For damper areas up to 35 sq-ft* (For lower torque, see NF, LF, or TF series)
Applications
Remove for
3/4” to 1.05”
shafts
ZG106 or ZG107 bracket
New standard clamp fits standard 1/2” shafts to 1.05” jackshafts.
All Actuators
have BDCM
AF Series - At A Glance
Torque: 133 in-lb
Power supply:24 VAC/DC
120 VAC
230 VAC
Control signal:On/Off
2 to 10 VDC
Multi-function**
0 to 135 7
3 k7 NTC
0 to 20 V phasecut
Feedback signal:2 to 10 VDC
VDC variable**
Running time motor: 150 sec constant
95 sec constant
Adj. 75 to 300 sec.***
spring: <20
Brushless DC Motor
External direction of rotation switch
Manual override
Plenum rated cable, 18 GA
Appliance rated cable, 18 GA
Built-in auxiliary switch 2 SPDT
Type 10 thermistor
sec
Mount directly to 1.05” jackshafts.
AF24 US (p. 18)
AF120 US (p. 20)
AF24-S US (p. 18)
AF230-S US (p. 20)
AF230 US (p. 02)
AF120-S US (p. 20)
Linkage solutions are available when direct coupling is not possible.
(See Mounting Methods Guide and Mechanical Accessories
Documentation page 132)
AF24-SR US (p. 22)
AF24-ECON R03US (p. 26)
AFA24-SR US (p. 24)
AF24-PC US (p. 28)
AF24-MFT US (p. 30)
AF24-MFT-S US (p. 30)
LLLLLLLLLLLLL
LLLLLLLLL
LL
LL
LLLLLL
LL
LL
L
L
L
LLL
LLL
LLLLLLLLL
L
LLL
LLLLLLLLLLLLL
LLLLLLLLLLLLL
LLLLLL
LLLLLLLLLLLLL
LL
LLLLLLLLLLL
LLLLL
Installation instructions......(p. 34–38) General wiring......(p. 41) Start-up and checkout......(p. 42) Electrical operations......(p. 40)
*Based on 4 in-lb/ft2 damper torque loading. Parallel blade. No edge seals. **Default 2 to 10 VDC. ***Default 150 seconds.
Easy installation. Accuracy and repeatability.
Low power consumption. No maintenance.
L
Long Service Life.
Components tested before assembly. Every product tested before shipment.
30+ years direct coupled actuator design.
800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA
17
Page 3
AF24(-S) US
On/Off, Spring Return Fail-Safe, 24V
Technical DataAF24... US
Power supply24 VAC ± 20% 50/60 Hz
24 VDC ± 10%
Power consumption running 5 W
holding 1.5 W
Transformer sizing10 VA (class 2 power source)
Electrical connection3 ft, 18 GA appliance cable
1/2” conduit connector
Electrical protectionauxiliary switches are double insulated
Overload protectionelectronic throughout 0° to 95° rotation
Angle of rotation95°, adjustable 35 to 95° w/ZDB-AF2 US
Torque133 in-lb [15 Nm] constant
Direction of rotationreversible with CW/CCW mounting
Position indicationvisual indicator, 0° to 95°
(0° is spring return position)
Manual override3mm hex crank (shipped w/actuator)
Auxiliary switches 2 x SPDT 7A (2.5A) @ 250 VAC, UL Approved
one set at +5°, one adjustable 25° to 85°
Running time150 sec. constant, independent of load, spring
return < 20 sec
Humidity5 to 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 type 2 / IP54
Housing materialzinc coated steel
Agency listingscULus acc. to UL 873 and
CAN/CSA C22.2 No. 24-93
Noise level max. 45 dB (A)
Servicingmaintenance free
Quality standardISO 9001
Weight6.0 lbs (2.7 kg)
Torque min. 133 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 crankarm and several mounting brackets are
available for applications where the actuator cannot be direct coupled to the
damper shaft.
Operation
The AF 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 consistent torque to the damper with, and without, power applied to the
actuator.
The AF series provide 95° of rotation and are provided with a graduated position
indicator showing 0° to 95°. The AF has a unique manual positioning
mechanism which allows the setting of any damper position within its 95° of
rotation. The AF series actuators are shipped at +5° (5° from full fail-safe) to
provide automatic compression against damper gaskets for tight shut-off. When
power is applied to the AF series, the manual mechanism is released. The
actuators will now try to close against the 0° position during its normal control
operations. The manual override can also be released physically by the use of a
crank supplied with the actuator.
The AF uses a brushless DC motor which is controlled by an Application Specific
Integrated Circuit (ASIC). The ASIC monitors and controls the actuator’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 AF24-S US version is 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 +5°, the other
switch function is adjustable between +25° to +85°.
Dimensions (Inches [mm])
K4-2 US (supplied)
1/2" Centered
(Default)
3/4" Centered
(Field Selectable)
1.05" Centered
(Field Selectable)
K4-1 US (optional)
3/4" to 1.05"
Adjustable
K4 US (optional)
3/8" to 3/4"
Adjustable
0.65" [16.5]
3.25" [82.7]
0.19" [5]
0.39" [10]
0.35" [9]
3.86" [98]
[57]
2.24"
3.15" [80]
1.97"
[50]
2.64"
[67]
10.47" [266]
5.85" [148.5]
0.26" [6.5]
1.93"
[49]
D001
800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA
AV 10-18Shaft extension
IND-AF2Damper position indicator
K4 USUniversal clamp for 3/8” to 3/4” shafts
K4-1 USUniversal clamp for up to 1.05” dia jackshafts
K4-HUniversal clamp for hexshafts 3/8” to 5/8”
KH-AFCrankarm for up to 3/4” round shaft (Series 2)
KH-AF-1Crankarm for up to 1.05” jackshaft (Series 2)
KH-AFVV-bolt kit for KH-AF and KH-AF-1
Tool-068mm and 10 mm wrench
ZG-HTRThermostat/Heater Kit
ZDB-AF2 USAngle of rotation limiter
ZG-100Universal mounting bracket
ZG-101Universal mounting bracket
ZG-102Multiple actuator mounting bracket
ZG-106Mounting bracket for Honeywell
ZG-107Mounting bracket for Honeywell
NOTE: When using AF24 US and AF24-S US actuators,
only use accessories listed on this page.
For Actuator Wiring Information and Diagrams, Please See Belimo Wiring Guide (pg 349).
Series 100 replacement or new crankarm type installations
Honeywell
replacement or new crankarm type installations
®
Mod III or IV or Johnson® Series 100
®
Mod IV
®
Mod III or Johnson®
®
MA 3../4..,
Wiring Diagrams
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., AF24-S
US incorporates two built-in auxiliary switches: 2 x SPDT, 7A (2.5A)
4
@250 VAC, UL Approved, one switch is fixed at +5°, one is adjustable
25° to 85°.
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 maybe
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.
W002_08
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 have a
manual positioning mechanism accessible on its cover. Actuators shall use a
brushless DC motor and be protected from overload at all angles of rotation. Run
time shall be constant and independent of torque. If required, 2 SPDT auxiliary
switches shall be provided with one switch having the capability of being
adjustable. Actuators with switches must be constructed to meet the requirement
for Double Insulation so an electrical ground connection is not required to meet
agency listings. Actuators shall be UL Approved and CSA certified, have a 5 year
warranty, and be manufactured under ISO 9001 International Quality Control
Standards. Actuators shall be as manufactured by Belimo.
Electrical protectionactuators are double insulated
Overload protectionelectronic throughout 0° to 95° rotation
Angle of rotation95°, adjustable 35 to 95° w/ZDB-AF2 US
Torque133 in-lb [15 Nm] constant
Direction of rotationreversible with CW/CCW mounting
Position indicationvisual indicator, 0° to 95°
Manual override3mm hex crank (shipped w/actuator)
Auxiliary switches
(AF120/230-S)
Running time150 sec. constant, independent of load,
Humidity5 to 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 type 2 / IP54
Housing materialzinc coated steel
Agency listingscULus acc. to UL 873 and
Noise level max. 45 dB (A)
Servicingmaintenance free
Quality standardISO 9001
Weight6.9 lbs (3.1 kg)
1/2” conduit connector
(0° is spring return position)
2 x SPDT 7A (2.5A) @ 250 VAC, UL Approved
one set at +5°, one adjustable 25° to 85°
spring return < 20 sec
CAN/CSA C22.2 No. 24-93
Torque min. 133 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 crankarm and several mounting brackets are
available for applications where the actuator cannot be direct coupled to the
damper shaft.
Operation
The AF 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 consistent torque to the damper with, and without, power applied to the
actuator.
The AF series provide 95° of rotation and are provided with a graduated position
indicator showing 0° to 95°. The AF has a unique manual positioning mechanism
which allows the setting of any damper position within its 95° of rotation. The AF
series actuators are shipped at +5° (5° from full fail-safe) to provide automatic
compression against damper gaskets for tight shut-off. When power is applied to
the AF series, the manual mechanism is released. The actuators will now try to
close against the 0° position during its normal control operations. The manual
override can also be released physically by the use of a crank supplied with the
actuator.
The AF uses a brushless DC motor which is controlled by an Application Specific
Integrated Circuit (ASIC). The ASIC monitors and controls the actuator’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 actuators are Double
Insulated so a ground connection is not required.
The AF120/230-S US version is 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 +5°, the
other switch function is adjustable between +25° to +85°.
800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA
20
Page 6
AF120(-S) US, AF230(-S) US
On/Off, Spring Return Fail-Safe, 120 or 230 VAC
Accessories
AV 10-18Shaft extension
IND-AF2Damper position indicator
K4 USUniversal clamp for 3/8” to 3/4” shafts
K4-1 USUniversal clamp for up to 1.05” dia jackshafts
KH-AFCrankarm for up to 3/4” round shaft (Series 2)
KH-AF-1Crankarm for up to 1.05” jackshaft (Series 2)
KH-AFVV-bolt kit for KH-AF and KH-AF-1
Tool-068mm and 10 mm wrench
ZG-HTRThermostat/Heater Kit
ZDB-AF2 USAngle of rotation limiter
ZG-100Universal mounting bracket
ZG-101Universal mounting bracket
ZG-102Multiple actuator mounting bracket
ZG-106Mounting bracket for Honeywell
NOTE: When using AF120/230 US and AF120/230-S US actuators,
only use accessories listed on this page.
For Actuator Wiring Information and Diagrams, Please See Belimo Wiring Guide (pg 349).
new crankarm type installations
Series 100 replacement or new crankarm type installations
Honeywell® Mod III or IV or Johnson® Series 100
replacement or new crankarm type installations
®
Mod IV replacement or
®
Mod III or Johnson®
®
MA 3../4..,
Wiring Diagrams
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.,
AF120/240-S US incorporates two built-in auxiliary switches: 2 x
4
SPDT, 7A (2.5A) @250 VAC, UL Approved, one switch is fixed at +5°,
one is adjustable 25° to 85°.
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 maybe
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.
W004_08
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 have a manual
positioning mechanism accessible on its cover. Actuators shall use a
brushless DC motor and be protected from overload at all angles of
rotation. Run time shall be constant and independent of torque. If
required, 2 SPDT auxiliary switches shall be provided with one switch
having the capability of being adjustable. Actuators must be constructed
to meet the requirement for Double Insulation so an electrical ground
connection is not required to meet agency listings. Actuators shall be
UL Approved and CSA certified, have a 5 year warranty, and be
manufactured under ISO 9001 International Quality Control Standards.
Actuators shall be as manufactured by Belimo.
800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA
On/Off wiring for AF120 US and AF230 US
21
Page 7
AF24-SR US
Proportional Damper Actuator, Spring Return Fail-Safe,
24 V for 2 to 10 VDC and 4 to 20 mA Control Signal.Output Signal of 2 to 10 VDC for Position Indication.
Torque min. 133 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 crankarm 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, with the addition of a 500
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 or master-slave
applications.
Operation
The AF 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 AF series provides 95° of rotation and is provided with a graduated position
Technical DataAF24... US
Power supply24 VAC ± 20% 50/60 Hz
24 VDC ± 10%
Power consumption
running 6 W
holding 2 W
Transformer sizing10 VA (class 2 power source)
Electrical connection3 ft, 18 GA appliance cable
1/2” conduit connector
Overload protectionelectronic throughout 0 to 95° rotation
Operating range Y2 to 10 VDC, 4 to 20 mA
Input impedance100 k7 (0.1 mA), 500 7
Feedback output U2 to 10 VDC (max. 0.5 mA) for 95°
Angle of rotationmechanically limited to 95°
Torque133 in-lb [15 Nm] constant
Direction of rotation
spring reversible with cw/ccw mounting
motor reversible with built-in switch
Position indicationvisual indicator, 0° to 95°
(0° is spring return position)
Manual override3mm hex crank (shipped w/actuator)
Running time150 sec. constant, independent of load,
spring return < 20 sec
Humidity5 to 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 type 2 / IP54
Housing materialzinc coated metal
Agency listingscULus acc. to UL 873 and
CAN/CSA C22.2 No. 24-93
Noise level max. 45 dB (A)
Servicingmaintenance free
Quality standardISO 9001
Weight6.0 lbs (2.7 kg)
indicator showing 0 to 95°. The AF has a unique manual positioning mechanism
which allows the setting of any damper position within its 95° of rotation. The
actuator is shipped at +5° position (5° from full fail-safe) to provide automatic
compression against damper gaskets for tight shut-off. When power is applied,
the manual mechanism is released and the actuator drives toward the full failsafe position. The actuator will memorize the angle where it stops rotating and
use this point for its zero position for its normal control operations. The manual
override can also be released physically by the use of a crank supplied with the
actuator.
The AF 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 zero 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.
800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA
22
Page 8
24 V for 2 to 10 VDC and 4 to 20 mA Control Signal.Output Signal of 2 to 10 VDC for Position Indication.
Proportional Damper Actuator, Spring Return Fail-Safe,
AF24-SR US
Accessories
AV 10-18Shaft extension
IND-AF2Damper position indicator
K4 USUniversal clamp for 3/8” to 3/4” shafts
K4-1 USUniversal clamp for up to 1.05” dia jackshafts
K4-HUniversal clamp for hexshafts 3/8” to 5/8”
KH-AFCrankarm for up to 3/4” round shaft (Series 2)
KH-AF-1Crankarm for up to 1.05” jackshaft (Series 2)
KH-AFVV-bolt kit for KH-AF and KH-AF-1
Tool-068mm and 10 mm wrench
SGA24Min. and/or man. positioner in NEMA 4 housing
SGF24Min. and/or man. positioner for flush panel mounting
ZG-R01500 7 resistor for 4 to 20 mA control signal
ZG-HTRThermostat/Heater Kit
ZDB-AF2 USAngle of rotation limiter
ZG-100Universal mounting bracket
ZG-101Universal mounting bracket
ZG-102Multiple actuator mounting bracket
ZG-103 Universal mounting bracket
ZG-104Universal mounting bracket
ZG-106Mounting bracket for Honeywell
NOTE: When using AF24-SR US actuators, only use accessories listed on this page.
For Actuator Wiring Information and Diagrams, Please See Belimo Wiring Guide (pg 349).
new crankarm type installations
Series 100 replacement or new crankarm type installations
Honeywell
replacement or new crankarm type installations
®
Mod III or IV or Johnson® Series 100
®
Mod IV replacement or
®
Mod III or Johnson®
®
MA 3../4..,
Wiring Diagrams
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
Only connect common to neg. (–) leg of control circuits.
5
The ZG-R01 500 7 resistor converts the 4 to 20 mA control signal to
2 to 10 VDC, up to 2 actuators may be connected in parallel.
WARNING Live Electrical Components!
During installation, testing, servicing and troubleshooting of this product, it maybe
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.
24 VAC Transformer
1
Line
Volts
Control Signal
2 to 10 VDC
(–)
(+)
1 Common
2 + Hot
3 Y Input,
5 U Output 2 to 10V
AF24-SR US
3
2 to 10V
2
W011
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 500 7 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 have control direction of rotation switch
accessible on its cover. 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 or master-slave applications. Actuators
shall be UL Approved and CSA certified, have a 5 year warranty, and be
manufactured under ISO 9001 International Quality Control Standards. Actuators
shall be as manufactured by Belimo.
800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA
23
Page 9
AFA24-SR US
Proportional Damper Actuator, Spring Return Fail-Safe 24V for 2 to 10 VDC and 4 to 20 mA Control Signal.
Torque min. 133 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 crankarm 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, with the addition of a 5007
resistor, a 4 to 20 mA control input from an electronic controller or positioner.
Operation
The AFA 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 AFA series provides 95° of rotation and is provided with a graduated position
indicator showing 0 to 95°. The AFA has a unique manual positioning mechanism
which allows the setting of any damper position within its 95° of rotation. The
Technical DataAFA24... US
Power supply24 VAC ± 20% 50/60 Hz
24 VDC ± 10%
Power consumption
running 6 W
holding 2 W
Transformer sizing10 VA (class 2 power source)
Electrical connection3 ft, 18 GA appliance cable
1/2” conduit connector
Overload protectionelectronic throughout 0 to 95° rotation
Operating range Y2 to 10 VDC, 4 to 20 mA
Input impedance100 k7 (0.1 mA), 500 7
Angle of rotationmechanically limited to 95°
Torque133 in-lb [15 Nm] constant
Direction of rotation
spring reversible with cw/ccw mounting
motor reversible with built-in switch
Position indicationvisual indicator, 0° to 95°
(0° is spring return position)
Manual override3mm hex crank (shipped w/actuator)
Running time150 sec. constant, independent of load,
spring return < 20 sec
Humidity5 to 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 type 2 / IP54
Housing materialzinc coated metal
Agency listingscULus acc. to UL 873 and
actuator is shipped at +5° position (5° from full fail-safe) to provide automatic
compression against damper gaskets for tight shut-off. When power is applied,
the manual mechanism is released and the actuator drives toward the full failsafe position. The actuator will memorize the angle where it stops rotating and
use this point for its zero position for its normal control operations. The manual
override can also be released physically by the use of a crank supplied with the
actuator.
The AFA 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 zero 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.
800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA
24
Page 10
AFA24-SR US
Proportional damper actuator, Spring Return Fail-Safe 24V for 2 to 10 VDC and 4 to 20 mA control signal.
Accessories
AV 10-18Shaft extension
IND-AF2Damper position indicator
K4 USUniversal clamp for 3/8” to 3/4” shafts
K4-1 USUniversal clamp for up to 1.05” dia jackshafts
K4-HUniversal clamp for hexshafts 3/8” to 5/8”
KH-AFCrankarm for up to 3/4” round shaft (Series 2)
KH-AF-1Crankarm for up to 1.05” jackshaft (Series 2)
KH-AFVV-bolt kit for KH-AF and KH-AF-1
Tool-068mm and 10 mm wrench
SGA24Min. and/or man. positioner in NEMA 4 housing
SGF24Min. and/or man. positioner for flush panel mounting
ZG-R01500 7 resistor for 4 to 20 mA control signal
ZG-HTRThermostat/Heater Kit
ZDB-AF2 USAngle of rotation limiter
ZG-100Universal mounting bracket
ZG-101Universal mounting bracket
ZG-102Multiple actuator mounting bracket
ZG-106Mounting bracket for Honeywell
new crankarm type installations
ZG-107Mounting bracket for Honeywell
Series 100 replacement or new crankarm type installations
ZG-108Mounting bracket for Barber Colman
Honeywell® Mod III or IV or Johnson® Series 100
replacement or new crankarm type installations
ZG-AF USCrankarm adaptor kit for AF/NF
ZG-AF108Crankarm adaptor kit for AF/NF
ZS-100 Weather shield (metal)
ZS-150Weather shield (polycarbonate)
ZS-260Explosion-proof housing
ZS-300NEMA 4X housing
NOTE: When using AFA24-SR US actuators, only use accessories listed on this page.
Actuator may not be tandem mounted on same shaft or otherwise mechanically linked.
®
Mod IV replacement or
®
Mod III or Johnson
®
MA 3../4..,
®
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 500
7 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 fail-safe operation.
Actuators shall have control direction of rotation switch accessible on its
cover. 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. Actuators shall be UL
Approved and CSA certified, have a 5 year warranty, and be manufactured under ISO 9001 International Quality Control Standards. Actuators
shall be as manufactured by Belimo.
Wiring Diagrams
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
The ZG-R01 500 7 resistor converts the 4 to 20 mA control signal to
2 to 10 VDC, up to 2 actuators may be connected in parallel.
WARNING Live Electrical Components!
During installation, testing, servicing and troubleshooting of this product, it maybe
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 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA
25
Page 11
AF24-ECON-R03 US
Proportional Damper Actuator, Spring Return Safety, 24V for Stand-alone Economizer Damper Control using 3 k7
Mixed Air Sensor, Built-in Minimum Position Adjustment. Output Signal of 2 to 10VDC for Position Indication.
For proportional control of mixed air setpoint on economizer 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 3 k7 thermistor.
Operation
The AF 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 consistent torque to the damper with, and without, power applied to the
actuator.
The AF24-ECON-R03 US provide 95° of rotation and are provided with a
Technical DataAF24... US
Power supply24 VAC ± 20% 50/60 Hz,
Power consumption
Transformer sizing10 VA (class 2 power source)
Electrical connection3 ft, plenum rated cable
Overload protectionElectronic throughout 0 to 95° rotation
Control SignalY1 3 k7 NTC Type 10 thermistor,
Input impedanceY1 100 k7
Feedback output, U2 to 10 VDC (max. 0.7 mA) for 95°
Angle of rotationMax. 95°, adjust. with mechanical stop
Torque133 in-lb [15 Nm]
Override functionSee override control table on opposite page
Direction of rotation
Position indicationVisual indicator, 0° to 95° scaled as
Running timemotor 95 sec constant, independent of load
Humidity5 to 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 type 2 / IP54
Housing materialzinc coated steel
Agency listingscULus acc. to UL 873 and
graduated position indicator showing 0° to 95°. The actuators are shipped at
+5° (5° from full fail-safe) to provide automatic compression against damper
gaskets for tight shut-off. When power is first applied, the AF24-ECON-R03 US
will move to 0° (full fail-safe). The actuator will now try to close against the 0°
position during its normal control operations.
The AF24-ECON-R03 US 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
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. Power consumption is reduced in holding mode.
Installation
Refer to AF Section of the Standard Actuation and Accessories, Technical
Documentation.
800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA
26
Page 12
Proportional Damper Actuator, Spring Return Safety, 24V for Stand-alone Economizer Damper Control using 3 k7
Mixed Air Sensor, Built-in Minimum Position Adjustment. Output Signal of 2 to 10VDC for Position Indication.
Occupied - Economizer Mode
The AF24-ECON-R03 US enters Economizer Mode when either an external relay
or controller completes the circuit between the actuator wire 3(Y1) and MA
sensor. In this mode, the actuator moves proportionally to maintain a MA setpoint of 55°F (fixed). A proportional band of 6°F modulates the actuator between
53 and 58°F. Also, a +/-1°F dead band eliminates hunting of the actuator, while
maintaining suitable temperatures in the RTU mixed air chamber.
MA Dry Bulb TemperatureAF24-ECON... Position
< 53°FMin. position
53°F < MAT < 58°F
> 58°F100% open
Modulates between
Min. Position and 100% open
Accessories, see page 308.
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 shaft up
to a 1.05” diameter. Actuator shall deliver a minimum output torque of 133
in-lbs. The actuator must provide proportional damper control in response to a
3 k7 NTC thermistor, 55°F setpoint. Actuator must have a built-in minimum
position potentiometer. Actuator must have minimum position override via 0 to
10 VDC on wire 4. 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 independent of torque load. A 2 to 10 VDC feedback signal shall be
provided for position feedback or master-slave applications. The actuator must
be designed so that they may be used for either clock-wise or counterclockwise
fail safe operation. Actuators shall be cUL Approved, have a 5 year warranty, and
be manufactured under ISO 9001 International Quality Control Standards.
Actuators shall be as manufactured by Belimo.
Wiring Diagrams
Provide overload protection and disconnect as required.
1
Min-position is adjustable from 0 to 100% with a
2
potentiometer on the actuator cover.
Actuators with plenum rated cable do not have numbers on wires; use
3
color codes instead.
CW (default) indicates that motor drive starts at zero position.
4
A relay or switch can spring return the actuator when the RTU fan de-
5
energizes, or if low ambient temperature is sensed.
A standard relay can be used to close the sensor circuit to engage
economizer mode, e.g. outside air changeover device like a dry bulb or
6
enthalpy limit switch.
A remote CO2 sensor or DDC controller with a 0 to 10 VDC output can
change the standard relay can be used to open and close the sensor
7
circuit. This device can be a relay or a dry bulb/enthalpy limit switch.
Override control for Y2 only accepts 0 to 10 VDC override control.
8
AF24-ECON-R03 US
Standard Economizer Mode Wiring AF24-ECON-R03 US
Override for AF24-ECON-R03 US
Override control
Wire Input SignalPositionApplication
Y124 VACDrive closed (0%)Morning warm-up cycle
Y1CommonDrive open (100%)Smoke Purge
Y1Open wireDrive to min position
Y2
0 VDC to
10 VDC
Min position of
0% to 100%
Mechanical cooling in use,
RTU thermostat
calls for heat
Override potentiometer via a
remote CO2 sensor/controller or DDC controller
During installation, testing, servicing and troubleshooting of this product, it maybe
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 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA
27
Page 13
AF24-PC US
Proportional Damper Actuator, Spring Return Fail-Safe, 24 V for 0 to 20 V Phasecut Control Signal
Output Signal of 2 to 10 VDC for Position Indication
Torque min. 133 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 crankarm 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 0-10 V phasecut control input from an
electronic controller or positioner. A 2 to 10 VDC feedback signal is provided for
position indication or master-slave applications.
Operation
The AF 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 AF series provides 95° of rotation and is provided with a graduated position
Technical DataAF24... US
Power supply24 VAC ± 20% 50/60 Hz
24 VDC ± 10%
Power consumption
running 6 W
holding 2.5 W
Transformer sizing10 VA (class 2 power source)
Electrical connection3 ft, 18 GA appliance cable
1/2” conduit connector
Overload protectionelectronic throughout 0 to 95° rotation
Operating range Y0 to 10 V phasecut
Input impedance8 k7 (0.1 mA), 50 m7
Feedback output U2 to 10 VDC (max. 0.5 mA) for 95°
Angle of rotationmechanically limited to 95°
Torque133 in-lb [15 Nm] constant
Direction of rotation
spring reversible with cw/ccw mounting
motor reversible with built-in switch
Position indicationvisual indicator, 0° to 95°
(0° is spring return position)
Manual override3mm hex crank (shipped w/actuator)
Running time150 sec. constant, independent of load,
spring return < 20 sec
Humidity5 to 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 type 2 / IP54
Housing materialzinc coated metal
Agency listingscULus acc. to UL 873 and
CAN/CSA C22.2 No. 24-93
Noise levelmax. 45 dB (A)
Servicingmaintenance free
Quality standardISO 9001
Weight6.0 lbs (2.7 kg)
indicator showing 0° to 95°. The AF has a unique manual positioning mechanism
which allows the setting of any damper position within its 95° of rotation. When
power is applied to the AFR series its “one time use” mechanism is released. The
actuator is shipped at +5° (5° from full fail-safe) to provide automatic
compression against damper gaskets for tight shut-off. When power is applied,
the manual mechanism is released and the actuator drives toward the full failsafe position. The actuator will memorize the angle where it stops rotating and
use this point for its zero position for its normal control operations. The manual
override can also be released physically by the use of a crank supplied with the
actuator.
The AF 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 zero 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.
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28
Page 14
Proportional Damper Actuator, Spring Return Fail-Safe, 24 V for 0 to 20 V Phasecut Control Signal
Output Signal of 2 to 10 VDC for Position Indication
AF24-PC US
Accessories
AV 10-18Shaft extension
IND-AF2Damper position indicator
K4 USUniversal clamp for 3/8” to 3/4” shafts
K4-1 USUniversal clamp for up to 1.05” dia jackshafts
K4-HUniversal clamp for hexshafts 3/8” to 5/8”
KH-AFCrankarm for up to 3/4” round shaft (Series 2)
KH-AF-1Crankarm for up to 1.05” jackshaft (Series 2)
KH-AFVV-bolt kit for KH-AF and KH-AF-1
Tool-068mm and 10 mm wrench
SGA24Min. and/or man. positioner in NEMA 4 housing
SGF24Min. and/or man. positioner for flush panel mounting
ZG-R01500 7 resistor for 4 to 20 mA control signal
ZG-HTRThermostat/Heater Kit
ZDB-AF2 USAngle of rotation limiter
ZG-100Universal mounting bracket
ZG-101Universal mounting bracket
ZG-102Multiple actuator mounting bracket
ZG-106Mounting bracket for Honeywell
ment or new crankarm type installations
ZG-107Mounting bracket for Honeywell
Series 100 replacement or new crankarm type installations
ZG-108Mounting bracket for Barber Colman
Honeywell® Mod III or IV or Johnson® Series 100
replacement or new crankarm type installations
ZG-AF USCrankarm adaptor kit for AF/NF
ZG-AF108Crankarm adaptor kit for AF/NF
ZS-100 Weather shield (metal)
ZS-150Weather shield (polycarbonate)
ZS-260Explosion-proof housing
ZS-300NEMA 4X housing
NOTE: When using AF24-PC US actuators, only use accessories listed on this page.
For Actuator Wiring Information and Diagrams, Please See Belimo Wiring Guide (pg 349).
®
Mod IV replace-
®
Mod III or Johnson®
®
MA 3../4..,
Wiring Diagrams
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
WARNING Live Electrical Components!
During installation, testing, servicing and troubleshooting of this product, it maybe
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.
24 VAC Transformer
1
Line
Volts
Control Signal
0 to 20V Phasecut
(–)
(+)
1 Common
2 + Hot
3 Y Input,
5 U Output 2 to 10V
AF24-PC US
3
0 to 10V Phasecut
2
0 to 20 V phasecut control of AF24-PC US
W184
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 0 to 20 V phasecut control output from an electronic controller or
positioner. The actuators must be designed so that they may be used for either
clockwise or counterclockwise fail-safe operation. Actuators shall have control
direction of rotation switch accessible on its cover. 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 or
master-slave applications. Actuators shall be UL Approved and CSA certified,
have a 5 year warranty, and be manufactured under ISO 9001 International
Quality Control Standards. Actuators shall be as manufactured by Belimo.
For proportional modulation of dampers and control valves in HVAC systems.
The AF24-MFT US provides mechanical spring return operation for reliable failsafe application.
Default/Configuration
Default parameters for 2 to 10 VDC applications of the AF24-MFT US 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.
Transformer sizing10 VA (Class 2 power source)
Electrical connection3 ft, 18 GA appliance cable
Overload protectionelectronic throughout 0 to 95° rotation
Operating range Y*2 to 10 VDC
Input impedance100 k7 for 2 to 10 VDC (0.1 mA)
Feedback output U*2 to 10 VDC, 0.5 mA max
Torquemin 133 in-lb (15 Nm)
Direction of rotation*
Mechanical
angle of rotation*
Running time motor*
Angle of Rotation
adaptation
Override control*Min. (Min Position) = 0%
Position indicationvisual indicator, 0° to 95°
Auxiliary switches
(AF24-MFT-S US)
Manual override3 mm hex crank (supplied)
Humidity 5 to 95% RH, non-condensing
Ambient temperature-22 to 122° F (-30 to 50° C)
Storage temperature-40 to 176° F (-40 to 80° C)
Housing NEMA 2, IP54
Housing material zinc coated metal
Noise levelless than 45 dB (A)
Agency listingscULus acc. to UL 873 and
Quality standard ISO 9001
Servicingmaintenance free
Weight6.0 lbs. (2.7 kg)
* Variable when configured with MFT options
24 VDC, ±10%
running 6 W
holding 2.5 W
1/2” conduit connector
4 to 20 mA (w/500 7, 1/4 7 resistor) ZG-R01
500 7 for 4 to 20 mA
1500 7 for PWM, Floating point and On/Off control
spring reversible with cw/ccw mounting
motor reversible with built-in switch
95°, adjustable 35° to 95° w/ZDB-AF2 US
150 seconds constant
spring
<20 sec spring return fail safe position
Off (Default)
- ZS (Mid. Position) = 50%
- Max. (Max. Position) = 100%
(0° is spring return position)
2 x SPDT 7A (2.5A) @ 250 VAC, UL Approved one
set at +5°, one adjustable 25° to 85°
CAN/CSA C22.2 No. 24-93
The AF24-MFT US 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 physical damper or valve mechanical stop and use
this point for its zero position during normal control operations. A unique
manual override allows the setting of any actuator position within its 95° of
rotation with no power applied. This mechanism can be released physically by
the use of a crank supplied with the actuator. When power is applied the manual
override is released and the actuator drives toward the fail-safe position.
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 without 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 AF24-MFT US 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
AF24-MFT US actuator is shipped at +5° (5° from full fail-safe) to provide
automatic compression against damper gaskets for tight shut-off.
NOTE: Please See Documentation on Multi-Function Technology, page 287.
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30
Page 16
Proportional Damper Actuator, Spring Return Fail-Safe, Multi-Function Technology
Wiring Diagrams
Provide overload protection and disconnect as required.
1
CAUTION Equipment damage!
2
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.
3
For end position indication, interlock control, fan startup, etc., AF24-MFT-
5
S US incorporates two built-in auxiliary switches: 2 x SPDT, 7A (2.5A)
@250 VAC, UL Approved, one switch is fixed at +5, one is adjustable 25
to 85.
Meets cULus requirements without the need of an electrical ground
connection.
The ZG-R01 500 7 resistor may be used.
AF24-MFT (-S) US
®
Auxiliary Switch AF24-MFT-S US
W012_08
WARNING Live Electrical Components!
During installation, testing, servicing and troubleshooting of this product, it maybe
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.
Standard Wiring
Standard Wiring
W013_08
Override to Zero PositionOverride to 10V PositionOverride control to min, mid, max, positions
Override to Zero PositionOverride to 20 mA Position
800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA
2 to 10 VDC control signal
31
Page 17
AF24-MFT95 US
Proportional Damper Actuator, Spring Return Fail-Safe, 24 V for Use with
Honeywell® Electronic Series 90, or a 0 to 135 7 input
Technical DataAF24-MFT95 US
Power supply24 VAC ± 20% 50/60 Hz
Power consumption
running 6 W
holding 2 W
Transformer sizing10 VA (class 2 power source)
Electrical connection3 ft, 18 GA appliance cable
Overload protectionelectronic throughout 0 to 95° rotation
Operating range WRB0 to 135 7 Honeywell electronic series 90,
(Not selectable via MFT)
Feedback output U*2 to 10 VDC, 0.5 mA max
Mechanical
angle of rotation*
Torque133 in-lb [15 Nm] constant
Direction of rotation*spring: reversible with cw/ccw mounting
Direction of rotation*
Angle of Rotation
Adaptation*
Override control*Min. (Min Position) = 0%
Humidity5 to 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 type 2 / IP54
Housing materialzinc coated metal
Agency listingscULus acc. to UL 873 and
Noise level max. 45 dB (A)
Servicingmaintenance free
Quality standardISO 9001
Weight6.0 lbs (2.7 kg)
* Variable when configured with MFT options
or a 0 to 135 7 input
95°, adjustable 35° to 95° w/ZDB-AF2 US
spring reversible with cw/ccw mounting
(0° is spring return position)
spring <20 sec spring return fail safe position
Off (Default)
CAN/CSA C22.2 No. 24-93
s4ORQUEMININLB
s#ONTROLFIXEDTO7 input, or Honeywell series 90 (fixed)
s&EEDBACKTO6$#$%&!5,4
Application
For proportional modulation of dampers and control valves in HVAC systems.
The AF24-MFT95 US provides mechanical spring return operation for reliable failsafe application.
Default/Configuration
Default parameters for 0 to 135 7 Input applications of the AF24-MFT95 US
actuator are assigned during manufacturing. If required, custom versions of the
actuator can be ordered. However the control input cannot be modified via MFT
PC tool software. The parameters noted in the Technical Data table are variable.
The AF24-MFT95 US 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 physical damper or valve mechanical stop and use this
point for its zero position during normal control operations. A unique manual
override allows the setting of any actuator position within its 95° of rotation with
no power applied.This mechanism can be released physically by the use of a
crank supplied with the actuator. When power is applied the manual override is
released and the actuator drives toward the fail-safe position.
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 without 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 AF24-MFT95 US 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
AF24-MFT95 US actuator is shipped at +5° (5° from full fail-safe) to provide
automatic compression against damper gaskets for tight shut-off.
During installation, testing, servicing and troubleshooting of this product, it maybe
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.
Q209A
Minimum Position
Potentiometer
W
B
W
To other
actuators
1 Common, Blk
2 + Hot, Red
3 W, Wht
4 R, Wht
5 B, Wht
Output 2-10 VDC
6 ‘U5’
AF24-MFT95 US
Occupied
Contact
Honeywell T675A
Morning Warmup
1 Common, Blk
2 + Hot, Red
3 W, Wht
4 R, Wht
5 B, Wht
Output 2-10 VDC
6 ‘U5’
AF24-MFT95 US
3
5
3
5
1 Common, Blk
2 + Hot, Red
3 W, Wht
4 R, Wht
5 B, Wht
6 ‘U5’
Output 2-10 VDC
AF24-MFT95 US
1 Common, Blk
2 + Hot, Red
3 W, Wht
4 R, Wht
5 B, Wht
Output 2-10 VDC
6 ‘U5’
AF24-MFT95 US
24 VAC
Transformer
1
Line
Volts
2
BR
H205
Changeover
Controller
W018
3
5
3
5
2
Shunting
Resistor
4
W973, W7100
Controller
1
Line
Volts
No. of
actuators Resistance
2 13007
3 9107
4 7687
Resistor Kit No. ZG-R06
R
W
W
B
Y
RR
W020
Override of AF24-MFT95 US
AF24-MFT95 USused with a Series 90
controller and a Series 90 low limit control
AF24-MFT95 USused with a Series 90
controller and a Series 90 high limit control
Wiring multiple actuators to a Series 90
controller.
S963A
RB
2
Occupied
Contact
Minimum Position
Potentiometer
W
3
To other
actuators
1 Common, Blk
2 + Hot, Red
3 W, Wht
4 R, Wht
5 B, Wht
6 ‘U5’
Output 2-10 VDC
AF24-MFT95 US
1 Common, Blk
2 + Hot, Red
3 W, Wht
4 R, Wht
5 B, Wht
6 ‘U5’
Output 2-10 VDC
AF24-MFT95 US
Line
Volts
W016_08
Shunting
Resistor
4
Line
Volts
W017_08
24 VAC
Transformer
1
Series 90
Controller
B
R
W
R
B
H205 Changeover Controller
1
2
W
Wiring multiple actuators to a Series 90
controller using a minimum position
potentiometer.
Used with the W973 and W7100 controllers.
Honeywell Q209A
24 VAC
Transformer
W019
1
Line
Volts
2
5
3
5
3
W
4
R
B
Shunting
Resistor
W973, W7100
T775
1
Line
Volts
2
Minimum Position
RRB
W
W
Honeywell
T675A Morning
Warmup
Potentiometer
To other
actuators
Typical wiring diagrams for multiple
actuators used with the W973, W7100 and
T775 controllers.
1 Common, Blk
2 + Hot, Red
3 W, Wht
4 R, Wht
5 B, Wht
Output 2-10 VDC
6 ‘U5’
AF24-MFT95 US
1 Common, Blk
2 + Hot, Red
3 W, Wht
4 R, Wht
5 B, Wht
Output 2-10 VDC
6 ‘U5’
AF24-MFT95 US
3
5
3
5
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Installation Instructions
Quick-Mount Visual Instructions for Mechanical Installation
Quick-Mount Visual Instructions
1. Rotate the damper to its fail-safe position.
If the shaft rotates counterclockwise, mount the “CCW” side of the actuator out.
If it rotates clockwise, mount the actuator with the “CW” side out.
2. If the universal clamp is not on the correct side of the actuator, move it to the correct side.
3. Slide the actuator onto the shaft and tighten the nuts on the V-bolt with a 10mm wrench to 6-8 ft-lb of torque.
4. Slide the anti-rotation strap under the actuator so that it engages the slot at the base of the actuator. Secure the strap to the duct work with #8 self-tapping screws.
NOTE: Read the “Standard Mounting” instructions, on the next page, for more detailed information.
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Installation Instructions
Mechanical Installation
Determining Torque Loading and Actuator Sizing
Damper torque loadings, used in selecting the correct size actuator, should be
provided by the damper manufacturer. If this information is not available, the
following general selection guidelines can be used.
Damper TypeTorque Loading
Opposed blade, without edge seals,
for non-tight close-off applications
Parallel blade, without edge seals,
for non-tight close-off applications
Opposed blade, with edge seals,
for tight close-off applications
Parallel blade, with edge seals,
for tight close-off applications
The above torque loadings will work for most applications under 2 in. w.g.
static pressure or 1000 FPM face velocity. For applications between this
criteria and 3 in. w.g. or 2500 FPM, the torque loading should be increased by
a multiplier of 1.5. If the application calls for higher criteria up to 4 in. w.g. or
3000 FPM, use a multiplier of 2.0.
3 in-lb/sq. ft.
4 in-lb/sq. ft.
5 in-lb/sq. ft.
7 in-lb/sq. ft.
Torque Loading Chart
70
60
50
40
30
Damper Area (sq. ft.)
20
10
0
2
46810
3
579
Torque Loading (in-lb/
sq. ft.)
General Information
Belimo actuators should be mounted indoors in a dry, relatively clean
environment free from corrosive fumes. If the actuator is to be mounted
outdoors, a protective enclosure must be used to shield the actuator.
For new construction work, order dampers with extended shafts. Instruct the
installing contractor to allow space for mounting and service of the Belimo actuator
on the shaft. The damper shaft must extend at least 3 1/2” from the duct. If the
shaft extends less than 3-1/2” or if an obstruction blocks access, the shaft can be
extended with the AV 10-18 shaft extension accessory or the actuator may be
mounted in its short shaft configuration.
Mechanical Operation
The actuator is mounted directly to a damper shaft up to 1.05” in diameter by
means of its universal clamp. A crankarm and several mounting brackets are
available for applications where the actuator cannot be direct coupled to the
damper shaft. The AF 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 AF…-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 +5°, the other switch function is adjustable
between +25 to +85°.
Automatic Airtight Dampers/Manual Override
The AF series provides 95° of rotation and is provided with a graduated
position indicator showing 0° to 95°.
The AF has a unique manual positioning mechanism which allows the setting
of any damper position within its 95° of rotation. A pre-tensioned spring
automatically tightens damper when power is applied to the actuator,
compensating for damper seal deterioration.
The actuator is shipped at +5° (5° from full fail-safe) to provide automatic
compression against damper gaskets for tight shut-off. When power is applied,
the manual mechanism is released and the actuator drives toward the full failsafe position.
Standard Mounting
NOTE: The AF…series actuator is shipped with the manual override
adjusted for a +5° position at the universal clamp (not at full fail-safe, 0°).
This allows for automatic compression of damper blade seals when the
actuator is in use, providing tight shut-off. This assumes that the damper is
to have tight shut-off at the fail-safe position. If tight close-off is desired at
the opposite direction from fail-safe, the manual override should be
released so the actuator can go to the full fail-safe position. See the manual
override instructions.
1. Manually move the damper to the fail-safe position (usually closed). If the
shaft rotated counterclockwise (
rotated clockwise (), this is a CW installation. In a CCW installation, the
actuator side marked “CCW” faces out, while in a CW installation, the side
marked “CW” faces out. All other steps are identical.
2. The actuator is usually shipped with the universal clamp mounted to the
“CCW” side of the actuator. To test for adequate shaft length, slide the
actuator over the shaft with the side marked “CCW” (or the “CW” side if this
is the side with the clamp). If the shaft extends at least 1/8” through the
clamp, mount the actuator as follows. If not, go to the Short Shaft Installation section.
3. If the clamp is not on the correct side as determined in step #1, re-mount the
clamp as follows. If it is on the correct side, proceed to step #5. Look at the
universal clamp. If you are mounting the actuator with the “CCW” side out,
position the clamp so that the pointer section of the tab is pointing to 0° (see
Figure C) and the spline pattern of the clamp mates with spline of the
actuator. Slip the clamp over the spline. (Use the same procedure if the “CW”
side is out.) If your application requires a mechanical minimum position, read
the Rotation Limiting, Mechanical Minimum Damper Position section.
4. Lock the clamp to the actuator using the retaining clip.
5. Verify that the damper is still in its full fail-safe position.
6. Slide the actuator over the shaft.
7. Position the actuator in the desired location.
8. Tighten the two nuts on the clamp using a 10mm wrench or socket using
6-8 ft-lb of torque.
9. Slip the stud of the anti rotation strap into the slot at the base of the
actuator. The stud should be positioned approximately 1/16 of an inch from
the closed end of the slot. Bend the strap as needed to reach the duct.
Attach the strap to the duct with #8 self tapping screws.
), this is a CCW installation. If the shaft
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30
20
10
0
CCW
30
20
10
0
-5
40
30
20
10
0
-5
40
30
20
10
0
-5
-5
-5
-
Installation Instructions
Mechanical Installation
Short Shaft Installation
If the shaft extends at least 3/4” from the duct, follow these steps:
1. Determine the best orientation for the universal clamp on the back of the
actuator. The best location would be where you have the easiest access to the
V bolt nuts on the clamp.
2. Engage the clamp to the actuator as close as possible to the determined
location.
3. Lock the clamp in place using the remaining retainer clip.
4. Verify that the damper is still in its full fail-safe position.
5. Slide the actuator over the shaft.
6. Position the actuator in the desired location.
7. Tighten the two nuts on the clamp using a 10mm wrench or socket using
6-8 ft-lb of torque.
8. Slip the stud of the anti-rotation strap into the slot at the base of the
actuator. The stud should be positioned approximately 1/16 of an inch from
the closed end of the slot. Bend the strap as needed to reach the duct.
Attach the strap to the duct with #8 self tapping screws.
9. If damper position indication is required, use the optional IND-AF2 pointer.
See Figure A.
Correct clamp mounting
position if actuator is at
full fail-safe.
Correct pointer mounting
position if actuator is at
full fail-safe.
CW
Jackshaft Installation
The AF… series actuator is designed for use with jackshafts up to 1.05” in
diameter. In most applications, the AF actuator may be mounted in the same
manner as a standard damper shaft application. If more torque is required
than one AF actuator can provide, a second AF actuator may be mounted to the
jackshaft using the ZG-102 multiple actuator mounting bracket. See wiring
guide for wiring details.
AF ACTUATORS WHICH MAY BE USED ON ONE SHAFT
ModelMaximum Quantity Per Shaft
AF24(-S) US
AF120(-S) US
4
AF230(-S) US
AF24-SR US4
AF24-MFT(-S) US4
MOUNTING: If the actuators are
mounted on the opposed ends of the
shaft, the actuator direction must be
selected carefully. Usually, the
direction of rotation is reversed.
Multiple Actuator Mounting
If more torque is required than one AF actuator can provide, a second AF
actuator may be mounted to the shaft using the ZG-102 multiple mounting
bracket.
NOTE: The manual positioning mechanism cannot be used in multiple actuator
applications.
Special Wiring and Additional Information: See wiring guide
CCW
40
30
20
10
0
Correct pointer mounting
position when actuator is
at 5d preload.
CW
CWCCW
40
30
20
10
0
Correct pointer mounting
position if actuator is at
full fail-safe.
CWCCW
FIGURE A – Universal Clamp and Ind-AF2 Pointer (optional)
positions indicating fail-safe and pre-load settings
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Rotation Limitation
The angle of rotation limiter, ZDB-AF2 US, is used in conjunction with the tab on
the universal clamp or IND-AF2 position indicator which comes with the ZDB-AF2
US. In order to function properly, the clamp or indicator must be mounted
correctly.
See Figure A.
The ZDB-AF2 US may not work in certain mounting orientations using the
ZG-106 or ZG-107 mounting brackets. It will not work with the ZG-108
mounting bracket. Limiting the damper rotation must be accomplished by
adjusting the crankarm linkage.
The ZDB-AF2 US may be used in 2 ways to control the rotational output of the
AF series actuator. One use is in the application where a damper has a
designed rotation less than 90°. An example would be a 45° or 60° rotating
damper. The other application would be to set a minimum damper position
which can be easily set or changed without having to remove the actuator from
the damper.
Damper Rotation Limiting
1. Determine the amount of damper rotation required.
2. Locate the Angle of Rotation Limiter (ZDB-AF2 US) on the actuator so that
its edge lines up with the degree graduation on the actuator face which
corresponds with the required rotation. See Figure C.
3. Find the appropriate cross-hair location through the slot of the limiter. This
is the screw mounting location.
4. Pierce through the label material to allow easy fastening of the retaining
screw.
5. Position the limiter back to the desired position, making sure the locating
“teeth” on the limiter are engaged into the locating holes on the actuator.
6. Fasten the limiter to the actuator using the self tapping screw provided.
7. Test the damper rotation either manually with the manual crank or apply
power and if required, a control signal. Re-adjust if necessary.
Installation Instructions
Mechanical Installation
Screw secured at
these cross hairs
40
30
20
Angle of rotation
is now set at 40o.
FIGURE C – ZDB-AF2 US, Securing the Angle of Rotation Limiter
1
00
90
80
70
60
50
40
30
20
10
0
Secure angle-ofrotation limiter
40
30
20
40
30
20
Philips screwdriver
100
CWCCW
Screw
90
80
70
0
6
0
5
40
3
20
10
0
0
Mechanical Minimum Damper Position
In order to use this procedure, the actuator must be mounted for short shaft
mounting. See pages 8 & 10.
1. Position the damper to its minimum position by using the manual crank or
by providing the appropriate control signal to the AF24… modulating type
actuator.
2. Place the indicator on to the actuator spline in the approximate position
shown in Figure D. Fasten it with the retaining clip. Note that the mounting
orientation is different than the mounting used for Damper Rotation Limiting.
3. Place the ZDB-AF2 US rotation limiter on the actuator so that it either makes
contact with, or is as close as possible to, the edge of the indicator. See
Figure E. Make sure that the locating teeth are engaged into the locating
holes on the actuator. If all of the mounting teeth do not align with the
holes, the mounting location of the indicator to the spline may have to be
moved. The limiter would then be remounted to get the best position match
of both parts.
4. Find the cross-hair location through the slot of the limiter. This is the screw
mounting location.
5. Pierce through the label material to allow easy fastening of the retaining
screw.
6. Fasten the limiter to the actuator using the self tapping screw provided.
7. Test the damper operation either manually with the manual crank or apply
power and if required, a control signal. Re-adjust if necessary.
This method should not be used for outside air damper applications. The
damper will never go to the full close-off position. This may cause coils to
freeze or other system problems. The AF24-SR (-S) US wired to either the
SGA24 or SGF24 can be used for minimum position setting and still provide full
close-off.
FIGURE D
60
5
0
40
30
0
2
10
0
FIGURE E
60
0
5
40
0
3
20
10
0
CWCCW
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Installation Instructions
Mechanical Installation
Manual Override
The AF series actuators can be manually positioned to ease installation or for
emergency positioning.
1. The manual override will only work if no power is available to the actuator.
2. Insert the manual crank (shipped with the actuator) into the hexagon hole
located on either side of the actuator. An illustration, located on the label,
shows the location.
3. Turn the crank in the direction shown on the label (clockwise on the “CW”
side, counterclockwise on the “CCW” side). It will take approximately 19
revolutions to rotate the full 95° of rotation.
4. To lock the actuator in the required position, rotate the crank quickly in the
opposite direction, 1/2 of a revolution. The “lock closed” icon on the label shows
the correct direction.
5. The manual override may be disengaged in 2 ways.
- Rotate the crank about a 1/4 revolution in the same direction as the initial
winding. The “lock open” icon shows the correct direction.
- Apply power to wire 1 and 2. The actuator will automatically disengage
the override function and will go to the “on” position in the case of the
On/Off versions. Or, in the case of the proportional versions, go to the 0
signal position and then go to the position corresponding to the control
signal. The actuator will now work normally.
Auxiliary Switches
The AF series actuators may be ordered with 2 built-in SPDT auxiliary switches
used for safety interfacing or signalling, for example, for fan start-up. The switch
position near the fail-safe position is fixed at 5°. The other is adjustable between
25 and 85° of rotation. The crank, supplied with the actuator, or a 3mm allen
wrench is used to adjust the switching position.
Two methods may be used to adjust the switching point of the adjustable switch.
Method 1 - See Figure F
1 The actuator must be in its fail-safe position.
2. Insert the crank into the hexagon shaped hole located in the center of the
adjustable switch pointer.
3. Rotate the crank until the switch pointer is at the desired switch point in
degrees as shown.
AF... Series
Factory setting 85°
40
30
50
60
70
80
25…85°
Rotate with
crank handle
40
30
50
Crank
80
25…85°
60
70
Handle
60° set
40
30
25…85°
50
60
70
80
Winding the
damper actuator
- insert crank handle
- turn handle in
direction of arrow
Locking the
damper actuator
- rotate crank handle
1/2 turn in the
direction shown by
the “locked” icon.
Unlocking the
damper actuator
(2 options)
- rotate crank handle
1/4 turn in the
direction shown by
the “unlocked” icon.
- remote control by
supplying power to
the unit for > than 3
sec.
Testing the installation Without Power
The actuator/damper installation may be tested without power at the actuator.
Refer to the manual positioning section of the instructions. Move the damper
to its full non-fail-safe position using the manual crank. Disengage the manual
position mechanism and have the damper go to full fail-safe position. Correct
any mechanical problems and retest.
FIGURE F
Method 2 - See Figure G
1. Position the damper to the point at which you want the switch to activate.
This may be done by using the manual override or by providing the
appropriate proportional signal to AF24… modulating type actuator. The
position of the switch pointer is not important during this step.
2. Insert the crank into the hexagon shaped hole located in the center of the
adjustable switch pointer.
3. Rotate the switch pointer to just past the switch point indicating arrow as
shown.
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Installation Instructions
Non-direct Mounting Methods
KH-AF Crankarm
Including Retaining Ring
CAUTION: The retaining clip supplied with the clamp is not used to mount the
KH-AF crankarm.
The KH-AF (-1) crankarm is used in non-direct coupled mounting applications.
The KH-AF (-1) may also be used to simultaneously direct couple to a damper
shaft and provide an additional crank arm connection to a second damper. The
KH-AFV V-bolt kit must be used for this non-direct application (see illustration
this page).
TWO SIZES ARE AVAILABLE:
KH-AFFor round shafts up to 3/4” or square shafts up to 5/8”
KH-AF-1For jackshafts up to 1.05”
KH-AFV V-bolt kit for KH-AF(-1) crankarm
Note: KH-AF (-1) crankarms cannot be used on AF Series 1 actuators.
KH-AF non-direct mounting with ZG-108 mounting bracket
Multiple dampers direct coupled to one actuator with linkage to
operate the other damper.
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KH-8 crankarm
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Installation Instructions
Electrical Operation
General
The AF series actuators utilize brushless DC motor technology. The AF uses
this motor in conjunction with an Application Specific Integrated Circuit (ASIC).
In the On/Off versions of the AF, the ASIC monitors and controls the actuator’s
rotation and a digital rotation sensing function to prevent damage to the
actuator. The AF24… modulating type actuators incorporate a built in
microprocessor. The microprocessor provides the intelligence to the ASIC to
provide a constant rotation rate and knows the actuator’s exact zero position.
Brushless DC Motor Operation
Belimo’s brushless DC motor spins by reversing the poles of stationary
electromagnets housed inside of a rotating permanent magnet. The
electromagnetic poles are switched by a special ASIC circuit developed by
Belimo. Unlike the conventional DC motor, there are no brushes to wear or
commutators to foul.
Overload Protection
The AF series actuators are protected from overload at all angles of rotation.
The ASIC circuit constantly monitors the rotation of the DC motor inside the
actuator and stops the pulses to the motor when it senses a stall condition.
The DC motor remains energized and produces full rated torque to the load.
This helps ensure that dampers are fully closed and that edge and blade seals
are always properly compressed.
Motor Position Detection
Belimo brushless DC motors eliminate the need for potentiometers for
positioning in modulating type actuators. Inside the motor are three “Hall
Effect” sensors. These sensors detect the spinning rotor and send pulses to
the microprocessor which counts the pulses and calculates the position to
within 1/3 of a revolution of the motor.
Control Accuracy and Stability
AF24-SR US actuators have built-in
brushless DC motors which provide
better accuracy and longer service life.
The AF24-SR US actuators are designed with a unique non-symmetrical
deadband. The actuator follows an increasing or decreasing control signal with a 80 mV resolution. If the signal changes in the opposite direction, the actuator will not respond until the control signal changes by 200
mV. This allows these actuators to track even the slightest deviation very
accurately, yet allowing the actuator to “wait” for a much larger change in
control signal due to control signal instability.
AF Actuator responds to a 80 mV signal
when not changing direction from stop
Satisfied
Control Position
80 mV
Minimum
Control Resolution
AF Actuator responds to a 200 mV signal
when reversing direction from stop position.
Minimum Reversed
Control Deadband
Prior to Normal Control
The AF24-MFT US control accuracy and stability can be found in the MFT
specifications, page 293.
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Installation Instructions
General Wiring Instructions
WARNING The wiring technician must be trained and experienced with
electronic circuits. Disconnect power supply before attempting any wiring
connections or changes. Make all connections in accordance with wiring
diagrams and follow all applicable local and national codes. Provide
disconnect and overload protection as required. Use copper, twisted pair,
conductors only. If using electrical conduit, the attachment to the actuator
must be made with flexible conduit.
Always read the controller manufacturer's installation literature carefully
before making any connections. Follow all instructions in this literature. If
you have any questions, contact the controller manufacturer and/or Belimo.
Transformers
The AF24 . . actuators require a 24 VAC class 2 transformer and draws a
maximum of 10 VA per actuator. The actuator enclosure cannot be opened in
the field, there are no parts or components to be replaced or repaired.
– EMC directive: 89/336/EEC
– Software class A: Mode of operation type 1
– Low voltage directive: 73/23/EEC
CAUTION: It is good practice to power electronic or digital controllers from a
separate power transformer than that used for actuators or other end devices.
The power supply design in our actuators and other end devices use half wave
rectification. Some controllers use full wave rectification. When these two
different types of power supplies are connected to the same power transformer
and the DC commons are connected together, a short circuit is created across
one of the diodes in the full wave power supply, damaging the controller. Only
use a single power transformer to power the controller and actuator if you
know the controller power supply uses half wave rectification.
Multiple Actuators, One Transformer
Multiple actuators may be powered from one transformer provided the following
rules are followed:
1. The TOTAL current draw of the actuators (VA rating) is less than or equal to
the rating of the transformer.
2. Polarity on the secondary of the transformer is strictly followed. This
means that all No. 1 wires from all actuators are connected to the common
leg on the transformer and all No. 2 wires from all actuators are connected
to the hotleg.
result in erratic operation or failure of the actuator and/or controls.
Mixing wire No. 1 & 2 on one leg of the transformer will
Multiple Actuators, Multiple Transformers
Multiple actuators positioned by the same control signal may be powered from
multiple transformers provided the following rules are followed:
1. The transformers are properly sized.
2. All No. 1 wires from all actuators are tied together and tied to the negative leg
of the control signal. See wiring diagram.
Wire Length for AF... Actuators
Keep power wire runs below the lengths listed in the Figure H. If more than
one actuator is powered from the same wire run, divide the allowable wire
length by the number of actuators to determine the maximum run to any single
actuator.
Example: 3 actuators, 16 Ga wire
350 Ft ÷ 3 Actuators = 117 Ft. Maximum wire run
MAXIMUM WIRE LENGTH
Wire SizeMax. Feet.Wire SizeMax. Feet
12 Ga900 Ft.18 Ga225 Ft.
14 Ga550 Ft.20 Ga125 Ft.
16 Ga350 Ft.22 Ga60 Ft.
FIGURE H
Wire Type and Wire Installation Tips
For most installations, 18 or 16 Ga. cable works well with the AF24... actuators.
Use code-approved wire nuts, terminal strips or solderless connectors where
wires are joined. It is good practice to run control wires unspliced from the
actuator to the controller. If splices are unavoidable, make sure the splice can
be reached for possible maintenance. Tape and/or wire-tie the splice to reduce
the possibility of the splice being inadvertently pulled apart.
The AF24... proportional actuators have a digital circuit that is designed to
ignore most unwanted input signals (pickup). In some situations the pickup
may be severe enough to cause erratic running of the actuator. For example, a
large inductive load (high voltage AC wires, motors, etc.) running near the
power or control wiring may cause excessive pickup. To solve this problem,
make one or more of the following changes:
1. Run the wire in metallic conduit.
2. Re-route the wiring away from the source of pickup.
3. Use shielded wire (Belden 8760 or equal).
ground. Do not connect it to the actuator common.
Ground the shield to an earth
Initialization of the AF24-SR US, and AF24-MFT US
When power is initially applied, the actuator will first release its manual preload
position (This assumes a manual position has been set). The actuator will then
rotate to the full fail-safe position. At this point the microprocessor recognizes
that the actuator is at full fail-safe and uses this position as the base for all of its
position calculations. The microprocessor will retain the initialized zero during
short power failures of up to 20 seconds. The AF24-MFT US will also return to
its position prior to the 20-second-or-less power loss. For power failures
greater than 20 seconds, the actuator would naturally return to its full fail-safe
position prior to the microprocessor losing its memory. The actuator will also
re-initialize if the manual position mechanism is used.
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Startup and Checkout
Instructions For AF24-SR US and AF24-MFT US + P-100…
AF24-SR US and AF24-MFT US + P-100… Electrical Check-out Procedure
STEPProcedureExpected Response
Control signal is applied to actuator.Actuator will move to its “Control
1.
Check power wiring.
2.
Correct any problems.
See Note 1.
Turn reversing switch to the correct
3.
position. Make sure the switch is
turned all the way left or right.
Make sure the control signal positive
4.
(+) is connected to Wire No. 3 and
control signal negative (-) is
connected to wire No. 1. Most
control problems are caused by
reversing these two wires. Verify
that the reversing switch is all the
way CCW or CW.
Check input signal with a digital volt
5.
meter (DVM). Make sure the input
is within the range of the actuator.
For AF24-SR US this is 2 to 10 VDC
or 4 to 20 mA.
NOTE: The input signal must be
above the 2 VDC or 4 mA to have
the actuator move.
Check damper torque requirement.Torque requirement is actuator’s
7.
Actuator works properly. Test
8.
controller by following controller
manufacturer's instructions.
Signal” position.
Power supply rating should be 7 the
total power requirement of the
actuator(s). Minimum voltage of
19.2 VAC or 21.6 VDC.
Actuator will move to its “Control
Signal” position.
Drives to “Control Signal” position.Actuator operates properly Step 7.Step 5.
Input voltage or current should be
±1% of what controller's adjustment
or programming
indicate.
minimum torque.
Gives Expected Response
Go To Step…
Actuator operates properly Step 7.No response at all Step 2.
Power wiring corrected, actuator
begins to drive Step 1.
Actuator operates properly Step 7.Does not drive toward “Control
Controller output (actuator input)
is correct. Input Polarity Correct
Step 6.
Defective Actuator.
Replace Actuator - See Note 2.
Operation is reversed Step 3.
Does not drive toward "Control
Signal Position" Step 4.
Power wiring corrected, actuator still
does not drive Step 4.
Signal Position” Step 4.
Reprogram, adjust repair or replace
controller as needed Step 1.
Recalculate actuator requirement and
correct installation.
Does Not Give
Expected Response
Go To Step…
NOTE 1 Check that the transformer(s) are sized properly.