Belimo AF24-SR US Parts list manual

800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA
22
Technical Data AF24... US
Power supply 24 VAC ± 20% 50/60 Hz
24 VDC ± 10%
Power consumption
running 6 W
holding 2 W
Transformer sizing 10 VA (class 2 power source)
Electrical connection 3 ft, 18 GA appliance cable
1/2” conduit connector
Overload protection electronic throughout 0 to 95° rotation
Operating range Y 2 to 10 VDC, 4 to 20 mA
Input impedance 100 k7(0.1 mA), 500 7
Feedback output U 2 to 10 VDC (max. 0.5 mA) for 95°
Angle of rotation mechanically limited to 95°
Torque 133 in-lb [15 Nm] constant
Direction of rotation
spring reversible with cw/ccw mounting
motor reversible with built-in switch
Position indication visual indicator, 0° to 95°
(0° is spring return position)
Manual override 3mm hex crank (shipped w/actuator)
Running time 150 sec. constant, independent of load,
spring return < 20 sec
Humidity 5 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 material zinc coated metal
Agency listings cULus acc. to UL 873 and
CAN/CSA C22.2 No. 24-93
Noise level max. 45 dB (A)
Servicing maintenance free
Quality standard ISO 9001
Weight 6.0 lbs (2.7 kg)
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. 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
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 fail-
safe 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.
Dimensions (Inches [mm])
1.97"
3.15" [80]
3.86" [98] 3.25" [82.7]
2.24"
[57]
[50]
1.93"
[49]
2.64"
[67] 0.26" [6.5]
5.85" [148.5]
10.47" [266]
0.35" [9]
0.39" [10]
0.65" [16.5]
0.19" [5]
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
D001
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.
K20901 - 01/09 - Subject to change. © Belimo Aircontrols (USA), Inc.

800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA
23
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.
Accessories
AV 10-18 Shaft extension
IND-AF2 Damper position indicator
K4 US Universal clamp for 3/8” to 3/4” shafts
K4-1 US Universal clamp for up to 1.05” dia jackshafts
K4-H Universal clamp for hexshafts 3/8” to 5/8”
KH-AF Crankarm for up to 3/4” round shaft (Series 2)
KH-AF-1 Crankarm for up to 1.05” jackshaft (Series 2)
KH-AFV V-bolt kit for KH-AF and KH-AF-1
Tool-06 8mm and 10 mm wrench
SGA24 Min. and/or man. positioner in NEMA 4 housing
SGF24 Min. and/or man. positioner for flush panel mounting
ZG-R01 500 7resistor for 4 to 20 mA control signal
ZG-HTR Thermostat/Heater Kit
ZDB-AF2 US Angle of rotation limiter
ZG-100 Universal mounting bracket
ZG-101 Universal mounting bracket
ZG-102 Multiple actuator mounting bracket
ZG-103 Universal mounting bracket
ZG-104 Universal mounting bracket
ZG-106 Mounting bracket for Honeywell®Mod IV replacement or
new crankarm type installations
ZG-107 Mounting bracket for Honeywell®Mod III or Johnson®
Series 100 replacement or new crankarm type installations
ZG-108 Mounting bracket for Barber Colman®MA 3../4..,
Honeywell®Mod III or IV or Johnson®Series 100
replacement or new crankarm type installations
ZG-AF US Crankarm adaptor kit for AF/NF
ZG-AF108 Crankarm adaptor kit for AF/NF
ZS-100 Weather shield (metal)
ZS-150 Weather shield (polycarbonate)
ZS-260 Explosion-proof housing
ZS-300 NEMA 4X housing
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).
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 7resistor, 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. 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.
Wiring Diagrams
1Provide overload protection and disconnect as required.
2CAUTION Equipment damage!
Actuators may be connected in parallel.
Power consumption and input impedance must be observed.
3Actuators may also be powered by 24 VDC.
5Only connect common to neg. (–) leg of control circuits.
The ZG-R01 500 7resistor 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.
Control Signal
(+)
2 to 10 VDC
(–)
1 Common
2 + Hot
3 Y Input, 2 to 10V
5 U Output 2 to 10V
1
2
3
24 VAC Transformer
AF24-SR US
Line
Volts
W011
2 to 10 VDC control
W197_08
4 to 20 mA control
K20901 - 01/09 - Subject to change. © Belimo Aircontrols (USA), Inc.