800-543-9038
USA
866-805-7089
CANADA
203-791-8396
LATIN AMERICA
1
08/10 - Subject to change.
© Belimo
Aircontrols (USA),
Inc.
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 qualifi ed 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 compo-
nents could result in death or serious injury.
Control Signal
(+)
2 to 10 VDC
(–)
1 Common
2 + Hot
3 Y1 Input,
2 to 10V
5 U Output
2 to 10V
1
3
24 VAC Transformer
AFRB24-SR, AFRB24-SR-S
AFRX24-SR, AFRX24-SR-S
Line
Volts
W068_AFRB(X)24-SR
2 to 10 VDC control of AFRB24-SR and AFRX24-SR
AFRB24-SR, AFRB24-SR-S
AFRX24-SR, AFRX24-SR-S
W069_AFRB(X)24-SR
4 to 20 mA control of AFRB24-SR and AFRX24-SR with
2 to 10 VDC feedback output
AFRB24-SR-S
AFRX24-SR-S
W064_AFRB(X)24_SR_-S
Auxiliary switches for AFRB24-SR-S, AFRX24-SR-S
AFRB24-SR, AFRB24-SR-S, AFRX24-SR, AFRX24-SR-S
Proportional, Spring Return, 24 V, for 2 to 10 VDC or 4 to 20 mA Control Signal
Technical Data
AFRB24-SR, AFRB24-SR-S,
AFRX24-SR, AFRX24-SR-S
Power supply
24 VAC ±20%, 50/60 Hz
24 VDC +20% / -10%
Power consumption
running 5.5 W
holding 3 W
Transformer sizing
8.5 VA (class 2 power source)
Electrical connection
AFRB...
3 ft, 18 GA appliance cable, 1/2" conduit
connector
-S models:
two 3 ft, 18 gauge appliance cables
with 1/2” conduit connectors
AFRX...
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 90° rotation
Operating range Y
2 to 10 VDC, 4 to 20mA
Input impedance
100 k
Ω
for 2 to 10 VDC (0.1 mA)
500
Ω
for 4 to 20 mA
Feedback output U
2 to 10 VDC (max. 0.5 mA)
Direction of rotation
spring reversible with CW/CCW mounting
motor reversible with built-in switch
Mechanical angle of rotation
90° (adjustable with mechanical end stop, 35° to
90°)
Running time
spring < 20 seconds @ -4°F to 122°F [-20°C to 50°C];
< 60 seconds @ -22°F [-30°C]
motor 90 seconds
Position indication
visual indicator, 0° to 90°
(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
Agency listings
†
cULus acc. to UL60730-1A/-2-14, CAN/CSA
E60730-1:02, CE acc. to 2004/108/EC &
2006/95/EC
Noise level
≤
40dB(A) motor @ 90 seconds
≤
62dB(A) spring return
Quality standard
ISO 9001
† Rated Impulse Voltage 800V, Type of action 1.AA (1.AA.B for -S version), Control Pollution Degree 3.
AFRB24-SR-S, AFRX24-SR-S
Auxiliary switches
2 x SPDT 3A (0.5A) @ 250 VAC, UL approved
one set at +10°, one adjustable 10° to 90°
Wiring Diagrams
1
Provide overload protection and disconnect as required.
3
Actuator may also be powered by 24 VDC.
4
For end position indication, interlock control, fan startup, etc., AFRB24-SR-S
and AFRX24-SR-S incorporates two built-in auxiliary switches: 2 x SPDT,
3A (0.5A) @250 VAC, UL Approved, one switch is fi xed at +10°, one is
adjustable 10° to 90°.
5
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.
71074-00004
