Spring Return Rotary Fail-Safe Actuator

Modulating rotary actuator fail-safe for adjusting dampers in technical building installations

• Air damper size up to approx. 0.5 m²
• Torque motor 2.5 Nm
• Nominal voltage AC 100...240 V
• Control modulating 2...10 V
• Position feedback 2...10 V

Product features

Mode of operation

The actuator is connected with a standard control signal of 0...10 V and moves the damper to the operating position at the same time as tensioning the return spring. The damper is turned back to the fail-safe position by spring force when the supply voltage is interrupted.

Simple direct mounting

Simple direct mounting on the damper shaft with a universal shaft clamp, supplied with an antirotation device to prevent the actuator from rotating

Adjustable angle of rotation

Adjustable angle of rotation with mechanical end stops.

High functional reliability

The actuator is overload protected, requires no limit switches and automatically stops when the end stop is reached.