2024年10月20日发(作者：慕容荷紫)
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 Open/close
SF24A
Technical data
Electrical dataNominal voltage
Nominal voltage frequency
Nominal voltage range
Power consumption in operation
Power consumption in rest position
Power consumption for wire sizing
Connection supply / control
Parallel operation
Functional data
Torque motor
Torque fail-safe
Direction of motion motor
Direction of motion fail-safe
Manual override
Angle of rotation
Angle of rotation note
Running time motor
Running time fail-safe
Sound power level, motor
Mechanical interface
Position indication
Service life
Safety data
Protection class IEC/EN
Power source UL
Degree of protection IEC/EN
Degree of protection NEMA/UL
Enclosure
EMC
Certification IEC/EN
UL Approval
AC/DC 24 V
50/60 Hz
AC 28.8 V / DC 28.8 V
5 W
2.5 W
7.5 VA
Cable 1 m, 2x 0.75 mm²
Yes (note the performance data)
20 Nm
20 Nm
selectable by mounting 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)
75 s / 90°
<20 s @ -20...50°C / <60 s @ -30°C
45 dB(A)
Universal shaft 25.4 mm
Mechanical
Min. 60'000 fail-safe positions
III, Safety Extra-Low Voltage (SELV)
Class 2 Supply
IP54
NEMA 2
UL Enclosure Type 2
CE according to 2014/30/EU
IEC/EN 60730-1 and IEC/EN 60730-2-14
cULus according to UL60730-1A, UL60730-2-14
and CAN/CSA E60730-1
The UL marking on the actuator depends on
the production site, the device is UL-compliant
in any case
24A • en-gb • 2023-12-11 • Subject to change1 / 4
Technical data
Safety data
Hygiene test
SF24A
According to VDI 6022 Part 1 / SWKI VA
104-01, cleanable and disinfectable, low
emission
Type
0.8 kV
3
Max. 95% RH, non-condensing
-30...50°C [-22...122°F]
-40...80°C [-40...176°F]
maintenance-free
2.1 kg
Type of action
Rated impulse voltage supply / control
Pollution degree
Ambient humidity
Ambient temperature
Storage temperature
Servicing
Weight
Weight
Safety notes
•This device has been designed for use in stationary heating, ventilation and air-conditioning
systems and must not be used outside the specified field of application, especially in aircraft
or in any other airborne means of transport.
•Outdoor application: only possible in case that no (sea) water, snow, ice, insolation or
aggressive gases interfere directly with the device and that it is ensured that the ambient
conditions remain within the thresholds according to the data sheet at any time.
•Only authorised specialists may carry out installation. All applicable legal or institutional
installation regulations must be complied with during installation.
•The device may only be opened at the manufacturer's site. It does not contain any parts that
can be replaced or repaired by the user.
•Cables must not be removed from the device.
•To calculate the torque required, the specifications supplied by the damper manufacturers
concerning the cross-section and the design, as well as the installation situation and the
ventilation conditions must be observed.
•The device contains electrical and electronic components and must not be disposed of as
household refuse. All locally valid regulations and requirements must be observed.
Product features
Operating modeThe actuator moves the damper to the operating position at the same time as tensioning the
return spring. The damper is turned back to the fail-safe position by spring force when the
supply voltage is interrupted.
Simple direct mounting on the damper shaft with a universal shaft clamp, supplied with an
anti-rotation device to prevent the actuator from rotating.
By using the hand crank the damper can be actuated manually and engaged with the locking
switch at any position. Unlocking is carried out manually or automatically by applying the
operating voltage.
Adjustable angle of rotation with mechanical end stops.
The actuator is overload protected, requires no limit switches and automatically stops when
the end stop is reached.
Simple direct mounting
Manual override
Adjustable angle of rotation
High functional reliability
Accessories
Electrical accessoriesDescription
Auxiliary switch 2x SPDT
Feedback potentiometer 1 kΩ
Mechanical accessoriesDescription
Shaft extension 240 mm ø20 mm for damper shaft ø8...22.7 mm
Type
S2A-F
P1000A-F
Type
AV8-25
24A • en-gb • 2023-12-11 • Subject to change2 / 4
Accessories
Description
End stop indicator
Shaft clamp reversible, for central mounting, for damper shafts ø12.7 /
19.0 / 25.4 mm
Ball joint suitable for damper crank arm KH8 / KH10
Ball joint suitable for damper crank arm KH8
Damper crank arm Slot width 8.2 mm, clamping range ø10...18 mm
Actuator arm, for 3/4" shafts, clamping range ø10...22 mm, Slot width
8.2 mm
Form fit insert 10x10 mm, Multipack 20 pcs.
Form fit insert 12x12 mm, Multipack 20 pcs.
Form fit insert 15x15 mm, Multipack 20 pcs.
Form fit insert 16x16 mm, Multipack 20 pcs.
Mounting kit for linkage operation for flat and side installation
Baseplate extension
Anti-rotation mechanism 230 mm, Multipack 20 pcs.
Hand crank 63 mm
Type
IND-AFB
K7-2
KG10A
KG8
KH8
KH-AFB
SF24A
ZF10-NSA-F
ZF12-NSA-F
ZF15-NSA-F
ZF16-NSA-F
ZG-AFB
Z-SF
Z-ARS230L
ZKN2-B
Electrical installation
Supply from isolating transformer.
Parallel connection of other actuators possible. Observe the performance data.
Wire colours:
1 = black
2 = red
Wiring diagrams
AC/DC 24 V, open/close
24A • en-gb • 2023-12-11 • Subject to change3 / 4
Dimensions
Spindle length
Min. 85
Min. 15
Clamping range
SF24A
24A • en-gb • 2023-12-11 • Subject to change4 / 4
2024年10月20日发(作者：慕容荷紫)
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 Open/close
SF24A
Technical data
Electrical dataNominal voltage
Nominal voltage frequency
Nominal voltage range
Power consumption in operation
Power consumption in rest position
Power consumption for wire sizing
Connection supply / control
Parallel operation
Functional data
Torque motor
Torque fail-safe
Direction of motion motor
Direction of motion fail-safe
Manual override
Angle of rotation
Angle of rotation note
Running time motor
Running time fail-safe
Sound power level, motor
Mechanical interface
Position indication
Service life
Safety data
Protection class IEC/EN
Power source UL
Degree of protection IEC/EN
Degree of protection NEMA/UL
Enclosure
EMC
Certification IEC/EN
UL Approval
AC/DC 24 V
50/60 Hz
AC 28.8 V / DC 28.8 V
5 W
2.5 W
7.5 VA
Cable 1 m, 2x 0.75 mm²
Yes (note the performance data)
20 Nm
20 Nm
selectable by mounting 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)
75 s / 90°
<20 s @ -20...50°C / <60 s @ -30°C
45 dB(A)
Universal shaft 25.4 mm
Mechanical
Min. 60'000 fail-safe positions
III, Safety Extra-Low Voltage (SELV)
Class 2 Supply
IP54
NEMA 2
UL Enclosure Type 2
CE according to 2014/30/EU
IEC/EN 60730-1 and IEC/EN 60730-2-14
cULus according to UL60730-1A, UL60730-2-14
and CAN/CSA E60730-1
The UL marking on the actuator depends on
the production site, the device is UL-compliant
in any case
24A • en-gb • 2023-12-11 • Subject to change1 / 4
Technical data
Safety data
Hygiene test
SF24A
According to VDI 6022 Part 1 / SWKI VA
104-01, cleanable and disinfectable, low
emission
Type
0.8 kV
3
Max. 95% RH, non-condensing
-30...50°C [-22...122°F]
-40...80°C [-40...176°F]
maintenance-free
2.1 kg
Type of action
Rated impulse voltage supply / control
Pollution degree
Ambient humidity
Ambient temperature
Storage temperature
Servicing
Weight
Weight
Safety notes
•This device has been designed for use in stationary heating, ventilation and air-conditioning
systems and must not be used outside the specified field of application, especially in aircraft
or in any other airborne means of transport.
•Outdoor application: only possible in case that no (sea) water, snow, ice, insolation or
aggressive gases interfere directly with the device and that it is ensured that the ambient
conditions remain within the thresholds according to the data sheet at any time.
•Only authorised specialists may carry out installation. All applicable legal or institutional
installation regulations must be complied with during installation.
•The device may only be opened at the manufacturer's site. It does not contain any parts that
can be replaced or repaired by the user.
•Cables must not be removed from the device.
•To calculate the torque required, the specifications supplied by the damper manufacturers
concerning the cross-section and the design, as well as the installation situation and the
ventilation conditions must be observed.
•The device contains electrical and electronic components and must not be disposed of as
household refuse. All locally valid regulations and requirements must be observed.
Product features
Operating modeThe actuator moves the damper to the operating position at the same time as tensioning the
return spring. The damper is turned back to the fail-safe position by spring force when the
supply voltage is interrupted.
Simple direct mounting on the damper shaft with a universal shaft clamp, supplied with an
anti-rotation device to prevent the actuator from rotating.
By using the hand crank the damper can be actuated manually and engaged with the locking
switch at any position. Unlocking is carried out manually or automatically by applying the
operating voltage.
Adjustable angle of rotation with mechanical end stops.
The actuator is overload protected, requires no limit switches and automatically stops when
the end stop is reached.
Simple direct mounting
Manual override
Adjustable angle of rotation
High functional reliability
Accessories
Electrical accessoriesDescription
Auxiliary switch 2x SPDT
Feedback potentiometer 1 kΩ
Mechanical accessoriesDescription
Shaft extension 240 mm ø20 mm for damper shaft ø8...22.7 mm
Type
S2A-F
P1000A-F
Type
AV8-25
24A • en-gb • 2023-12-11 • Subject to change2 / 4
Accessories
Description
End stop indicator
Shaft clamp reversible, for central mounting, for damper shafts ø12.7 /
19.0 / 25.4 mm
Ball joint suitable for damper crank arm KH8 / KH10
Ball joint suitable for damper crank arm KH8
Damper crank arm Slot width 8.2 mm, clamping range ø10...18 mm
Actuator arm, for 3/4" shafts, clamping range ø10...22 mm, Slot width
8.2 mm
Form fit insert 10x10 mm, Multipack 20 pcs.
Form fit insert 12x12 mm, Multipack 20 pcs.
Form fit insert 15x15 mm, Multipack 20 pcs.
Form fit insert 16x16 mm, Multipack 20 pcs.
Mounting kit for linkage operation for flat and side installation
Baseplate extension
Anti-rotation mechanism 230 mm, Multipack 20 pcs.
Hand crank 63 mm
Type
IND-AFB
K7-2
KG10A
KG8
KH8
KH-AFB
SF24A
ZF10-NSA-F
ZF12-NSA-F
ZF15-NSA-F
ZF16-NSA-F
ZG-AFB
Z-SF
Z-ARS230L
ZKN2-B
Electrical installation
Supply from isolating transformer.
Parallel connection of other actuators possible. Observe the performance data.
Wire colours:
1 = black
2 = red
Wiring diagrams
AC/DC 24 V, open/close
24A • en-gb • 2023-12-11 • Subject to change3 / 4
Dimensions
Spindle length
Min. 85
Min. 15
Clamping range
SF24A
24A • en-gb • 2023-12-11 • Subject to change4 / 4