Non-spring return damper actuators shall be the direct- coupled type that requires no connecting linkages. The non-spring return actuators shall have a self-centering damper shaft coupling that assures concentric alignment of the actuator’s output coupling with the damper shaft and be capable of direct mounting to a shaft up to a 1-inch diameter.
Actuators shall provide stall protection throughout the full range of rotation. All non-spring return actuators shall be capable of both clockwise and counterclockwise operation. All actuators shall hold position in the event of a power failure. All actuators shall return to the 0 position in the event only the control signal is lost. All actuators shall provide a means of manually positioning the output coupling in the absence of power.
Dual independently adjustable auxiliary switches must be integral to the actuator. All actuators must be pre-cabled and provide an easily readable high contrast yellow on black position indicator. All actuators shall be UL873, CE and CSA22.2 listed and manufactured under ISO 9002 and ISO 14000 procedures.
Actuators shall be designed for a minimum of 60,000 full stroke cycles at the actuators rated torque and temperatures.
- Brushless DC Motor Technology
- Unique Self-Centering Shaft Coupling
- All Metal Housing
- Manual Override
- Offset and Span Adjustment Models Available
- Independently Adjustable Dual Auxiliary Switches Available