Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

Secondary circuit diagram of single-button start and stopPhysical wiring diagramCircuit diagramWorking Principle:1. Close QF to connect the power supply. Press SB, and the relay KA1 is energized and pulled in. The normally open contact of KA1 is closed, the coil of the AC contactor KM is energized, KM is pulled in and self-locked. The motor operates.2. The normally open contact of KM is closed, and the normally closed contact is disconnected. At this time, the coil of the relay KA2 cannot be ene

Three-phase asynchronous motor jogging forward and reverse secondary control circuitPhysical wiring diagramCircuit diagramWorking Principle:After closing the circuit breaker QF to connect the power supply, when the SB1 start button is pressed, the current passes through the normally closed point of KM2 to supply power to the KM1 coil, causing the main contact of KM1 to close and the motor to run forward. Once the SB1 button is released, the motor stops immediately.During the forward rotation of

Simple overall wiring for self-locking control of motor operation and fault analysisPhysical wiring diagramCircuit diagramWorking Principle and Fault Analysis:1. Close QF1 and QF2 to conduct the power supply. Press the jog button SB2. The AC contactor KM coil gets electricity. The main contact closes and the auxiliary contact closes to conduct the power supply. The KM self-locking three-phase asynchronous motor starts to run.2. Release the SB1 button. The AC contactor coil loses electricity. The

The secondary control circuit of the intermediate relay self-locking1、Physical wiring diagram&Circuit diagram2、Operation principle Close QF to connect the power supply. Press the start button SB2, the coil of the intermediate relay gets electricity. The normally open contact 9-5 is closed to conduct the power supply. The intermediate relay is self-locked and the load starts to operate. Press the stop button SB1, the coil of the intermediate relay loses electricity. The normally open contact

Physical diagram of interlock of 14-pin intermediate relayThe circuit diagram of interlock for 14-pin intermediate relays

How to wire a six-wire motor?

Wiring method of motor open-phase protection