How to realize forward and reverse rotation of single-phase 220v motor and how to wire it? What is the working principle?

Just switch the outlet end of any winding; Capacitors or resistor strings are used to function as induction starting windings.

After starting, it can be retained (called capacitive starting motor) or removed as needed (called capacitive starting motor, which is executed by centrifugal switch placed inside the motor). If you need to change the direction of the motor, you only need to switch the outlet end of any winding, and the current phase relationship between the two windings is opposite.

Single-phase motor uses capacitor or resistor string to shift phase in inductive starting winding, which makes the current phases of starting winding and working winding stagger, which is called "phase separation".

Extended data:

Motor forward and reverse rotation requirements:

1. When the positive contactor KM 1 coil is energized, the auxiliary normally closed contact of KM 1 disconnects the loop of the KM2 coil. If KM 1 is energized, it must be powered off and released first, and its auxiliary normally closed contacts are reset.

2. After the motor is started forward (or backward), you don't need to press the stop button to stop the motor first, but you can directly press the reverse (or forward) start button to make the motor run in reverse.

3. When SB2 is pressed, only the coil of contactor KM2 is energized and KM 1 is de-energized; When SB3 is pressed, only the coil of contactor KM 1 can be energized, while K2 is de-energized; If you press SB2 and SB3 at the same time, neither contactor coil can be energized. This has played an interlocking role.

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