Belimo NF24A-MOD Technical Data Sheet

Communicative rotary actuator fail-safe for
adjusting dampers in technical building
installations
• Air damper size up to approx. 2 m²
• Torque motor 90 in-lb [10 Nm]
• Nominal voltage AC/DC 24 V
• Control modulating, communicative, Hybrid
• Conversion of sensor signals
• Communication via BACnet MS/TP, Modbus
RTU, Belimo-MP-Bus or conventional control
Technical data
Data bus communication
Functional data
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Technical data sheet
Electrical data Nominal voltage
Nominal voltage frequency
Nominal voltage range
Power consumption in operation
Power consumption in rest position
Power consumption for wire sizing
Connection supply / control
Communicative control
Number of nodes
Torque motor
Torque Fail-Safe
Operating range Y
Operating range Y variable
Position feedback U
Position feedback U note
Position feedback U variable
Position accuracy
Direction of motion motor
Direction of motion fail-safe
Manual override
Angle of rotation
Angle of rotation note
Running Time (Motor)
Running time motor variable
Running time fail-safe
Adaptation Setting Range
Adaptation Setting Range Variable
Override control, controllable via bus
communication
Override control variable
NF24A-MOD • en-us • 2022-03-15 • Subject to change
NF24A-MOD
AC/DC 24 V
50/60 Hz
AC 19.2...28.8 V / DC 21.6...28.8 V
7 W
3.5 W
9.5 VA
cable 3 ft. [1 m], 6 x 0.75 mm²
BACnet MS/TP
Modbus RTU (default setting)
MP-Bus
BACnet / Modbus see interface description
MP-Bus max. 8
90 in-lb [10 Nm]
10 Nm
2...10 V
0.5...10 V
2...10 V
Max. 1 mA
Start point 0.5...8 V
End point 2...10 V
±5%
selectable with switch L/R
selectable by mounting L/R
by means of hand crank and locking switch
Max. 95°
adjustable starting at 33% in 2.5% steps (with
mechanical end stop)
150 s / 90°
40...150 s
<20 s @ -4...122°F [-20...50°C], <60 s @ -22°F
[-30°C]
manual
No action
Adaptation when switched on
Adaptation after using the hand crank
MAX (maximum position) = 100%
MIN (minimum position) = 0%
ZS (intermediate position) = 50%
MAX = (MIN + 32%)...100%
MIN = 0%...(MAX – 32%)
ZS = MIN...MAX
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