Motor control refers to the control of starting, accelerating, running, decelerating and stopping the motor. Motor control has different requirements and purposes depending on the type of motor and the use of the motor. This article will introduce 12 common motor control circuits, including stator string resistance step-down start, extended-edge triangular step-down start, and star-delta step-down start.
1. Basic direct start control circuit
Press the start button, the KM coil is energized, the KM normally open auxiliary contact is self-locking, the green light is on, and the motor runs;
When the stop button is pressed, the KM coil loses its point, the auxiliary contact is reset, the red light is on, and the motor stops.
2 direct start, delay stop
The delay causes the loop to open by the action of the time relay.
3 control motor forward and reverse
Double interlocking with composite button and 2 contactors. The normally closed auxiliary contacts of the two contactors are connected in series with each other in the other circuit, which is safe and convenient, and avoids the occurrence of short circuit.
4 stop, reverse stop cycle
5 motor rotation cycle start
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