Great Motor Starter Control Circuit
The electrician knows to connect all the nc overload contacts that the starter is designed for in series if there is more than one on the starter.
Motor starter control circuit. Then it shifts the starter motor pinion gear into mesh with the ring gear. Motor starter control basics what is a motor starter. It does not drop out at low values of field current on the shunt.
This type of starter cannot be used for a series machine. An overload marked this way indicates that the circuit is correct for any motor or starter used. Control devices are connected between l1 and the operating coil or load.
The ability to switch off the power and isolate allows maintenance and repair work on the motor driven equipment or its starter components to be carried out safely. It closes the circuit between the battery and the starter motor. Operating coils of contactors and starters are activated by control devices such as pushbuttons limit switches and pressure switches.
However manufacturers offer. The primary purpose of a motor starter is to start and stop a motor which it is connected to safely. The disadvantage of this type of starter is that it may drop out if field resistance control is used to weaken the field for increased motor speed.
Here the electromagnet is connected directly across the line voltage. The solenoid switch on a starter motor performs two functions. Figure 3 shows a four point starter circuit diagram.