _bno. 1 terminal connect, I _b-terminal and mutual inductor C _bno. 2 terminals connect, I _c+terminal and mutual inductor C _cno. 1 terminal connect, I _c-terminal and mutual inductor C _cno. 2 terminals connect; Mutual inductor C _a, C _b, C _cbe connected on respectively A.C. contactor KM ₁auxiliary contact and electrothermal relay FR between A, B, C tri-phase connections on; The U of three-phase combination table ZHB _aterminal and A.C. contactor KM ₁no. 1 terminal be connected, U _bterminal and A.C. contactor KM ₁no. 2 terminals be connected, U _cterminal and A.C. contactor KM ₁no. 3 terminals be connected;

Button control relay K 7 auxiliary open point K 7-2 the other end of the soft starter start button SB 1 end, AC relay K 11 auxiliary open point K 11-1 of end, the soft starter stop button SB 2 end, drive forward the start button SB 3 end, AC relay K 13 auxiliary open point K 13-1 end, the drive reverse start button SB 4 end, AC relay K 14 auxiliary open point K 14-1 end, the drive stop button SB 5 end, AC relay K 10 auxiliary open point K 10- 1 end, direct start / stop button to start delta buck SB 7 end, direct start / delta down the start button SB 6 end, AC contactor KM 1 auxiliary prescription KM 1-1 end AC relay K 6 auxiliary open end point K 6-1 , the AC relay K 16 auxiliary closing point K 16-2 end, time relay KT auxiliary prescription KT - 1 end, AC contactor KM 3 auxiliary prescription KM 3-2 , the start-up mode selection knob SA 2 No. 1,3,5,7 terminals, AC relay K 17 auxiliary open point K 17-2 end, AC contactor KM 4 auxiliary prescription KM 4-1 of end, AC contactor KM 6 auxiliary prescription KM 6-1 end, the button control relay K 7 auxiliary open point K 7-3 end of the connection; soft start start button SB 1 the other end of the AC relay K 11 auxiliary open point K 11-1 other end of the AC relay K 9 auxiliary closing point K 9-1 end of the connection, communication relay K 9 auxiliary closing point K 9-1 the other end of the AC relay K 12 auxiliary closing point K 12-1 end of the connection, communication relay K 12 auxiliary closing point K 12-1 the other end of the AC contactor KM 4 auxiliary prescription KM 4-2 end of the connection, AC contactor KM 4 auxiliary prescription KM 4-2 the other end of the AC relay K 11 connect one end of the coil; soft start stop button SB 2 the other end of the AC relay K 12 coil connect one end, drive forward the start button SB 3 the other end of the AC relay K 13 auxiliary open point K 13-1 other end of the AC relay K 14 auxiliary closing point K 14-2 end of the connection, communication relay K 14 auxiliary closing point K 14-2 the other end of the AC relay K 15 auxiliary closing point K 15-1 end of the connection, communication relay K 15 auxiliary closing point K 15-1 the other end of the AC contactor KM 6 auxiliary prescription KM <end sub TranNum = "1330"> 6-2 connection, AC contactor KM 6 auxiliary prescription KM 6- 2 the other end of the AC relay K 13 connect one end of the coil; inverter reverse start button SB 4 the other end of the AC relay K 14 auxiliary open point K 14-1 other end of the AC relay K 13 auxiliary closing point K 13-2 end of the connection, communication relay K 13 auxiliary closing point K 13-2 the other end of the AC relay K 15 auxiliary closing point K 15-2 end of the connection, communication relay K 15 auxiliary closing point K 15-2 the other end of the AC contactor KM 6 auxiliary prescription KM 6-3 end of the connection, AC contactor KM 6 auxiliary prescription KM 6-3 the other end of the AC relay K 14 connect one end of the coil; inverter stop button SB 5 the other end of the AC relay K 10 auxiliary opening point K 10-1 other end of the AC relay K 15 connect one end of the coil; direct start / stop button to start delta buck SB 7 the other end of the AC relay K 18 connect one end of the coil, direct start / delta down the start button SB 6 the other end of the AC contactor KM 1 auxiliary prescription KM 1-1 other end of the AC relay K end 16 auxiliary open point K 16-1 , the AC relay K 17 auxiliary open point K 17-1 end of the connection, communication relay K 17 auxiliary open point K 17-1 the other end of the AC relay K 16 auxiliary open point K 16-1 other end of the AC relay K 18 auxiliary closing point K 18-1 end, AC relay K 6 auxiliary open point K 6-1 other end, direct start relay K 1 auxiliary open point K 1-1 other end, AC contactor KM 3 auxiliary closing point KM 3-1 end of the connection, communication relay K 18 auxiliary closing point K 18-1 the other end of the AC contactor KM end 1 coil connections, AC contactor KM 3 auxiliary closing point KM 3-1 the other end of the AC contactor KM 2 of One end of the coil, the coil end time relay KT connection; AC relay K 16 auxiliary closing point K 16-2 of other end of the AC contactor KM 2 auxiliary closing point KM 2-1 end, star delta starter relay K buck 2 auxiliary open point K 2-1 other end, AC contactor KM 3 end coil connections, AC contactor KM 2 auxiliary closing point KM 2-1 the other end and auxiliary relay KT open point KT - 1 other end, AC contactor KM 3 auxiliary prescription KM 3-2 the other end of the connection; frequency start relay K 4 auxiliary open point K 4 -1 the other end of the AC contactor KM end 4 coils, AC contactor KM 5 of One end of the coil, start-up mode selection knob SA 2 terminal connection on the 2nd, start-up mode selection knob SA 2 in the 4th terminal one end connected to the AC relay K 16 coil, start-up mode selection knob SA 2 terminal and exchange the 6th relay K <end sub TranNum = "1401"> 17 coil connections, start-up mode selection knob SA 2 in the 8th terminal and soft-start relay K 5 auxiliary open point K 5-1 other end, AC contactor KM 6 of One end of the coil, AC contactor KM end 7 coil connections, AC relay K 17 auxiliary open point K 17-2 the other end directly activated lights L 1 end of the connection, communication relay K 16 auxiliary open point K 16-3 the other end of the delta voltage starting lights L 2 the end of the connection, AC contactor KM 4 auxiliary prescription KM 4-1 the other end of the soft-start indicator L 3 end of the connection, AC contactor KM 6 auxiliary prescription KM 6-1 the other end of the soft-start indicator L 4 end of the connection, the button control relay K 7 auxiliary open point K 7-3 and place the other end of the control indicator L 5 end connection, touch screen control relay K 8 auxiliary open point K 8-3 the other end of the remote control indicator L 6 end of the connection;