Belimo NF24A User Manual

www.belimo.com T2-NF24A • en • v1.1 • 06.2011 • Subject to changes 1 / 3
Technical data sheet NF24A
Technical data
Electrical data
Nominal voltage AC 24 V, 50/60 Hz / DC 24 V
Nominal voltage range AC 19.2 ... 28.8 V / DC 21.6 ... 28.8 V
Power consumption In operation
At rest
For wire sizing
6 W @ nominal torque
2.5 W
8.5 VA
Connection Cable 1 m, 2 x 0.75 mm
2
Functional data
Torque Motor
Spring return
Min. 10 Nm @ nominal voltage
Min. 10 Nm
Direction of rotation Can be selected by mounting L / R
Manual override With hand crank and interlocking switch
Angle of rotation Max. 95° , can be limited with adjustable
mechanical end stop
Running time Motor
Spring return
≤75 s (0 ... 10 Nm)
≤20 s @ –20 ... 50°C / max. 60 s @ –30°C
Sound power level Motor
Spring return
≤45 dB (A)
≤62 dB (A)
Service life Min. 60,000 emergency positions
Position indication Mechanical
Safety
Protection class III Extra low voltage
UL Class 2 Supply
Degree of protection IP54
NEMA2, UL Enclosure Type 2
EMC CE according to 2004/108/EC
Certication Certied to IEC/EN 60730-1 and IEC/EN 60730-2-14
cULus according to UL 60730-1A and UL 60730-2-14
and CAN/CSA E60730-1:02
Mode of operation Type 1.AA
Rated impulse voltage 0.8 kV
Control pollution degree 3
Ambient temperature –30 ... +50°C
Non-operating temperature –40 ... +80°C
Ambient humidity 95% r.h., non-condensating
Maintenance Maintenance-free
Dimensions / Weight
Dimensions See «Dimensions» on page 3
Weight Approx. 1.8 kg
Spring return actuator with emergency
function for adjusting air dampers in
ventilation and air conditioning systems
in buildings
• For air dampers up to approx. 2 m
2
• Torque 10 Nm
• Nominal voltage AC/DC 24 V
• Control: Open-close

Belimo NF24A Specifications

General

Brand	Belimo
Model	NF24A
Category	Controller
Language	English

Summary

Technical Data

Electrical Data

Nominal voltage, voltage range, power consumption, connection details.

Functional Data

Torque, direction of rotation, manual override, angle of rotation, running time, sound power level, service life, position indication.

Safety

Protection class, degree of protection, EMC, certification, mode of operation, rated impulse voltage, control pollution degree, ambient temperature, humidity.

Dimensions and Weight

Dimensions and weight specifications for the actuator.

Safety Notes

Product Features

Mode of operation, simple direct mounting, manual override, adjustable angle of rotation, high operational reliability.

Electrical Installation

Wiring diagram and notes for connecting the actuator.

Accessories

Electrical and mechanical accessories available for the actuator.

Dimensions and Dimensional Drawings

Variant 1a: 3/4"-Spindle Clamp (EU Standard)

Damper spindle size and length compatibility for Variant 1a.

Variant 1b: 1"-Spindle Clamp (EU Standard)

Damper spindle size and length compatibility for Variant 1b.

Variant 2: 1/2"-Spindle Clamp (Optional)

Damper spindle size and length compatibility for Variant 2.

Wiring Diagrams and Connections

AC 24 V / DC 24 V Wiring

Wiring diagram and terminal connections for AC 24V/DC 24V models.

AC 230 V Wiring

Wiring diagram and terminal connections for AC 230V models.

AC 24-240 V / DC 24-125 V Wiring

Wiring diagram and terminal connections for AC 24-240V/DC 24-125V models.