1High quality AC motor speed controller, stable performance. 2Professional manufacturing, exquisite workmanship, high reliability. 3Compact structure, durable and easy to use. 4Easy to operate and maintain, superior performance. 5Suitable for packaging industry, machine tool industry, transport equipment, textile machinery, automatic welding machine, automobile industry, elevator machinery, etc. Features: High quality AC motor speed controller, stable performance. Professional manufacturing, exquisite workmanship, high reliability. Compact structure, durable and easy to use. Easy to operate and maintain, superior performance. Suitable for packaging industry, machine tool industry, transport equipment, textile machinery, automatic welding machine, automobile industry, elevator machinery, etc. Specification: Condition: 100% brand new Interface form: 4.8 / EL / 5559 (Optional) Operating power supply: AC220V 50/60Hz, voltage fluctuation range plus or minus 10%Ue Rated power: 400W Using the environment: -10 to +50 Relative humidity: less than 90% Speed range: 90-1400r/min 50HZ, 90-1700r/min 60Hz Instructions: 1, turn off the power, according to the wiring diagram to connect and confirm the correct connection, do not modify arbitrarily; 2. Adjust the external speed knob to "0" before use to avoid causing instantaneous large current and damage to the controller. 3. This product adopts generator feedback voltage control, and the control line is divided into two lines: "blue" and "yellow". 4. If torque or speed of the governor is found to be not up to the requirements when the motor is connected, US-52 type side adjustment fine-tuning potentiometer (speed setting adjustment). 5.To change the running direction of the motor, simply install the jumper wires of "CCW" and "CW" on the wiring seat on the back of the controller. (When changing direction, the motor must be completely stopped before changing.) 1) select COM and CW short connection, then the motor will rotate clockwise; 2) select COM and CCW short connection, then the motor will rotate counterclockwise. 6. The action switch only controls the motor action or stop, and does not interrupt the power supply. Please turn off the power supply if it is not used for a long time. (hen changing direction, the motor must be completely stopped before changing.) Package List: 1 * Speed Controller Note: The governor has 6 lines respectively, the black line is the main line of the motor, the red and white are capacitor secondary lines, the blue is the speed regulating feedback line, the green line is the ground line.