The Belimo LM24A-SR is a high-performance modulating damper actuator designed for precise control and adjustment of dampers in technical building installations. This actuator ensures optimal airflow regulation in HVAC systems, enhancing both efficiency and comfort. Suitable for air damper sizes up to approximately 1 m², the LM24A-SR is a reliable choice for a wide range of applications. Click here for the technical data PDF 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: 1 W Power Consumption in Rest Position: 0.4 W Power Consumption for Wire Sizing: 2 VA Connection Supply / Control: Cable 1 m, 4x 0.75 mm² Parallel Operation: Yes (note the performance data) Functional Data: Torque Motor: 5 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, Motor: 35 dB(A) Mechanical Interface: Universal shaft clamp 6...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 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 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: 0.47 kg Why You Should Buy the Belimo LM24A-SR Precision Control: With its modulating control signal of 0...10 V, the LM24A-SR ensures accurate and reliable adjustment of damper positions, contributing to optimal HVAC system performance. Energy Efficiency: The actuator's low power consumption in both operation (1 W) and rest position (0.4 W) helps reduce overall energy usage, supporting sustainability goals. Robust and Reliable: The actuator features a high protection class (IP54) and is certified to meet stringent standards, ensuring durability and reliability in various environments. Ease of Installation: The LM24A-SR is designed for simple direct mounting on the damper shaft with a universal shaft clamp, making installation straightforward and hassle-free. Maintenance-Free: This actuator is designed for high functional reliability and requires no regular maintenance, saving time and reducing operational costs. Electrical Accessories: Auxiliary switch (1x SPDT or 2x SPDT add-on) Feedback potentiometer (140 Ω, 1 kΩ, 10 kΩ add-on) Signal converter voltage/current (100 kΩ 4...20 mA, Supply AC/DC 24 V) Range controller for wall mounting Positioner for wall mounting, built-in mounting, or front-panel mounting Mechanical Accessories: Shaft extension Shaft clamp (various sizes) Anti-rotation mechanism Form fit insert (various sizes) Position indicator 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.
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