200A 200B DC speed control board speed adjust board for bag making machine 12 volt 18v 24v dc motor speed controller

Brief Introduction

Small power DC speed control board 200A/200B of DC machinery is an appliance that adopts a silicon-controlled rectifier triggers circuit to realize adjusting voltage. It has the advantages of low price, steady technology, and high accuracy of adjusting speed. It is an extensive application on mechanical devices that need adjusting speed such as papermaking, rubber, food, printing, and metallurgy industry. The electric circuit has negative feedback of voltage, lead flow protection, and soft start, to work stably. 

Working Principle

The DC speed control board is a device to adjust the speed of the dc motor. The upper end is connected to the AC power supply, and the lower end is connected to the DC motor. The DC speed control board converts the AC power into two output DC power sources, one input to the DC motor magnetization (stator), and one output Input to the armature (rotor) of the DC motor, and the DC speed control board adjusts the speed of the DC motor by controlling the DC voltage of the armature. At the same time, the DC motor gives a feedback current to the speed control board, and the speed control board judges the speed of the DC motor according to the feedback current, and corrects the armature voltage output if necessary, so as to adjust the speed of the motor again.

Main Features

1. Realize step-less speed regulation with thyristor trigger
2. Introduce voltage negative feedback technology to make the speed more stable
3. With over-current and short-circuit protection devices to make the performance more reliable
4. With a soft start device to eliminate the excessive starting current of the motor
5. Equipped with a flexible multi-function interface

Technical Parameters

+12V: shared 100mA, +12V DC power supply;
0V: 100mA power ground;
ING: single speed enable terminal, connected to digital signals such as photoelectric switches, default low-level operation, and the speed is controlled by an external 4K7 potentiometer
Setting;
INW: It can be connected with analog signals such as displacement controllers for compensation control.
CP: Analog signal input such as PLC digital quantity or potentiometer;
F1, F2: output DC200V excitation;
H1, C2: DC motor armature;
220V: AC220V 50HZ power input.

Wiring method and description

1. Adjust speed directly

Note: After the 0V and ING terminals are short-circuited, only one external 4K7 potentiometer is needed to control the motor speed.

Please choose your preferred single-turn/multi-turn potentiometer according to your needs.

2. Controlled by displacement controller

Note: The 4K7 main potentiometer controls the maximum speed, and the external displacement controller is used for compensation control. For example, if it is used on a bag making machine with a pressing rod/swing arm, it can achieve automatic stepless speed regulation.

(click the link for more information about displacement controllers 3/4 wires)

3. Controlled by photoelectric sensor switch