Description
The Belimo SM24A-SR is a high-performance modulating damper actuator designed for precise control in technical building installations. This robust actuator is perfect for air dampers up to approximately 4 m², ensuring reliable and efficient performance.
Electrical Data:
- Nominal Voltage: AC/DC 24 V
- Nominal Voltage Frequency: 50/60 Hz
- Nominal Voltage Range: AC 19.2...28.8 V / DC 19.2...28.8 V
- Power Consumption in Operation: 2 W
- Power Consumption in Rest Position: 0.4 W
- Power Consumption for Wire Sizing: 4 VA
- Connection Supply / Control: Cable 1 m, 4x 0.75 mm²
- Parallel Operation: Yes (note the performance data)
Functional Data:
- Torque Motor: 20 Nm
- Operating Range Y: 2...10 V
- Input Impedance: 100 kΩ
- Position Feedback U: 2...10 V
- Position Feedback U Note: Max. 1 mA
- Position Accuracy: ±5%
- Direction of Motion Motor: Selectable with switch 0/1
- Direction of Motion Note: Y = 0 V: At switch position 0 (ccw rotation) / 1 (cw rotation)
- Manual Override: With push-button, can be locked
- Angle of Rotation: Max. 95°
- Angle of Rotation Note: Can be limited on both sides with adjustable mechanical end stops
- Running Time Motor: 150 s / 90°
- Sound Power Level: 45 dB(A)
- Mechanical Interface: Universal shaft clamp reversible 10...20 mm
- Position Indication: Mechanical, pluggable
Safety Data:
Protection Class IEC/EN: III, Safety Extra-Low Voltage (SELV)
Power Source UL: Class 2 Supply
Degree of Protection IEC/EN: IP54
Degree of Protection NEMA/UL: NEMA 2
Enclosure UL: Enclosure Type 2
EMC: CE according to 2014/30/EU
Low Voltage Directive: CE according to 2006/95/EC
Certification IEC/EN: IEC/EN 60730-1 and IEC/EN 60730-2-14
UL Approval: cULus according to UL60730-1A, UL60730-2-14 and CAN/CSA E60730-1
Environmental Data:
- Hygiene Test: According to VDI 6022 Part 1 / SWKI VA 104-01, cleanable and disinfectable, low-emission
- Type of Action: Type 1
- Rated Impulse Voltage Supply / Control: 0.8 kV
- Pollution Degree: 3
- Ambient Humidity Max.: 95% RH, non-condensing
- Ambient Temperature: -30...50°C [-22...122°F]
- Storage Temperature: -40...80°C [-40...176°F]
- Servicing: Maintenance-free
- Weight: 0.95 kg
Operating Mode: The actuator connects with a standard control signal of 0...10 V, driving to the position defined by the control signal. The measuring voltage U serves for the electrical display of the damper position 0...100% and as a control signal for other actuators.
Simple Direct Mounting: Easy mounting on the damper shaft with a universal shaft clamp supplied with an anti-rotation device.
Manual Override: Manual override with push-button is possible, disengaging the gear train as long as the button is pressed or remains locked.
Adjustable Angle of Rotation: Adjustable angle of rotation with mechanical end stops.
High Functional Reliability: Overload protection ensures the actuator stops automatically when the end stop is reached.
Electrical Accessories: Auxiliary switches, feedback potentiometers, signal converters, and positioners for various mounting options.
Mechanical Accessories: Actuator arms, shaft extensions, ball joints, damper crank arms, shaft clamps, anti-rotation mechanisms, form fit inserts, mounting kits, and position indicators.
All Belimo products can be found on our website. For more information and to explore our range of Belimo products, visit our website at https://ecospares.co.uk/collections/belimo. If you need any assistance, please contact us.
