Belimo LF24-SR Damper Actuator

Description

The LF24-SR Rotary Actuator by Belimo is a fail-safe actuator designed for adjusting dampers in technical building installations. This robust and reliable actuator is ideal for air damper sizes up to approximately 0.8 m². With a modulating control range of 2...10 V and position feedback capabilities, it ensures precise and efficient damper control, enhancing the overall performance of HVAC systems.

 

Electrical Data:

- Nominal Voltage: AC/DC 24 V

- Nominal Voltage Frequency: 50/60 Hz

- Nominal Voltage Range: AC 19.2...28.8 V / DC 21.6...28.8 V

- Power Consumption in Operation: 2.5 W

- Power Consumption in Rest Position: 1 W

- Power Consumption for Wire Sizing: 5 VA

- Connection Supply / Control: Cable 1 m, 4x 0.75 mm²

- Parallel Operation: Yes (note the performance data)

 

Functional Data:

- Torque Motor: 4 Nm

- Torque Fail-Safe: 4 Nm

- Operating Range Y: 2...10 V

- Input Impedance: 100 kΩ

- Position Feedback U: 2...10 V

- Position Feedback U Note: Max. 0.7 mA

- Position Accuracy: ±5%

- Direction of Motion Motor: Selectable with switch L/R

- Direction of Motion Fail-Safe: Selectable by mounting L/R

- Manual Override: No

- Angle of Rotation: Max. 95°

- Angle of Rotation Note: Adjustable 37...100% with integrated mechanical limitation

- Running Time Motor: 150 s / 90°

- Running Time Fail-Safe: <20 s @ -20...50°C / <60 s @ -30°C

- Sound Power Level, Motor: 30 dB(A)

- Mechanical Interface: Universal shaft clamp 8...16 mm

- Position Indication: Mechanical

- Service Life: Min. 60,000 fail-safe positions

 

Safety Data:

- Protection Class IEC/EN: III, Safety Extra-Low Voltage (SELV)

- Degree of Protection IEC/EN: IP54

- EMC: CE according to 2014/30/EU

- Low Voltage Directive: CE according to 2014/35/EU

- Certification IEC/EN: IEC/EN 60730-1 and IEC/EN 60730-2-14

- 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: 1.5 kg

 


Operating Mode: The actuator is connected with a standard control signal of 0...10 V and moves the damper to the operating position while tensioning the return spring. The damper returns to the fail-safe position by spring force when the supply voltage is interrupted.

 

Simple Direct Mounting: Easy direct mounting on the damper shaft with a universal shaft clamp, including an anti-rotation device.

 

Adjustable Angle of Rotation: Mechanically adjustable angle of rotation with integrated end stops.

 

High Functional Reliability: The actuator is overload protected, requires no limit switches, and automatically stops when the end stop is reached.

 

Additional Accessories:

- Electrical Accessories:

  - Auxiliary switch 2x SPDT (Type: S2A-F)

  - Feedback potentiometer 1 kΩ (Type: P1000A-F)

  - Signal converter voltage/current 100 kΩ 4...20 mA, Supply AC/DC 24 V (Type: Z-UIC)

  - Positioners for various mounting types (Types: SGA24, SGE24, SGF24, CRP24-B1)

 

- Mechanical Accessories:

  - Shaft extension 170 mm ø10 mm for damper shaft ø6...16 mm (Type: AV6-20)

  - Shaft clamp reversible, clamping range ø16...20 mm (Type: K6-1)

  - Ball joint suitable for damper crank arm (Types: KH8, KH10, KG10A, KG8)

  - Damper crank arm Slot width 8.2 mm, clamping range ø10...18 mm (Type: KH8)

  - Actuator arm, clamping range ø8...16 mm, Slot width 8.2 mm (Type: KH-LF)

  - Angle of rotation limiter, with end stop (Type: ZDB-LF)

  - Form fit adapter 8x8 mm (Type: ZF8-LF)

  - Mounting kits for linkage operation (Types: ZG-LF1, ZG-LF3)

  - Anti-rotation mechanism 180 mm, Multipack 20 pcs. (Type: Z-ARS180L)

 

 

 

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 get in touch with us on 01772 284 626.

 

Product form

The LF24-SR Rotary Actuator by Belimo is a fail-safe actuator designed for adjusting dampers in technical building installations. This robust... Read more

SKU: LF24-SR

£272.00£190.40 Excl. VAT

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      Description

      The LF24-SR Rotary Actuator by Belimo is a fail-safe actuator designed for adjusting dampers in technical building installations. This robust and reliable actuator is ideal for air damper sizes up to approximately 0.8 m². With a modulating control range of 2...10 V and position feedback capabilities, it ensures precise and efficient damper control, enhancing the overall performance of HVAC systems.

       

      Electrical Data:

      - Nominal Voltage: AC/DC 24 V

      - Nominal Voltage Frequency: 50/60 Hz

      - Nominal Voltage Range: AC 19.2...28.8 V / DC 21.6...28.8 V

      - Power Consumption in Operation: 2.5 W

      - Power Consumption in Rest Position: 1 W

      - Power Consumption for Wire Sizing: 5 VA

      - Connection Supply / Control: Cable 1 m, 4x 0.75 mm²

      - Parallel Operation: Yes (note the performance data)

       

      Functional Data:

      - Torque Motor: 4 Nm

      - Torque Fail-Safe: 4 Nm

      - Operating Range Y: 2...10 V

      - Input Impedance: 100 kΩ

      - Position Feedback U: 2...10 V

      - Position Feedback U Note: Max. 0.7 mA

      - Position Accuracy: ±5%

      - Direction of Motion Motor: Selectable with switch L/R

      - Direction of Motion Fail-Safe: Selectable by mounting L/R

      - Manual Override: No

      - Angle of Rotation: Max. 95°

      - Angle of Rotation Note: Adjustable 37...100% with integrated mechanical limitation

      - Running Time Motor: 150 s / 90°

      - Running Time Fail-Safe: <20 s @ -20...50°C / <60 s @ -30°C

      - Sound Power Level, Motor: 30 dB(A)

      - Mechanical Interface: Universal shaft clamp 8...16 mm

      - Position Indication: Mechanical

      - Service Life: Min. 60,000 fail-safe positions

       

      Safety Data:

      - Protection Class IEC/EN: III, Safety Extra-Low Voltage (SELV)

      - Degree of Protection IEC/EN: IP54

      - EMC: CE according to 2014/30/EU

      - Low Voltage Directive: CE according to 2014/35/EU

      - Certification IEC/EN: IEC/EN 60730-1 and IEC/EN 60730-2-14

      - 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: 1.5 kg

       


      Operating Mode: The actuator is connected with a standard control signal of 0...10 V and moves the damper to the operating position while tensioning the return spring. The damper returns to the fail-safe position by spring force when the supply voltage is interrupted.

       

      Simple Direct Mounting: Easy direct mounting on the damper shaft with a universal shaft clamp, including an anti-rotation device.

       

      Adjustable Angle of Rotation: Mechanically adjustable angle of rotation with integrated end stops.

       

      High Functional Reliability: The actuator is overload protected, requires no limit switches, and automatically stops when the end stop is reached.

       

      Additional Accessories:

      - Electrical Accessories:

        - Auxiliary switch 2x SPDT (Type: S2A-F)

        - Feedback potentiometer 1 kΩ (Type: P1000A-F)

        - Signal converter voltage/current 100 kΩ 4...20 mA, Supply AC/DC 24 V (Type: Z-UIC)

        - Positioners for various mounting types (Types: SGA24, SGE24, SGF24, CRP24-B1)

       

      - Mechanical Accessories:

        - Shaft extension 170 mm ø10 mm for damper shaft ø6...16 mm (Type: AV6-20)

        - Shaft clamp reversible, clamping range ø16...20 mm (Type: K6-1)

        - Ball joint suitable for damper crank arm (Types: KH8, KH10, KG10A, KG8)

        - Damper crank arm Slot width 8.2 mm, clamping range ø10...18 mm (Type: KH8)

        - Actuator arm, clamping range ø8...16 mm, Slot width 8.2 mm (Type: KH-LF)

        - Angle of rotation limiter, with end stop (Type: ZDB-LF)

        - Form fit adapter 8x8 mm (Type: ZF8-LF)

        - Mounting kits for linkage operation (Types: ZG-LF1, ZG-LF3)

        - Anti-rotation mechanism 180 mm, Multipack 20 pcs. (Type: Z-ARS180L)

       

       

       

      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 get in touch with us on 01772 284 626.

       

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