Yarn detection and control circuit of strength tester
A technology of detection control and power machine, applied in the direction of AC motor control, control system, electrical components, etc., can solve the problems of low versatility, high replacement cost, cumbersome maintenance and replacement of DC motors, etc., achieve convenient maintenance, reduce failure rate, The effect of resolving generality
Inactive Publication Date: 2014-08-27
JIHUA 3542 TEXTILE CO LTD
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AI Technical Summary
Problems solved by technology
[0002] The existing YG021A single yarn strength machine uses a 220V AC power supply and is driven by a DC motor. The speed regulation part is controlled by a calculus circuit. On the one hand, the DC motor has low versatility and high replacement costs.
On the other hand, there are many components in the calculus speed control circuit, and the maintenance and replacement are cumbersome.
Method used
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Embodiment Construction
[0014] Embodiments of the present invention refer to the appended figure 1 (The circuit structure diagram is not shown): 220V mains live wire L and neutral wire N pass through the circuit breaker QF, and one line is connected in parallel with the inverter U1, the forward rotation contactor KM1 normally open contact KM1-1 and the motor M1, and the forward rotation contact The normally open contact KM1-1 of the reverse contactor is interlocked with the normally open contact KM2-1 of the reversing contactor; the other is connected to the input terminal of the switching power supply AC / DC module, and the output terminal of the switching power supply AC / DC module (DC 24V voltage) The positive and negative poles are respectively connected in parallel with the power indicator light HL.
[0015] The main circuit of the switching power supply AC / DC module of the present invention is composed of an input electromagnetic interference filter EMI, a rectification filter circuit, a power co...
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The invention provides a yarn detection and control circuit of a strength tester. The yarn detection and control circuit is characterized in that 220V mains supply power lines L and N are connected with a frequency inverter U1, a normally-open contact KM1-1 of a forward contactor KM1 and a motor M1 in parallel through one path of a breaker QF; the normally-open contact KM1-1 of the forward contactor is connected with a normally-open contact KM2-1 of a reverse contactor in an interlocking mode; the other path of the breaker QF is connected with the input end of a switching power supply AC / DC module, and the positive pole and the negative pole of the output end of the switching power supply AC / DC module are connected with a power indicator HL in parallel; the output end of the switching power supply AC / DC module is provided with the positive pole and the negative pole, and the positive pole of the output end of the switching power supply AC / DC module passes through a stop switch SA1; a first control circuit controls chucks of the YG021A strength tester to descend; a second control circuit controls the chucks of the strength tester to ascend; a third control circuit controls the yarn breaking chucks of the strength tester to stop.
Description
technical field [0001] The invention relates to a textile electric detection control circuit, in particular to a strength machine yarn detection control circuit. Background technique [0002] The existing YG021A single yarn strength machine is powered by 220V AC, driven by a DC motor, and the speed regulation part is controlled by a calculus circuit. On the one hand, the versatility of the DC motor is low, and the replacement cost is high. On the other hand, there are many components in the calculus speed regulating circuit, and the maintenance and replacement are cumbersome. Therefore, to solve the YG021A single yarn strength machine circuit control system, make full use of the peripheral sensors of the original equipment to reset the control circuit, complete all the actions of the existing YG021A single yarn strength machine, and eliminate the aging hidden dangers of circuit components, reduce the failure rate, and achieve The driving of the circuit is particularly impor...
Claims
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IPC IPC(8): H02P27/04
Inventor 黄辉吴华军王平
Owner JIHUA 3542 TEXTILE CO LTD