A kind of multichannel delayed startup control device
Technical field
A kind of multichannel delayed startup of the utility model control device belongs to the electric machines control technology field, is specifically related to a kind of control device of realizing the multiple electric motors delayed startup.
Background technology
A lot of equipment in the commercial Application all comprise multiple electric motors, during device start, for preventing the starting current stack, form hard pulse and damage power supply and working line, and the multiple electric motors of these equipment can not start simultaneously in the practical application.
Utilization at present extensively can realize that the method for multiple electric motors sequence starting comprises: manually control and PLC control; When adopting the sequence starting of PLC control multiple electric motors, because the program composition more complicated of PLC, maintenance and programming need higher technical support, therefore operating personnel's specialty are had relatively high expectations, and the back maintenance difficulty that breaks down is bigger, and it is too high to control cost.
The utility model content
A kind of multichannel delayed startup of the utility model control device, technical problem to be solved is: a kind of control device of realizing the multiple electric motors delayed startup is provided.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of multichannel delayed startup control device comprises push-button switch, A.C. contactor, the time relay and indicator light;
The coil CJ1-1 of A.C. contactor CJ1, its normally opened contact CJ1-2, main contacts CJ1-3;
The coil CJ2-1 of A.C. contactor CJ2, its main contacts CJ2-3;
The coil CJ3-1 of A.C. contactor CJ3, its main contacts CJ3-3;
The coil SJ1-1 of time relay sj 1, its time-delay normally opened contact SJ1-2;
The coil SJ2-1 of time relay sj 2, its time-delay normally opened contact SJ2-2.
In the motor main circuit; The end of incoming cables of knife switch DK1 links to each other with three phase mains, the end of incoming cables of the main contacts CJ1-3 of A.C. contactor CJ1 and connect the end of incoming cables of main contacts CJ3-3 of end of incoming cables and A.C. contactor CJ3 of main contacts CJ2-3 of A.C. contactor CJ2 after link to each other with the leading-out terminal of knife switch DK1; The leading-out terminal of the main contacts CJ1-3 of A.C. contactor CJ1 links to each other with the power port of motor M 1; The leading-out terminal of the main contacts CJ2-3 of A.C. contactor CJ2 links to each other with the power port of motor M 2, and the leading-out terminal of the main contacts CJ3-3 of A.C. contactor CJ3 links to each other with the power port of motor M 3.
In the control circuit; Link to each other with the end of incoming cables of fuse BX2 behind the coil CJ1-1 that the end of incoming cables of fuse BX1 links to each other with the power end of control circuit positive pole, the leading-out terminal of fuse BX1 is connected in series start button AQ2, stop button AT1, A.C. contactor CJ1 successively; The leading-out terminal of fuse BX2 links to each other with the power end negative pole of control circuit, and the two ends of said start button AQ2 also are connected to the normally opened contact CJ1-2 of A.C. contactor CJ1.
The coil SJ1-1 of time relay sj 1 is attempted by the two ends of the coil CJ1-1 of A.C. contactor CJ1, and indicator light HD1 is attempted by the two ends of the coil SJ1-1 of time relay sj 1.
The end of incoming cables of the time-delay normally opened contact SJ1-2 of time relay sj 1 links to each other with the end of incoming cables of the coil CJ1-1 of A.C. contactor CJ1; The leading-out terminal of the time-delay normally opened contact SJ1-2 of time relay sj 1 also connects end of incoming cables and the input of indicator light HD2 of coil SJ2-1 of end of incoming cables, the time relay sj 2 of the coil CJ2-1 of A.C. contactor CJ2, and the leading-out terminal of the leading-out terminal of the coil CJ2-1 of said A.C. contactor CJ2, the coil SJ2-1 of time relay sj 2 and the output of indicator light HD2 also connect the back and link to each other with the leading-out terminal of the coil CJ1-1 of A.C. contactor CJ1.
The end of incoming cables of the time-delay normally opened contact SJ2-2 of time relay sj 2 links to each other with the end of incoming cables of the coil CJ1-1 of A.C. contactor CJ1; The leading-out terminal of the time-delay normally opened contact SJ2-2 of time relay sj 2 also connects end of incoming cables and the input of indicator light HD3 of the coil CJ3-1 of A.C. contactor CJ3, and the leading-out terminal of the coil CJ3-1 of said A.C. contactor CJ3 is with the output of indicator light HD3 and connect the back and link to each other with the leading-out terminal of the coil CJ1-1 of A.C. contactor CJ1.
The beneficial effect that the utility model compared with prior art has is: adopt components and parts such as the traditional A.C. contactor and the time relay to constitute a complete multichannel delayed startup control device; Simple in structure, cost is lower, and reliability is high; Easy to maintenance; Favorable expandability, can be as requested in the practical application expansion control circuit arbitrarily, realize the delayed startup of multiple electric motors.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation:
Fig. 1 is the main circuit diagram of motor in the utility model;
Fig. 2 is the control circuit figure of motor in the utility model.
Embodiment
As depicted in figs. 1 and 2, a kind of multichannel delayed startup of the utility model control device comprises: push-button switch, A.C. contactor, the time relay and indicator light.
The coil CJ1-1 of A.C. contactor CJ1, its normally opened contact CJ1-2, main contacts CJ1-3;
The coil CJ2-1 of A.C. contactor CJ2, its main contacts CJ2-3;
The coil CJ3-1 of A.C. contactor CJ3, its main contacts CJ3-3;
The coil SJ1-1 of time relay sj 1, its time-delay normally opened contact SJ1-2;
The coil SJ2-1 of time relay sj 2, its time-delay normally opened contact SJ2-2.
In the motor main circuit; The end of incoming cables of knife switch DK1 links to each other with A, B, C three phase mains, the end of incoming cables of the main contacts CJ1-3 of A.C. contactor CJ1 and connect the end of incoming cables of main contacts CJ3-3 of end of incoming cables and A.C. contactor CJ3 of main contacts CJ2-3 of A.C. contactor CJ2 after link to each other with the leading-out terminal of knife switch DK1; The leading-out terminal of the main contacts CJ1-3 of A.C. contactor CJ1 links to each other with the power port of motor M 1; The leading-out terminal of the main contacts CJ2-3 of A.C. contactor CJ2 links to each other with the power port of motor M 2, and the leading-out terminal of the main contacts CJ3-3 of A.C. contactor CJ3 links to each other with the power port of motor M 3; Knife switch DK1 when the motor main circuit breaks down, manually breaks off knife switch DK1 as the master switch of motor main circuit, cuts off the power supply input of motor main circuit, but the safety inspection working line.
In the control circuit; Link to each other with the end of incoming cables of fuse BX2 behind the coil CJ1-1 that the end of incoming cables of fuse BX1 links to each other with the power end of control circuit positive pole, the leading-out terminal of fuse BX1 is connected in series start button AQ2, stop button AT1, A.C. contactor CJ1 successively; The leading-out terminal of fuse BX2 links to each other with the power end negative pole of control circuit, and the two ends of said start button AQ2 also are connected to the normally opened contact CJ1-2 of A.C. contactor CJ1; The power end of above-mentioned control circuit can with knife switch DK1 leading-out terminal three-phase AC line in any two link to each other.
The coil SJ1-1 of time relay sj 1 is attempted by the two ends of the coil CJ1-1 of A.C. contactor CJ1, and indicator light HD1 is attempted by the two ends of the coil SJ1-1 of time relay sj 1.
The end of incoming cables of the time-delay normally opened contact SJ1-2 of time relay sj 1 links to each other with the end of incoming cables of the coil CJ1-1 of A.C. contactor CJ1; The leading-out terminal of the time-delay normally opened contact SJ1-2 of time relay sj 1 also connects end of incoming cables and the input of indicator light HD2 of coil SJ2-1 of end of incoming cables, the time relay sj 2 of the coil CJ2-1 of A.C. contactor CJ2, and the leading-out terminal of the leading-out terminal of the coil CJ2-1 of said A.C. contactor CJ2, the coil SJ2-1 of time relay sj 2 and the output of indicator light HD2 also connect the back and link to each other with the leading-out terminal of the coil CJ1-1 of A.C. contactor CJ1.
The end of incoming cables of the time-delay normally opened contact SJ2-2 of time relay sj 2 links to each other with the end of incoming cables of the coil CJ1-1 of A.C. contactor CJ1; The leading-out terminal of the time-delay normally opened contact SJ2-2 of time relay sj 2 also connects end of incoming cables and the input of indicator light HD3 of the coil CJ3-1 of A.C. contactor CJ3, and the leading-out terminal of the coil CJ3-1 of said A.C. contactor CJ3 is with the output of indicator light HD3 and connect the back and link to each other with the leading-out terminal of the coil CJ1-1 of A.C. contactor CJ1.
In the utility model, closed knife switch DK1, conducting motor main circuit; Press start button AQ2; Turn-on control circuit, the main contacts CJ1-3 adhesive of A.C. contactor CJ1, motor M 1 starts operation; The indicator light HD1 of indication motor M1 running status is bright, the timing of the coil SJ1-1 of time relay sj 1 energising simultaneously; The timing time of relay SJ1 arrives when the time; The time-delay normally opened contact SJ1-2 of time relay sj 1 is closed; The main contacts CJ2-3 adhesive of A.C. contactor CJ2; Motor M 2 starts operation, and the indicator light HD2 of indication motor M2 running status is bright, the timing of the coil SJ2-1 of time relay sj 2 energising simultaneously; The timing time of relay SJ2 arrives when the time, and the time-delay normally opened contact SJ2-2 of time relay sj 2 is closed, the main contacts CJ3-3 adhesive of A.C. contactor CJ3, and motor M 3 starts operation, and the indicator light HD3 of indication motor M3 running status is bright; Motor M 1, M2, M3 realize the time-delay sequence starting.
When needs stop entire circuit, press stop button AT1, cut off the power supply of control circuit, all motors in the motor main circuit are out of service, protection equipment Electrical Safety.
Above-mentioned embodiment realizes that preferably the circuit of No. three motors time-delay sequence starting is as embodiment; And the course of work of circuit described in detail; Those skilled in the art's expanded circuit as required in the practical application; According to the delay time that the time relay is set, the multiple electric motors time-delay sequence starting in the realization equipment.