NFB Technical Documentation

NFB24, NFB24-S, NFX24, NFX24-S
On/Off, Spring Return, 24 V
• Torque min. 90 in-lb, for control of air dampers
Application
For On/Off, fail-safe control of dampers in HVAC systems. Actuator sizing should
be done in accordance with the damper manufacturer’s specifications. Control is
On/Off from an auxiliary contact, or a manual switch.
The actuator is mounted directly to a damper shaft up to 1.05” in diameter by
means of its universal clamp. A crank arm and several mounting brackets are
available for applications where the actuator cannot be direct coupled to the
damper shaft.
Operation
The NFB and NFX series actuators provide true spring return operation for
reliable fail-safe application and positive close off on air tight dampers. The
spring return system provides constant torque to the damper with, and without,
power applied to the actuator.
The NFB and NFX series provides 95° of rotation and is provided with a
graduated position indicator showing 0° to 95°.
Power supply
Power consumption
Transformer sizing
Electrical connection
NFB24...
24 VAC ± 20% 50/60 Hz
24 VDC +20% / -10%
running 6 W
holding 2.5 W
8.5 VA (class 2 power source)
3 ft, 18 GA appliance cable, 1/2" conduit
connector
-S models: Two 3 ft, 18 gauge appliance
cables with 1/2” conduit connectors
NFX24...
3 ft [1m], 10 ft [3m] or 16 ft [5m] 18 GA
appliance or plenum cables, with or without
1/2” conduit connector
-S models: Two 3 ft [1m], 10 ft [3m] or
16 ft [5m] appliance cables, with or without
1/2" conduit connectors
Overload protection
Electronic throughout 0 to 95° rotation
Control
On/Off
Torque
90 in-lb [10 Nm] minimum
Direction of rotation
spring reversible with CW/CCW mounting
Mechanical angle of rotation
95° (adjustable with mechanical end stop, 35°
to 95°)
Running time
motor < 75 sec
spring 20 sec @ -4°F to 122°F [-20°C to 50°C];
< 60 sec @ -22°F [-30°C]
Position indication
visual indicator, 0° to 95°
(0° is full spring return position)
Manual override
5 mm hex crank (³⁄₁₆" Allen), supplied
Humidity
max. 95% RH non-condensing
Ambient temperature
-22°F to 122°F [-30°C to 50°C]
Storage temperature
-40°F to 176°F [-40°C to 80°C]
Housing
Nema 2, IP54, Enclosure Type2
Housing material
Zinc coated metal and plastic casing
cULus acc. to UL60730-1A/-2-14,
Agency listings †
CAN/CSA E60730-1:02, CE acc. to
2004/108/EC & 2006/95/EC
Noise level
<50dB(A) motor @ 75 seconds
≤62dB(A) spring return
Servicing
maintenance free
Quality standard
ISO 9001
Weight
4.15 lbs (1.9 kg); 4.25 lbs (1.9 kg) with switches
The actuator may be stalled anywhere in its normal rotation without the need of
mechanical end switches.
The NFB24-S and NFX24-S versions are provided with 2 built-in auxiliary
switches. These SPDT switches are provided for safety interfacing or signaling,
for example, for fan start-up. The switching function at the fail-safe position is
fixed at +10°, the other switch function is adjustable between +10° to +90°. The
NFB24, NFB24-S, NFX24 and NFX24-S actuator is shipped at +5° (5° from full
fail-safe) to provide automatic compression against damper gaskets for tight
shut-off.
Dimensions (Inches [mm])
K7-2 (supplied)
1/2" Centered
(Default)
3/4" Centered
(Field Selectable)
1.05" Centered
(Field Selectable)
L30028 - 12/09 - Subject to change. © Belimo Aircontrols (USA), Inc.
NFB24, NFB24-S, NFX24, NFX24-S
† Rated Impulse Voltage 800V, Type of action 1.AA (1.AA.B for -S version), Control Pollution Degree 3.
NFB24-S, NFX24-S
Auxiliary switches
2 x SPDT 3A (0.5A) @ 250 VAC, UL Approved
one set at +10°, one adjustable 10° to 90°
800-543-9038 USA
60
866-805-7089 CANADA
WAFBNFBDim
Technical Data
203-791-8396 LATIN AMERICA
NFB24, NFB24-S, NFX24, NFX24-S
On/Off, Spring Return, 24 V
Wiring Diagrams
AV 8-25
IND-AFB
KH-AFB
K7-2
TF-CC US
Tool-06
ZG-100
ZG-101
ZG-118
ZG-AFB
ZG-AFB118
ZS-100
ZS-150
ZS-260
ZS-300
Shaft extension
Damper position indicator
Crankarm
Universal clamp for up to 1.05” dia jackshafts
Conduit fitting
8mm and 10 mm wrench
Universal mounting bracket
Universal mounting bracket
Mounting bracket for Barber Colman® MA 3../4.., Honeywell®
Mod III or IV or Johnson® Series 100 replacement or new
crankarm type installations
Crankarm adaptor kit
Crankarm adaptor kit
Weather shield (metal)
Weather shield (polycarbonate)
Explosion-proof housing
NEMA 4X housing
Note: When using NFB24, NFB24-S, NFX24, NFX24-S actuators, only use accessories
listed on this page.
For actuator wiring information and diagrams, refer to Belimo Wiring Guide.
Typical Specification
On/Off spring return damper actuators shall be direct coupled type which
require no crankarm and linkage and be capable of direct mounting to a
jackshaft up to a 1.05” diameter. The actuators must be designed so that they
may be used for either clockwise or counterclockwise fail-safe operation.
Actuators shall be protected from overload at all angles of rotation. If required,
2 SPDT auxiliary switch shall be provided having the capability of one being
adjustable. Actuators with auxiliary switches must be constructed to meet the
requirements for Double Insulation so an electrical ground is not required to
meet agency listings. Actuators shall be cULus Approved and have a 5 year
warranty, and be manufactured under ISO 9001 International Quality Control
Standards. Actuators shall be as manufactured by Belimo.
Provide overload protection and disconnect as required.
1
CAUTION Equipment Damage!
2
Actuators may be connected in parallel.
Power consumption and input impedance must be observed.
Actuators may also be powered by 24 VDC.
3
For end position indication, interlock control, fan startup, etc., NFB24S and NFX24-S incorporates two built-in auxiliary switches: 2 x SPDT,
3A (0.5A) @250 VAC, UL Approved, one switch is fixed at +10°, one is
adjustable 10° to 90°.
4
Meets cULus requirements without the need of an electrical ground
connection.
WARNING Live Electrical Components!
During installation, testing, servicing and troubleshooting of this product, it may
be necessary to work with live electrical components. Have a qualified licensed electrician
or other individual who has been properly trained in handling live electrical components
perform these tasks. Failure to follow all electrical safety precautions when exposed to live
electrical components could result in death or serious injury.
1
W063_NFB(X)
Accessories
24 VAC Transformer
1 Common
Line
Volts
2 + Hot
3
NFB24, NFB24-S
NFX24, NFX24-S
2
L30028 - 12/09 - Subject to change. © Belimo Aircontrols (USA), Inc.
W064_NFB(X)_-S
On/Off wiring for NFB24, NFX24
NFB24-S
NFX24-S
Auxiliary Switches for NFB24-S, NFX24-S
800-543-9038 USA
866-805-7089 CANADA
203-791-8396 LATIN AMERICA
61
NFBUP, NFBUP-S, NFXUP, NFXUP-S
On/Off, Spring Return, 24 to 240 VAC
Torque min. 90 in-lb, for control of air dampers
Application
For On/Off, fail-safe control of dampers in HVAC systems. Actuator sizing should
be done in accordance with the damper manufacturer’s specifications. Control is
On/Off from an auxiliary contact, or a manual switch.
The actuator is mounted directly to a damper shaft up to 1.05” in diameter by
means of its universal clamp. A crank arm and several mounting brackets are
available for applications where the actuator cannot be direct coupled to the
damper shaft.
Operation
The NFB and NFX series actuators provide true spring return operation for
reliable fail-safe application and positive close off on air tight dampers. The
spring return system provides constant torque to the damper with, and without,
power applied to the actuator.
The NFB and NFX series provides 95° of rotation and is provided with a
graduated position indicator showing 0° to 95°.
Power consumption
Transformer sizing
Electrical connection
NFBUP...
24...240 VAC -20% / +10%, 50/60 Hz
24...125 VDC ±10%
running 6 W
holding 2.5 W
9.5 VA (class 2 power source)
3 ft, 18 GA appliance cable, 1/2" conduit
connector
-S models: Two 3 ft, 18 gauge appliance
cables with 1/2” conduit connectors
NFXUP...
3 ft [1m], 10 ft [3m] or 16 ft [5m] 18 GA
appliance cable, with or without 1/2” conduit
connector
-S models: Two 3 ft [1m], 10 ft [3m] or
16 ft [5m] appliance cables with or without
1/2" conduit connectors
Overload protection
Electronic throughout 0 to 95° rotation
Control
On/Off
Torque
90 in-lb [10 Nm] minimum
Direction of rotation
spring reversible with CW/CCW mounting
Mechanical angle of rotation
95° (adjustable with mechanical end stop, 35°
to 95°)
Running time
motor < 75 sec
spring 20 sec @ -4°F to 122°F [-20°C to 50°C];
< 60 sec @ -22°F [-30°C]
Position indication
visual indicator, 0° to 95°
(0° is full spring return position)
Manual override
5 mm hex crank (³⁄₁₆" Allen), supplied
Humidity
max. 95% RH non-condensing
Ambient temperature
-22°F to 122°F [-30°C to 50°C]
Storage temperature
-40°F to 176°F [-40°C to 80°C]
Housing
Nema 2, IP54, Enclosure Type2
Housing material
Zinc coated metal and plastic casing
cULus acc. to UL60730-1A/-2-14,
Agency listings †
CAN/CSA E60730-1:02, CE acc. to
2004/108/EC & 2006/95/EC
Noise level
<50dB(A) motor @ 75 seconds
≤62dB(A) spring return
Servicing
maintenance free
Quality standard
ISO 9001
Weight
4.15 lbs (1.9 kg), 4.25 lbs (1.9 kg) with
switches
The actuator may be stalled anywhere in its normal rotation without the need of
mechanical end switches.
The NFBUP-S and NFXUP-S versions are provided with 2 built-in auxiliary
switches. These SPDT switches provide safety interfacing or signaling, for
example, for fan start-up. The switching function at the fail-safe position is fixed
at +10°, the other switch function is adjustable between +10° to +90°. The
NFBUP, NFBUP-S, NFXUP and NFXUP-S actuator is shipped at +5° (5° from full
fail-safe) to provide automatic compression against damper gaskets for tight
shut-off.
Dimensions (Inches [mm])
K7-2 (supplied)
1/2" Centered
(Default)
3/4" Centered
(Field Selectable)
1.05" Centered
(Field Selectable)
L30028 - 12/09 - Subject to change. © Belimo Aircontrols (USA), Inc.
NFBUP, NFBUP-S, NFXUP, NFXUP-S
Power supply
† Rated Impulse Voltage 4kV, Type of action 1.AA (1.AA.B for -S version), Control Pollution Degree 3.
NFBUP-S, NFXUP-S
Auxiliary switches
2 x SPDT 3A (0.5A) @ 250 VAC, UL Approved
one set at +10°, one adjustable 10° to 90°
800-543-9038 USA
62
866-805-7089 CANADA
WAFBNFBDim
Technical Data
203-791-8396 LATIN AMERICA
NFBUP, NFBUP-S, NFXUP, NFXUP-S
On/Off, Spring Return, 24 to 240 VAC
Wiring Diagrams
Accessories
AV 8-25
IND-AFB
K7-2
KH-AFB
TF-CC US
Tool-06
ZG-100
ZG-101
ZG-118
ZG-AFB
ZG-AFB118
ZS-100
ZS-150
ZS-260
ZS-300
Shaft extension
Damper position indicator
Universal clamp for up to 1.05” dia jackshafts
Crankarm
Conduit fitting
8mm and 10 mm wrench
Universal mounting bracket
Universal mounting bracket
Mounting bracket for Barber Colman® MA 3../4.., Honeywell®
Mod III or IV or Johnson® Series 100 replacement or new
crankarm type installations
Crankarm adaptor kit
Crankarm adaptor kit
Weather shield (metal)
Weather shield (polycarbonate)
Explosion-proof housing
NEMA 4X housing
Note: When using NFBUP, NFBUP-S, NFXUP, NFXUP-S actuators, only use accessories
listed on this page.
For actuator wiring information and diagrams, refer to Belimo Wiring Guide.
Typical Specification
Provide overload protection and disconnect as required.
1
CAUTION Equipment Damage!
2
Actuators may be connected in parallel.
Power consumption and input impedance must be observed.
No ground connection is required.
3
For end position indication, interlock control, fan startup, etc., NFBUPS and NFXUP-S incorporates two built-in auxiliary switches: 2 x SPDT,
3A (0.5A) @250 VAC, UL Approved, one switch is fixed at +10°, one is
adjustable 10° to 90°.
4
Meets cULus requirements without the need of an electrical ground
connection.
WARNING Live Electrical Components!
During installation, testing, servicing and troubleshooting of this product, it may
be necessary to work with live electrical components. Have a qualified licensed electrician
or other individual who has been properly trained in handling live electrical components
perform these tasks. Failure to follow all electrical safety precautions when exposed to live
electrical components could result in death or serious injury.
W066_NFB(X)UP
On/Off spring return damper actuators shall be direct coupled type which
require no crankarm and linkage and be capable of direct mounting to a
jackshaft up to a 1.05” diameter. The actuators must be designed so that they
may be used for either clockwise or counterclockwise fail-safe operation.
Actuators shall be protected from overload at all angles of rotation. If required,
2 SPDT auxiliary switch shall be provided having the capability of one being
adjustable. Actuators with auxiliary switches must be constructed to meet the
requirements for Double Insulation so an electrical ground is not required to
meet agency listings. Actuators shall be cULus Approved and have a 5 year
warranty, and be manufactured under ISO 9001 International Quality Control
Standards. Actuators shall be as manufactured by Belimo.
L30028 - 12/09 - Subject to change. © Belimo Aircontrols (USA), Inc.
NFBUP, NFBUP-S
NFXUP, NFBUP-S
W067_NFB(X)UP-S
On/Off wiring for NFBUP, NFXUP
NFBUP-S
NFXUP-S
Auxiliary Switches for NFBUP-S, NFXUP-S
800-543-9038 USA
866-805-7089 CANADA
203-791-8396 LATIN AMERICA
63
NFB24-SR, NFB24-SR-S, NFX24-SR, NFX24-SR-S
Proportional, Spring Return, 24 V, for 2 or 10 VDC or 4 to 20 mA Control Signal
Torque min. 90 in-lb, for control of air dampers
Application
For proportional modulation of dampers in HVAC systems. Actuator sizing should
be done in accordance with the damper manufacturer’s specifications.
The actuator is mounted directly to a damper shaft up to 1.05” in diameter by
means of its universal clamp. A crank arm and several mounting brackets are
available for applications where the actuator cannot be direct coupled to the
damper shaft.
The actuator operates in response to a 2 to 10 VDC, or with the addition of a
500Ω resistor, a 4 to 20 mA control input from an electronic controller or
positioner. A 2 to 10 VDC feedback signal is provided for position indication. Not
to be used for a master-slave application.
Operation
The NFB and NFX series actuators provide true spring return operation for
reliable fail-safe application and positive close-off on air tight dampers. The
spring return system provides constant torque to the damper with, and without,
power applied to the actuator.
NFB24-SR, NFB24-SR-S,
NFX24-SR, NFX24-SR-S
Power consumption
Transformer sizing
Electrical connection
NFB...
24 VAC ±20%, 50/60 Hz
24 VDC +20% / -10%
running 3.5 W
holding 2.5 W
6 VA (class 2 power source)
NFX...
Overload protection
Operating range Y
Input impedance
Feedback output U
Torque
Direction of rotation
spring
motor
Mechanical angle of rotation
Running time
spring
motor
Position indication
Manual override
Humidity
Ambient temperature
Storage temperature
Housing
Housing material
Agency listings†
Noise level
Servicing
Quality standard
Weight
The NFB and NFX series provides 95° of rotation and is provided with a
graduated position indicator showing 0° to 95°.
3 ft, 18 GA appliance cable, 1/2" conduit
connector
-S models: Two 3 ft, 18 gauge appliance
cables with 1/2” conduit connectors
3 ft [1m], 10 ft [3m] or 16 ft [5m] 18 GA
appliance or plenum cables, with or without
1/2” conduit connector
-S models: Two 3 ft [1m], 10 ft [3m] or
16 ft [5m] appliance cables, with or without
1/2" conduit connectors
Electronic throughout 0 to 95° rotation
2 to 10 VDC, 4 to 20mA
100 kΩ for 2 to 10 VDC (0.1 mA)
500 Ω for 4 to 20 mA
2 to 10 VDC (max. 0.5 mA)
90 in-lb [10 Nm] minimum
reversible with CW/CCW mounting
reversible with built-in switch
95° (adjustable with mechanical end stop, 35°
to 95°)
< 20 sec @ -4°F to 122°F [-20°C to 50°C];
< 60 sec @ -22°F [-30°C]
95 sec
visual indicator, 0° to 95°
(0° is full spring return position)
5 mm hex crank (³⁄₁₆" Allen), supplied
max. 95% RH non-condensing
-22°F to 122°F [-30°C to 50°C]
-40°F to 176°F [-40°C to 80°C]
Nema 2, IP54, Enclosure Type2
Zinc coated metal and plastic casing
cULus acc. to UL60730-1A/-2-14, CAN/CSA
E60730-1:02, CE acc. to 2004/108/EC &
2006/95/EC
≤40dB(A) motor @ 95 seconds
≤62dB(A) spring return
maintenance free
ISO 9001
4.15 lbs (1.9 kg); 4.25 lbs (1.9 kg) with switches
The NFB24-SR and NFX24-SR uses a brushless DC motor which is controlled by
an Application Specific Integrated Circuit (ASIC) and a microprocessor. The
microprocessor provides the intelligence to the ASIC to provide a constant
rotation rate and to know the actuator’s exact fail-safe position. The ASIC
monitors and controls the brushless DC motor’s rotation and provides a digital
rotation sensing function to prevent damage to the actuator in a stall condition.
The actuator may be stalled anywhere in its normal rotation without the need of
mechanical end switches.
The NFB24-SR-S and NFX24-SR-S versions are provided with 2 built-in auxiliary
switches. These SPDT switches provide safety interfacing or signaling, for
example, for fan start-up. The switching function at the fail-safe position is fixed
at +10°, the other switch function is adjustable between +10° to +90°. The
NFB24-SR, NFB24-SR-S, NFX24-SR and NFX24-SR-S actuator is shipped at +5°
(5° from full fail-safe) to provide automatic compression against damper gaskets
for tight shut-off.
Dimensions (Inches [mm])
K7-2 (supplied)
1/2" Centered
(Default)
3/4" Centered
(Field Selectable)
1.05" Centered
(Field Selectable)
† Rated Impulse Voltage 800V, Type of action 1.AA (1.AA.B for -S version), Control Pollution Degree 3.
NFB24-SR-S, NFX24-SR-S
Auxiliary switches
2 x SPDT 3A (0.5A) @ 250 VAC, UL Approved
one set at +10°, one adjustable 10° to 90°
800-543-9038 USA
64
866-805-7089 CANADA
203-791-8396 LATIN AMERICA
L30028 - 12/09 - Subject to change. © Belimo Aircontrols (USA), Inc.
Power supply
WAFBNFBDim
Technical Data
NFB24-SR, NFB24-SR-S, NFX24-SR, NFX24-SR-S
Proportional, Spring Return, 24 V, for 2 or 10 VDC to 4 to 20 mA Control Signal
Accessories
WARNING Live Electrical Components!
ZG-AFB
ZG-AFB118
ZS-100
ZS-150
ZS-260
ZS-300
NOTE: When using NFB24-SR, NFB24-SR-S, NFX24-SR and NFX24-SR-S actuators, only
use accessories listed on this page.
For actuator wiring information and diagrams, refer to Belimo Wiring Guide.
During installation, testing, servicing and troubleshooting of this product, it may
be necessary to work with live electrical components. Have a qualified licensed electrician
or other individual who has been properly trained in handling live electrical components
perform these tasks. Failure to follow all electrical safety precautions when exposed to live
electrical components could result in death or serious injury.
1
24 VAC Transformer
Line
Volts
Control Signal (–)
2 to 10 VDC (+)
1 Common
3
2 + Hot
3 Y1 Input, 2 to 10V
5 U Output 2 to 10V
NFB24-SR, NFB24-SR-S
NFX24-SR, NFX24-SR-S
4 to 20 mA control of NFB24-SR and NFX24-SR with
2 to 10 VDC feedback output
2
W064_NFB(X)24_SR_-S
L30028 - 12/09 - Subject to change. © Belimo Aircontrols (USA), Inc.
NFB24-SR, NFB24-SR-S
NFX24-SR, NFX24-SR-S
Wiring Diagrams
1
Provide overload protection and disconnect as required.
CAUTION Equipment Damage!
Actuators may be connected in parallel.
Power consumption and input impedance must be observed.
2
Up to 4 actuators may be connected in parallel. With 4 actuators
wired to one 500 Ω resistor. Power consumption must be observed.
3
Actuator may also be powered by 24 VDC.
4
5
2
2 to 10 VDC control of NFB24-SR and NFX24-SR
Typical Specification
Spring return control damper actuators shall be direct coupled type which
require no crankarm and linkage and be capable of direct mounting to a jackshaft
up to a 1.05” diameter. The actuator must provide proportional damper control in
response to a 2 to 10 VDC or, with the addition of a 500Ω resistor, a 4 to 20 mA
control input from an electronic controller or positioner. The actuators must be
designed so that they may be used for either clockwise or counterclockwise failsafe operation. Actuators shall use a brushless DC motor controlled by a
microprocessor and be protected from overload at all angles of rotation. Run
time shall be constant, and independent of torque. A 2 to 10 VDC feedback signal
shall be provided for position feedback. Actuators shall be cULus Approved and
have a 5 year warranty, and be manufactured under ISO 9001 International
Quality Control Standards. Actuators shall be as manufactured by Belimo.
W068_NFB(X)24-SR
Shaft extension
Damper position indicator
Crankarm
Universal clamp for up to 1.05” dia jackshafts
Conduit fitting
8mm and 10 mm wrench
Universal mounting bracket
Universal mounting bracket
Mounting bracket for Barber Colman® MA 3../4.., Honeywell®
Mod III or IV or Johnson® Series 100 replacement or new
crankarm type installations
Crankarm adaptor kit
Crankarm adaptor kit
Weather shield (metal)
Weather shield (polycarbonate)
Explosion-proof housing
NEMA 4X housing
W069_NFB(X)24-SR
AV 8-25
IND-AFB
KH-AFB
K7-2
TF-CC US
Tool-06
ZG-100
ZG-101
ZG-118
For end position indication, interlock control, fan startup, etc., NFB24SR-S and NFX24-SR-S incorporates two built-in auxiliary switches:
2 x SPDT, 3A (0.5A) @250 VAC, UL Approved, one switch is fixed at
+10°, one is adjustable 10° to 90°.
NFB24-SR-S
NFX24-SR-S
Auxiliary switches for NFB24-SR-S, NFX24-SR-S
Only connect common to neg. (–) leg of control circuits
The ZG-R01 500 Ω resistor converts the 4 to 20 mA control signal to
2 to 10 VDC.
800-543-9038 USA
866-805-7089 CANADA
203-791-8396 LATIN AMERICA
65
NFB24-MFT, NFB24-MFT-S, NFX24-MFT, NFX24-MFT-S
Proportional, Spring Return, Multi-Function Technology®
• Torque min. 90 in-lb
• Control 2 to 10 VDC (DEFAULT)
• Feedback 2 to 10 VDC (DEFAULT)
Application
For proportional modulation of dampers and control valves in HVAC systems.
The NFB24-MFT and NFX24-MFT provides mechanical spring return operation for
reliable fail-safe application.
Default/Configuration
NFB24-MFT, NFB24-MFT-S,
NFX24-MFT, NFX24-MFT-S
Power consumption
Transformer sizing
Electrical connection
NFB...
24 VAC ±20%, 50/60 Hz
24 VDC +20% / -10%
running 6.5 W
holding 3 W
9 VA (class 2 power source)
NFX...
Overload protection
Operating range Y*
Input impedance
Feedback output U*
Torque
Direction of rotation*
spring
motor
Mechanical angle of rotation*
Running time
spring
motor*
Angle of Rotation Adaptation*
Override control*
Position indication
Manual override
Humidity
Ambient temperature
Storage temperature
Housing
Housing material
Agency listings†
Noise level
Servicing
Quality standard
Weight
3 ft, 18 GA appliance cable, 1/2" conduit
connector
-S models: Two 3 ft, 18 gauge appliance
cables with 1/2” conduit connectors
3 ft [1m], 10 ft [3m] or 16 ft [5m] 18 GA
appliance or plenum cables, with or without
1/2” conduit connector
-S models: Two 3 ft [1m], 10 ft [3m] or
16 ft [5m] appliance cables with or without
1/2" conduit connectors
Electronic throughout 0 to 95° rotation
2 to 10 VDC, 4 to 20mA (default)
Variable (VDC, PWM, Floating Point, On/Off)
100 kΩ for 2 to 10 VDC (0.1 mA)
500 Ω for 4 to 20 mA
1500 Ω for PWM, Floating Point, On/Off
2 to 10 VDC (max. 0.5 mA)
90 in-lb [10 Nm] minimum
reversible with CW/CCW mounting
reversible with built-in switch
95° (adjustable with mechanical end stop, 35°
to 95°)
< 20 sec @ -4°F to 122°F [-20°C to 50°C];
< 60 sec @ -22°F [-30°C]
150 secs (default), variable (40 to 220 secs)
Off (Default)
Min Position = 0%
Mid. Position = 50%
Max. Position = 100%
visual indicator, 0° to 95°
(0° is full spring return position)
5 mm hex crank (³⁄₁₆" Allen), supplied
max. 95% RH non-condensing
-22°F to 122°F [-30°C to 50°C]
-40°F to 176°F [-40°C to 80°C]
Nema 2, IP54, Enclosure Type2
Zinc coated metal and plastic casing
cULus acc. to UL60730-1A/-2-14,
CAN/CSA E60730-1:02, CE acc. to
2004/108/EC & 2006/95/EC
≤40dB(A) motor @ 150 secs, run time
dependent
≤62dB(A) spring return
maintenance free
ISO 9001
4.2 lbs (1.9 kg), 4.3 lbs (2.0 kg) with
switches
These parameters can be changed by three means:
• Pre-set configurations from Belimo
• Custom configurations from Belimo
• Configurations set by the customer using the MFT PC tool (version 3.4 or
higher) software application.
• Handheld ZTH-GEN
Operation
The NFB24-MFT, NFX24-MFT actuator provides 95° of rotation and is provided
with a graduated position indicator showing 0° to 95°. The actuator will
synchronize the 0° mechanical stop or the damper or valves mechanical stop and
use this point for its zero position during normal control operations.
The actuator uses a brushless DC motor which is controlled by an Application
Specific Integrated Circuit (ASIC) and a microprocessor. The microprocessor
provides the intelligence to the ASIC to provide a constant rotation rate and to
know the actuator’s exact position. The ASIC monitors and controls the
brushless DC motor’s rotation and provides a Digital Rotation Sensing (DRS)
function to prevent damage to the actuator in a stall condition. The position
feedback signal is generated with out the need for mechanical feedback
potentiometers using DRS. The actuator may be stalled anywhere in its normal
rotation without the need of mechanical end switches.
The NFB24-MFT, NFB24-MFT-S, NFX24-MFT and NFX24-MFT-S is mounted
directly to control shafts up to 1.05” diameter by means of its universal clamp
and anti-rotation bracket. A crankarm and several mounting brackets are
available for damper applications where the actuator cannot be direct coupled to
the damper shaft. The spring return system provides minimum specified torque
to the application during a power interruption. The NFB24-MFT, NFB24-MFT-S,
NFX24-MFT and NFX24-MFT-S actuator is shipped at +5° (5° from full fail-safe)
to provide automatic compression against damper gaskets for tight shut-off.
NOTE: Refer to Multi-Function Technology documentation.
Dimensions (Inches [mm])
K7-2 (supplied)
1/2" Centered
(Default)
3/4" Centered
(Field Selectable)
1.05" Centered
(Field Selectable)
*Variable when configured with MFT options.
† Rated Impulse Voltage 800V, Type of action 1.AA (1.AA.B for -S version), Control Pollution Degree 3.
Programmed for 40 sec motor run time. At 150 sec motor run time, transformer sizing is 6.5 VA
and power consumption is 4.5 W running / 3 W holding.
NFB24-MFT-S, NFX24-MFT-S
Auxiliary switches
2 x SPDT 3A (0.5A) @ 250 VAC, UL Approved
one set at +10°, one adjustable 10° to 90°
800-543-9038 USA
66
866-805-7089 CANADA
203-791-8396 LATIN AMERICA
L30028 - 12/09 - Subject to change. © Belimo Aircontrols (USA), Inc.
Power supply
Default parameters for 2 to 10 VDC applications of the NFB24-MFT and NFX24MFT actuator are assigned during manufacturing. If required, custom versions of
the actuator can be ordered. The parameters noted in the Technical Data table are
variable.
WAFBNFBDim
Technical Data
NFB24-MFT, NFB24-MFT-S, NFX24-MFT, NFX24-MFT-S
Proportional, Spring Return, Multi-Function Technology®
Shaft extension
Damper position indicator
Crankarm
Universal clamp for up to 1.05” dia jackshafts
Conduit fitting
8mm and 10 mm wrench
Universal mounting bracket
Universal mounting bracket
Mounting bracket for Barber Colman® MA 3../4.., Honeywell®
Mod III or IV or Johnson® Series 100 replacement or new
crankarm type installations
Crankarm adaptor kit
Crankarm adaptor kit
Weather shield (metal)
Weather shield (polycarbonate)
Explosion-proof housing
NEMA 4X housing
ZG-AFB
ZG-AFB118
ZS-100
ZS-150
ZS-260
ZS-300
NFB24-MFT-S
NFX24-MFT-S
Auxiliary Switches for NFB24-MFT-S, NFX24-MFT-S
W399_08
AV 8-25
IND-AFB
KH-AFB
K7-2
TF-CC US
Tool-06
ZG-100
ZG-101
ZG-118
W600_A
Accessories
NOTE: When using NFB24-MFT, NFB24-MFT-S, NFX24-MFT and NFX24-MFT-S actuators,
only use accessories listed on this page.
For actuator wiring information and diagrams, refer to Belimo Wiring Guide.
Typical Specification
VDC/4-20 mA
W399_08
Spring return control damper actuators shall be direct coupled type which
require no crankarm and linkage and be capable of direct mounting to a jackshaft
up to a 1.05” diameter. The actuator must provide proportional damper control in
response to a 2 to 10 VDC or, with the addition of a 500Ω resistor, a 4 to 20 mA
control input from an electronic controller or positioner. The actuators must be
designed so that they may be used for either clockwise or counterclockwise failsafe operation. Actuators shall use a brushless DC motor controlled by a
microprocessor and be protected from overload at all angles of rotation. Run
time shall be constant, and independent of torque. A 2 to 10 VDC feedback signal
shall be provided for position feedback. Actuators shall be cULus Approved and
have a 5 year warranty, and be manufactured under ISO 9001 International
Quality Control Standards. Actuators shall be as manufactured by Belimo.
2
3
4
5
8
9
Provide overload protection and disconnect as required.
PWM
CAUTION Equipment Damage!
W399_08
1
Actuators may be connected in parallel if not mechanically mounted to the
same shaft. Power consumption and input impedance must be observed.
Actuators may also be powered by 24 VDC.
Position feedback cannot be used with Triac sink controller.
The actuator internal common reference is not compatible.
Control signal may be pulsed from either the Hot (source)
or the Common (sink) 24 VAC line.
Contact closures A & B also can be triacs.
A & B should both be closed for triac source and open for triac sink.
For triac sink the common connection from the actuator
must be connected to the hot connection of the controller.
On/Off control
W399_08
L30028 - 12/09 - Subject to change. © Belimo Aircontrols (USA), Inc.
Wiring Diagrams
Meets UL requirements without the need of an electrical ground
connection.
The ZG-R01 500 Ω resistor may be used.
WARNING Live Electrical Components!
During installation, testing, servicing and troubleshooting of this product, it may
be necessary to work with live electrical components. Have a qualified licensed
electrician or other individual who has been properly trained in handling live
electrical components perform these tasks. Failure to follow all electrical safety
precautions when exposed to live electrical components could result in death or
serious injury.
800-543-9038 USA
Floating Point control
866-805-7089 CANADA
203-791-8396 LATIN AMERICA
67