Commonly used single-phase motors are generally divided into three-wire and four-wire products. The running winding of the four-wire motor is directly out of line, and the starting winding is connected to the capacitor after the line is out. The common joint of the running winding and the starting winding of the three-wire motor is connected to the outgoing wire. In the motor positive and negative modules, the appearance of terminal blocks optimizes the wiring method. Commonly used motor terminal blocks include plug-in, spring-type, direct-welding and barrier-type terminal blocks. These four categories belong to the circuit board terminal block (also known as PCB terminal).

The terminal selected above is the neutral direct welding terminal LG500H-5.0. The prismatic end of the solder pin of the modified series terminal shrinks and becomes thinner. When inserted into the solder hole, it can prevent random rotation and use the solder solution to enter the solder hole. In addition, the terminal structure of this series is quite compact, using the lifting principle of the clamp body to ensure reliable wiring and large wiring capacity.

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1. Three-phase AC motor forward and reverse control solid state relay module, the internal is a highly reliable triple interlock design. There are three-phase two-controller (built-in four-way SCR), three-phase three-controller (built-in five-way SCR).

2. The module adopts microprocessor intelligent control and SMT patch technology. In addition to the hardware and software positive and negative interlocks at the input control end, the positive and negative interlocks are also set at the strong current output end.

3. The module is also equipped with a positive and negative interlock at the strong current output. When the A-channel control signal is cancelled and the A-channel thyristor should be disconnected but not disconnected in time, the B-channel thyristor will not be immediately disconnected even if there is a control signal Connected, only after A is completely disconnected, then B is connected, and vice versa.

4. The module has a built-in input protection circuit. When the 380Vac power is not connected, even if there is a control signal at the input terminal, it will not trigger the thyristor to conduct. Only after the main circuit is powered on, the input terminal officially starts to accept the command of the control signal.

5. The output terminal and the input control terminal are photoelectrically isolated, and each internal thyristor has a built-in RC absorption circuit, no external connection is required.

6. The module has two LED light-emitting tubes to display the direction of motor rotation, and another LED power indicator.

7. The wide range of control voltage is 12-24Vdc, the working current is about 25-45mA, and other voltages can also be customized. The input common anode or common cathode can be wired at will, and the control current is about 3mA.

8. The module has a 380V power-on protection circuit, no surge impact, and strong anti-interference ability. The thyristor adopts DCB ceramic substrate, and the current specification is 15A-90A.