rotary damper actuator

Product Description

KDA*2 ON/OFF Type Damper Actuator; rotary damper actuator (2, 4, 6, 8Nm) Description KDA*2 on/off type damper actuator uses bi-directional motor to control the damper. They are widely applied for damper controls of HAVC systems and water systems, and also used for controlling global valve. Characteristics l High dependable performance 1. KDA*2 on/off type damper actuator uses bi-directional magnetic clutch synchronous motor. It has overload protection function, and does not need limitator switch. The actuator will stop automatically, because the motor is clutched when it is operator to the end. And the damper actuator has a better precision adjustable mechanical limitator, and 1~2 auxiliary switches can be selected for optional. 2. Adjustable limitator with precision of *0°. 3. Optional overtime protection for longer motor life. 4. 1 or 2 optional auxiliary switch (es), the function of which can be made by order. The operational angle of the damper actuator which has 2 limitators can be adjusted by setting the peak turnplate. The adjustable feedback position is larger than *0°on clockwise, and small than *0°on anti-clockwise. Please find the installation details at Fig.4. The default setting of one switch type is at *0°, and that of two switches type is at 0°and *0°. 5. The *4 volt DC self-setting function is only for *4 volt AC damper actuator. It can supply enough power to let the damper actuator go back to 0°, when power supply is suddenly cut off. l Simple and convenient function testing It is also convenient to test the function of damper operation: press the manual on the actuator, the gearings inside the actuator will break away. The damper can be operated manually when keep pressing the manual . Please do not operate when power on！ l Simple installation Fix the damper actuator on the damper shaft by universal holder. (Various special actuator holding bracket can be supplied according to customers’ requirements.)