1. Reverse switch forward and reverse control circuit diagram
The reverse switch is directly connected to the main circuit and is not suitable for large-capacity motor control. It is generally used in small-capacity motor control circuits with a rated current of 10A and a power of 3kW or less.
2. Contactor interlocking forward and reverse control circuit diagram
Two contactors KM1 and KM2 are connected to the main circuit of the contactor interlocking forward and reverse control circuit, which is safe and reliable.
3. Button interlocking forward and reverse control circuit
Contactor interlocking forward and reverse control circuit When controlling the motor from forward rotation to reverse rotation, you need to press the stop button first, and then press the reverse button, so the operation is more inconvenient. It is more inconvenient to use the button interlocking forward and reverse control circuit This inconvenience can be avoided.
The circuit uses two composite buttons SB1 and SB2. SB1 replaces the normally closed auxiliary contacts of the forward button and the reverse contactor, and SB2 replaces the normally closed auxiliary contacts of the reverse button and the forward contactor.
4. Button and contactor double interlocking forward and reverse control circuit
The button and contactor double interlocking forward and reverse control circuit can effectively solve the problem that the button interlocking forward and reverse control circuit is prone to short-circuit of the two-phase power supply.
On the basis of the button interlocking forward and reverse control circuit, the normally closed auxiliary contacts of the two contactors are connected in series with the coil of the other side, so that the button interlocking and the contactor interlocking double protection are realized.
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