LF24-MFT-20 US | Belimo Programmable Spring Return Damper Actuator 35 In Lb 24V
Belimo · Motors & Motion
Description The Belimo LF24-MFT-20 US is a compact spring return damper actuator designed to deliver 35 in-lb (4 Nm) of torque for precise airflow control. It operates on AC/DC 24 V power and uses MFT programmable control with a factory-set 6–9 V operating range for specialized HVAC applications. Technical Specifications Condition New/Never Used Surplus Brand Belimo Category Actuators & Dampers Part Number LF24-MFT-20 US 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) 3 W Power Consumption (Rest) 1.5 W Transformer Sizing 6 VA Control Signal MFT programmable, 6…9 V Input Impedance 100 kΩ Position Feedback 2…10 V Torque Output 35 in-lb (4 Nm) Angle of Rotation Max. 95°, adjustable Running Time (Motor) 75…300 s / 90° Running Time (Fail-Safe) <25 s @ -20…50°C Electrical Connection 18 GA cable, 1 m, 1/2" NPT Noise Level 30 dB(A) motor Ambient Temperature -30…50°C Weight 3.3 lb (1.5 kg) Information About LF24-MFT-20 US The LF24-MFT-20 US is part of Belimo’s LF series of low-torque spring return actuators developed for accurate control of small air dampers. It incorporates Belimo MFT technology, allowing programmable configuration of control behavior while operating with a predefined 6…9 V control range as supplied from the factory. The actuator features electronic overload protection throughout its full rotation range and a double-insulated design to ensure safe, reliable operation. Reversible fail-safe direction, selectable motor rotation, and adjustable mechanical stops provide flexibility for installation and system integration. Key Features Spring Return Fail-Safe Operation: Integrated spring mechanism automatically drives the damper to a predefined safety position during power loss to support system protection. Low Torque Precision Control: Delivers a constant 35 in-lb (4 Nm) torque suitable for small and lightweight damper applications requiring accurate positioning. MFT Programmable Control Technology: Supports configurable operating behavior with a factory-set 6…9 V control range, enabling compatibility with specialized control strategies. Configurable Control Parameters: Adjustable start and end points allow fine tuning of actuator response to match specific system requirements. Integrated Position Feedback: Provides a variable 2…10 V feedback signal for continuous monitoring and closed-loop control. Electronic Overload Protection: Protects internal components throughout the full 0…95° rotation range against obstruction or excessive load. Reversible And Adjustable Installation: Motor direction is selectable by switch and fail-safe direction is reversible via mounting orientation for flexible field installation. The LF24-MFT-20 US delivers the reliability and precision required for programmable airflow control and dependable fail-safe damper operation in HVAC systems.
Brand: Belimo · Category: Motors & Motion
Key features
- Spring Return Fail-Safe Operation: Integrated spring mechanism automatically drives the damper to a predefined safety position during power loss to support system protection.
- Low Torque Precision Control: Delivers a constant 35 in-lb (4 Nm) torque suitable for small and lightweight damper applications requiring accurate positioning.
- MFT Programmable Control Technology: Supports configurable operating behavior with a factory-set 6…9 V control range, enabling compatibility with specialized control strategies.
- Configurable Control Parameters: Adjustable start and end points allow fine tuning of actuator response to match specific system requirements.
- Integrated Position Feedback: Provides a variable 2…10 V feedback signal for continuous monitoring and closed-loop control.
- Electronic Overload Protection: Protects internal components throughout the full 0…95° rotation range against obstruction or excessive load.
- Reversible And Adjustable Installation: Motor direction is selectable by switch and fail-safe direction is reversible via mounting orientation for flexible field installation.
Specifications
| Manufacturer part number | LF24-MFT-20 US |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | Actuators & Dampers |
| Part Number | LF24-MFT-20 US |
| 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) | 3 W |
| Power Consumption (Rest) | 1.5 W |
| Transformer Sizing | 6 VA |
| Control Signal | MFT programmable, 6…9 V |
| Input Impedance | 100 kΩ |
| Position Feedback | 2…10 V |
| Torque Output | 35 in-lb (4 Nm) |
| Angle of Rotation | Max. 95°, adjustable |
| Running Time (Motor) | 75…300 s / 90° |
| Running Time (Fail-Safe) | <25 s @ -20…50°C |
| Electrical Connection | 18 GA cable, 1 m, 1/2" NPT |
| Noise Level | 30 dB(A) motor |
| Ambient Temperature | -30…50°C |
| Weight | 3.3 lb (1.5 kg) |
| Product type | Damper Actuators |
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