Description
The Belimo NM24A-SR Modulating Damper Actuator is a high-performance actuator designed for adjusting air dampers in technical building installations. Ideal for air dampers up to approximately 2 m², this actuator delivers precise and reliable control, making it a top choice for HVAC professionals seeking robust and efficient damper solutions.
Key Features
Torque Motor: Provides a steady torque of 10 Nm for effective damper adjustments.
Voltage Compatibility: Operates on AC/DC 24 V, supporting a frequency range of 50/60 Hz.
Control Signal: Features modulating control from 2 to 10 V, ensuring accurate positioning.
Position Feedback: Offers position feedback from 2 to 10 V for precise control and monitoring.
Manual Override: Equipped with a manual override push-button that can be locked, providing flexibility during maintenance or adjustments.
Adjustable Angle of Rotation: The angle of rotation can be limited on both sides using adjustable mechanical end stops.
High Functional Reliability: Built with overload protection, the actuator automatically stops when end stops are reached, ensuring long-term durability.
Universal Shaft Clamp: Facilitates easy direct mounting with a clamping range of 8 to 26.7 mm.
Technical Specifications
- Nominal Voltage: AC/DC 24 V
- Voltage Range: AC 19.2...28.8 V / DC 19.2...28.8 V
- Power Consumption:
- In Operation: 2 W
- In Rest Position: 0.4 W
- For Wire Sizing: 4 VA
- Torque: 10 Nm
- Operating Range: 2...10 V
- Input Impedance: 100 kΩ
- Position Accuracy: ±5%
- Running Time Motor: 150 s / 90°
- Sound Power Level: 35 dB(A)
- Protection Class: IEC/EN III, Safety Extra-Low Voltage (SELV)
- Degree of Protection: IEC/EN IP54, NEMA/UL NEMA 2
- Ambient Temperature: -30...50°C
- Storage Temperature: -40...80°C
- Weight: 0.73 kg
Safety and Compliance
- Certification: IEC/EN 60730-1, IEC/EN 60730-2-14
- UL Approval: cULus according to UL60730-1A, UL60730-2-14, and CAN/CSA E60730-1
- Hygiene Test: Compliant with VDI 6022 Part 1 / SWKI VA 104-01 for cleanability and low emissions.
- Pollution Degree: 3
- Rated Impulse Voltage: 0.8 kV
- EMC Compliance: CE according to 2014/30/EU
Accessories
- Electrical: Auxiliary switches (S1A, S2A), Feedback potentiometers (P140A, P1000A, P10000A), Signal converter (Z-UIC), Positioners (SGA24, SGE24, SGF24, CRP24-B1).
- Mechanical: Actuator arms, Shaft extensions, Ball joints, Damper crank arms, Shaft clamps, Form fit inserts, Anti-rotation mechanisms, Baseplate extensions, Position indicators.
Installation and Usage
- Direct Mounting: Simple installation on damper shafts with universal shaft clamp and anti-rotation device.
- Manual Override: Push-button disengages gear train for manual adjustments.
- Parallel Operation: Supports parallel operation with other actuators, adhering to performance data.Wiring: Supplied from isolating transformer with parallel connection capability.
Why Choose the Belimo NM24A-SR?
The Belimo NM24A-SR offers unmatched reliability and performance for air damper control in technical building installations. Its robust features, coupled with high precision and ease of installation, make it an ideal choice for professionals seeking durable and efficient damper actuators. The device's compliance with international safety and hygiene standards further ensures it meets the rigorous demands of modern HVAC systems.
Explore More Belimo Products
All Belimo products, including the NM24A-SR Modulating Damper Actuator, can be found on our website http://www.ecospares.co.uk/collections/belimo. If you need any assistance or have questions, please don't hesitate to get in touch with us.
| Specifications |
|
|
|
| Ambient Temperature |
-30...50°C [-22...122°F] |
| Angle of rotation |
95 |
| Connection Supply Control |
Cable 1 m, 4x 0.75 mm² |
| Control type |
DC 2...10 V |
| Degree Of Protection NEMA |
NEMA 2 |
| Direction Of Motion Motor |
selectable with switch 0/1 |
| Enclosure Type |
UL Enclosure Type 2 |
| Manual override |
With push-button, can be locked |
| Mechanical interface |
Universal shaft clamp 8...26.7 mm |
| Power consumption (holding) |
0.4 W |
| Power consumption (running) |
2 W |
| Power Consumption For Wire Sizing |
4 VA |
| Protection category |
IP54 |
| Running time (motor) |
150 s / 90° |
| Torque |
10 Nm |
| Voltage AC/DC |
AC/DC 24 V |
