Technical data sheet
SF24A-MP
www.belimo.com
SF24A-MP • en-gb • 2020-12-14 • Subject to change
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Communicative rotary actuator fail-safe for
adjusting dampers in technical building
installations
• Air damper size up to approx. 4 m²
• Torque motor 20 Nm
• Nominal voltage AC/DC 24 V
• Control modulating, communicative 2...10 V
variable
• Position feedback 2...10 V variable
• Conversion of sensor signals
• Communication via Belimo MP-Bus
Technical data
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
8.5 W
Power consumption in rest position
3.5 W
Power consumption for wire sizing
11 VA
Connection supply / control
Cable 1 m, 4 x 0.75 mm²
Parallel operation
Yes (note the performance data)
Functional data Torque motor
20 Nm
Torque fail-safe
20 Nm
Communicative control
MP-Bus
Operating range Y
2...10 V
Input Impedance
100 kΩ
Operating range Y variable
Start point 0.5...30 V
End point 2.5...32 V
Options positioning signal
Open/close
3-point (AC only)
Modulating (DC 0...32 V)
Position feedback U
2...10 V
Position feedback U note
Max. 0.5 mA
Position feedback U variable
Start point 0.5...8 V
End point 2.5...10 V
Position accuracy
±5%
Direction of motion motor
selectable with switch L/R
Direction of motion variable
electronically reversible
Direction of motion fail-safe
selectable by mounting L/R
Manual override
by means of hand crank and locking switch
Angle of rotation
Max. 95°
Angle of rotation note
adjustable starting at 33% in 2.5% steps (with
mechanical end stop)
Running time motor
150 s / 90°
Running time motor variable
70...220 s
Running time fail-safe
<20 s / 90°
Running time fail-safe note
<20 s @ -20...50°C / <60 s @ -30°C
Adaptation setting range
manual
Adaptation setting range variable
No action
Adaptation when switched on
Adaptation after using the hand crank
Override control
MAX (maximum position) = 100%
MIN (minimum position) = 0%
ZS (intermediate position, AC only) = 50%
