The Belimo SFA-S2 is a high-performance rotary actuator designed for adjusting dampers in technical building installations. It is perfect for controlling air dampers up to approximately 4 m², ensuring reliable and efficient operation in various applications. Click here for the technical data PDF Simple Direct Mounting: This actuator offers straightforward, direct mounting on the damper shaft using a universal shaft clamp. It is supplied with an anti-rotation device to prevent the actuator from rotating, ensuring stable and reliable operation. Manual Override: The SFA-S2 features a manual override function that allows the damper to be manually actuated using a hand crank. The damper can be engaged with the locking switch at any position, which can then be unlocked manually or automatically by applying the operating voltage. Adjustable Angle of Rotation: The angle of rotation can be adjusted with mechanical end stops, providing flexibility and precision in damper control. High Functional Reliability: This actuator is overload protected and does not require limit switches, as it automatically stops when the end stop is reached, ensuring high functional reliability. Flexible Signalling: The actuator includes one auxiliary switch with a fixed setting and one adjustable auxiliary switch. These switches allow for signalling at a 10% or 11...100% angle of rotation, providing versatile feedback options for various applications. Electrical Accessories: Auxiliary Switch: 2x SPDT S2A-F Feedback Potentiometer: 1 kΩ P1000A-F Mechanical Accessories: Shaft Extension: 240 mm ø20 mm for damper shaft ø8...22.7 mm AV8-25 End Stop Indicator: IND-AFB Shaft Clamp: Reversible, for central mounting, for damper shafts ø12.7 / 19.0 / 25.4 mm K7-2 Ball Joint: Suitable for damper crank arm KH8 / KH10 KG10A Damper Crank Arm: Slot width 8.2 mm, clamping range ø10...18 mm KH8 Actuator Arm: For 3/4" shafts, clamping range ø10...22 mm, Slot width 8.2 mm KH-AFB Form Fit Insert: Available in various sizes (10x10 mm, 12x12 mm, 15x15 mm, 16x16 mm) Mounting Kit: For linkage operation, for flat and side installation ZG-AFB Baseplate Extension: Z-SF Anti-Rotation Mechanism: 230 mm, Multipack 20 pcs. Z-ARS230L Hand Crank: 63 mm ZKN2-B Electrical Data Nominal Voltage: AC 24...240 V / DC 24...125 V Nominal Voltage Frequency: 50/60 Hz Nominal Voltage Range: AC 19.2...264 V / DC 21.6...137.5 V Power Consumption in Operation: 7 W Power Consumption in Rest Position: 3.5 W Power Consumption for Wire Sizing: 18 VA Auxiliary Switch: 2x SPDT, 1x 10% / 1x 11...100% Switching Capacity Auxiliary Switch: 1 mA...3 A (0.5 A inductive), DC 5 V...AC 250 V Connection Supply / Control: Cable 1 m, 2x 0.75 mm² Connection Auxiliary Switch: Cable 1 m, 6x 0.75 mm² Parallel Operation: Yes (note the performance data) Functional Data Torque Motor: 20 Nm Torque Fail-Safe: 20 Nm Direction of Motion Motor: Selectable by mounting L/R Direction of Motion Fail-Safe: Selectable by mounting L/R Manual Override: By means of hand crank and locking switch Angle of Rotation: Max. 95° Angle of Rotation Note: Can be limited by the adjustable mechanical end stop Running Time Motor: 75 s / 90° Running Time Fail-Safe:
Related
Related
Related
Related