What should I pay attention to for DC geared motor start-up control?

The operation of DC gear motor is very important, and the correct operation can ensure the better operation of the motor. Therefore, we should operate the machine in accordance with the relevant procedures, especially its start-up control needs extra attention. Today, we would like to introduce some issues that need attention for the equipment start-up control

1. Wiring of the motor

Power plants generally use parallel excitation type, armature terminals for H1 and H2, parallel excitation winding terminals for B1 and B2. its wiring is H1, B1 connected to the positive DC power supply, H2 connected to B2 connected to the negative DC power supply.

2. Reduce the starting current

In general, in addition to direct start less than 4KW DC buck motor, all equipment should be started to reduce the starting current to less than 2 times the rated motor current. In order to reduce the starting current, the starting current is generally limited by the starting resistor in the armature circuit when the motor is started, or by reducing the starting voltage of the motor when the motor is started. Since the starting resistor is connected in the armature circuit, the equipment is simple, economical and reliable, so it has been widely used.

3. DC contactor coil problem

For DC contactors used in operation, the contactor coil should be able to run for a long time. And for CZ0 series contactors, they all run for a short time, so as a long time running contactor, the coil cannot be burned, so, after starting, a running contactor should be given a series connection with a resistance of about 150W and 1000Ω to prevent coil burnout accidents.

4. DC current measurement

For its measurement, the general use of split type, in the main circuit is divided into 100A, 75MV split, split positive and negative connection 75MV 0 ∽ 100A amperometer.

5. DC step-down motor with series resistance to reduce the principle of starting current wiring diagram

The above is about the DC gear motor starting control need to pay attention to the place, I hope it can bring help, more related information welcome to consult Vshida micro motor at any time!