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Motor protector circuit diagram 18

2016-09-01 06:56  
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Motor protector circuit diagram 18
The motor protection circuit is composed of the power circuit, phase sequence detection circuit, monostable circuit and control implementation circuit, the circuit is shown as the chart. Power circuit is composed of the power transformer T, rectifier diodes VD1, VD2, capacitors C1, C2, and three-terminal voltage regulator integrated circuit IC1. Phase sequence detection circuit is composed of the diodes VD3 ~ VD5, resistors R1 ~ RIO, capacitor C6, four NAND gate Schmitt trigger integrated circuit IC2 (D1 ~ D4) and dual JK master-slave flip-flop integrated circuit IC3. Monostable circuit is composed of the resistors R11 ~ R13, capacitors C3 ~ C5 and time-based integrated circuit IC4. Control implementation circuit is composed of the resistor R14, transistor V, diode VD6 and relay K and other components. Knife switch Q, fuse FU, AC contactor KM and KR form the origin control circuit of motor M .