Three-phase asynchronous motor continuous control circuit
Source: InternetPublisher:偷熊计划 Keywords: Control circuit three-phase asynchronous motor BSP Updated: 2021/03/23
The three-phase asynchronous motor continuous operation control circuit is shown in Figure 4-2.
Compared , three additional links are added: First, the auxiliary
moving contact KM of the contactor KM is connected
in parallel with the start button SB2. The function is to press the start button SB2, the contactor KM is energized, the motor M
starts and runs, and the KM auxiliary moving contact
in parallel
with SB2 is also closed. When the start button SB2 is released, KM still causes the contactor KM coil to continue When energized, the motor M continues to run continuously.
This effect is called "self-locking". The KM contact is called "self-locking". The second contact is to control
the motor to stop. A stop button SB1 is added. Press the stop button SB1. Cut off the control circuit, the main contact
of the contactor KM shoe L is disconnected, and the motor stops; thirdly, a thermal relay FR is added. When
the motor is overloaded and heats up, after a period of time, its moving contact is disconnected, the control circuit is cut off , and the contact The main contact of the device
KM is disconnected and the motor stops.
- Perform surgery on the speaker protection circuit
- Motor control circuit for starting and running without phase loss
- Design and production of radio remote control fan stepless speed regulator
- Homemade short circuit alarm device
- Ultra-short wave item left behind reminder alarm
- "Watchdog" anti-theft alarm circuit
- Large range laser burglar alarm
- Multi-channel laser anti-theft alarm circuit
- High-sensitivity and high-loudness burglar alarm circuit
- Add a breeze block to your remote control wall fan
- Homemade disinfectant circuit
- Fish farming thermostatic control circuit
- Greenhouse temperature control circuit
- Junction field effect transistor mixer circuit
- Proportional frequency discriminator circuit
- Parallel crystal oscillator
- Capacitive feedback oscillator circuit
- Voltage series negative feedback amplifier circuit
- color discrimination circuit
- Digital stopwatch display circuit