BF24-SR | Belimo Spring Return Damper Actuator 18Nm 24VAC DC Modulating Control

Belimo · Motors & Motion

Description  The Belimo BF24-SR is a spring-return damper actuator designed for precise control and reliable fail-safe operation in HVAC air handling systems. The BF24-SR operates on AC/DC 24 V power and provides accurate modulating control with integrated position feedback for monitoring damper position.     Technical Specifications  Condition New/Never Used Surplus Brand Belimo Category HVAC Actuators Part Number BF24-SR Subcategory Damper Actuators Nominal Voltage AC/DC 24 V Nominal Frequency 50/60 Hz Voltage Range AC 19.2…28.8 V / DC 21.6…28.8 V Power Consumption (Operation) 7 W Power Consumption (Rest) 2 W Power Consumption (Wire Sizing) 10 VA Inrush Current 8.3 A @ 5 ms Control Signal 2…10 V Input Impedance 100 kΩ Position Feedback 2…10 V, max. 0.5 mA Position Accuracy ±5% Motor Torque 18 Nm Fail-Safe Torque 12 Nm Angle of Rotation Max. 95° Running Time (Motor) <120 s / 90° Running Time (Fail-Safe) 16 s @ 20°C Ambient Temperature -30…50°C Ambient Humidity Max. 95% RH, non-condensing Service Requirement Maintenance-free Weight 2.6 kg   Information About BF24-SR The BF24-SR is a spring-return damper actuator from Belimo’s safety-focused actuator range, engineered for applications requiring controlled positioning and automatic movement to a defined safety position during power loss. It combines a robust motor drive with a mechanical spring-return mechanism, ensuring dependable operation under both normal and emergency conditions. The BF24-SR supports modulating control via a 2…10 V input signal and provides a 2…10 V position feedback output for system integration and diagnostics. Dual auxiliary switches, halogen-free cabling, and selectable mounting orientation allow flexible installation in commercial and industrial HVAC damper assemblies. Key Features Spring-Return Fail-Safe Function: Automatically drives the damper to the safety position in the event of power loss using a high-reliability spring mechanism. Modulating Control Signal: Accepts a 2…10 V control input for precise proportional damper positioning. High Torque Performance: Provides 18 Nm motor torque and 12 Nm fail-safe torque to handle demanding damper loads. Integrated Position Feedback: Supplies a 2…10 V feedback signal to indicate actual damper position with ±5% accuracy. Dual Auxiliary Switches: Includes 2x SPDT switches for position indication, interlocking, or system monitoring functions. Manual Override Capability: Features a manual override with position stop for commissioning and maintenance procedures. Wide Environmental Tolerance: Designed for stable operation across broad temperature and humidity ranges in HVAC environments. The BF24-SR delivers the reliability and precision required for modulating damper control with fail-safe protection in HVAC systems.

Brand: Belimo · Category: Motors & Motion

Key features

• Spring-Return Fail-Safe Function: Automatically drives the damper to the safety position in the event of power loss using a high-reliability spring mechanism.
• Modulating Control Signal: Accepts a 2…10 V control input for precise proportional damper positioning.
• High Torque Performance: Provides 18 Nm motor torque and 12 Nm fail-safe torque to handle demanding damper loads.
• Integrated Position Feedback: Supplies a 2…10 V feedback signal to indicate actual damper position with ±5% accuracy.
• Dual Auxiliary Switches: Includes 2x SPDT switches for position indication, interlocking, or system monitoring functions.
• Manual Override Capability: Features a manual override with position stop for commissioning and maintenance procedures.
• Wide Environmental Tolerance: Designed for stable operation across broad temperature and humidity ranges in HVAC environments.

Specifications

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