Belimo AFB Series User Manual

800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN
5
7
AFB24-SR, AFB24-SR-S, AFX24-SR, AFX24-SR-S
P
roportional, Sprin
g
Return, 24 V, for 2 to 10 VDC or 4 to 20 mA Control Si
g
nal
T
or
q
ue min. 180 in-lb,
f
or control o
f
air dam
p
er
s
A
pp
l
i
cat
i
o
n
F
or proportional modulation of dampers in HVAC systems. Actuator sizing should be
d
one in accordance with the dam
p
er manu
f
acturer’s s
p
eci
f
ications.
T
he actuator is mounted directl
y
to a dam
p
er sha
f
t u
p
to 1.05” in diameter b
y
means
o
f its universal clamp. A crank arm and several mounting brackets are available for
a
pplications where the actuator cannot be direct coupled to the damper sha
f
t
.
T
he actuator o
p
erates in res
p
onse to a 2 to 10 VDC, or with the addition of a 50
0
Ω
r
esistor, a 4 to 20 mA control in
p
ut from an electronic controller or
p
ositioner. A 2 to
10 VDC feedback si
g
nal is provided for position indication. Not to be used for a
master-slave a
pp
lication
.
O
p
eratio
n
T
he AFB and AFX series actuators provide true sprin
g
return operation for reliable fail-
s
afe application and positive close-off on air ti
g
ht dampers. The sprin
g
return system
p
rovides constant tor
q
ue to the dam
p
er with, and without,
p
ower a
pp
lied to the
ac
t
ua
t
o
r
.
T
he AFB and AFX series provides 95° o
f
rotation and is provided with a
g
raduated
p
os
i
t
i
on
i
n
di
cator s
h
ow
i
ng 0° to 95°.
T
he AFB24-SR and AFX24-SR uses a brushless DC motor which is controlled by an
A
pplication Specific Inte
g
rated Circuit
(
ASIC
)
and a microprocessor. The
microprocessor provides the intelligence to the ASIC to provide a constant rotation rate
a
nd to know the actuator’s exact fail-safe
p
osition. The A
S
I
C
monitors and controls
the brushless D
C
motor’s rotation and provides a digital rotation sensing function to
p
revent dama
g
e to the actuator in a stall condition. The actuator may be stalled
a
nywhere in its normal rotation without the need o
f
mechanical end switches
.
T
he AFB24-SR-S and AFX24-SR-S versions are provided with two built-in auxiliary
s
witches. These SPDT switches provide safety interfacin
g
or si
g
nalin
g
, for example, for
f
an start-up. The switching
f
unction at the
f
ail-sa
f
e position is
f
ixed at +10°, the other
s
witch function is adjustable between +10° to +90°. The AFB24-
S
R, AFB24-
S
R-
S
,
A
FX24-
S
R and AFX24-
S
R-
S
actuator is shipped at +5°
(
5° from full fail-safe
)
to
p
rovide automatic compression a
g
ainst damper
g
askets for ti
g
ht shut-off
.
ATTENTI
O
N
:
AFB24-SR
(
-S
)
and AFX24-SR
(
-S
)
c
annot
b
e tan
d
em mounte
d
on t
h
e
s
ame dam
p
er or valve shaft.
O
nl
y
O
n
/O
ff and MFT AF models can be used for tandem
mount app
li
cat
i
ons.
Dimensions (Inches [mm])
K7-2 (supplied)
1/2" Centered
(Default)
3/4" Centered
(Field Selectable)
1.05" Centered
(Field Selectable)
WAFBNFBDim
Technical Data AFB24-SR, AFB24-SR-S,
AFX24-SR, AFX24-SR-S
Power su
pp
l
y
24 VAC ±20%, 50/60 Hz
24 VD
C
+20%
/
-10
%
Power consumption running
5
.5
W
holdin
g
3
W
Trans
f
ormer sizing 8.5 VA (class 2 power source
)
Electrical connectio
n
A
FB..
.
3
ft, 18 GA appliance cable, 1/2" conduit
c
onnec
t
or
-S models: two 3
f
t, 18 gauge appliance cables
w
ith 1
/
2”
co
n
du
it
co
nn
ec
t
o
r
s
AFX
...
3
f
t [1m], 10 ft [3m] or 16 ft [5m] 18
G
A
appliance or plenum cables, with or without 1
/
2”
c
onduit connecto
r
-S m
o
dels: Two 3
f
t
[
1m
]
, 10
f
t
[
3m
]
or
1
6 ft
[
5m
]
appliance cables, with or without 1/2"
c
on
d
u
i
t connectors
Overload
p
rotectio
n
electronic throughout 0 to 95° rotation
Operatin
g
ran
g
e Y 2 to 10 VDC
,
4 to 20mA
In
p
ut im
p
edanc
e
1
00 k
Ω
for 2 to 10 VDC
(
0.1 mA
)
500
Ω
f
o
r 4 t
o
2
0
mA
Feedback out
p
ut
U
2 to 10 VDC (max. 0.5 mA)
Tor
q
ue
1
80 in-lb
[
20 Nm
]
minimu
m
Direction o
f
rotatio
n
s
prin
g
r
eversible with CW/CCW mountin
g
mo
t
o
r
r
evers
ibl
e w
i
t
h
b
u
il
t-
i
n sw
i
tc
h
M
echanical an
g
le o
f
rotatio
n
95°
(
ad
j
ustable with mechanical end stop, 35° to
95°
)
Runnin
g
time
s
pr
i
n
g
<
20 seconds @ -4°F to 122°F
[
-20°C to 50°C
];
<
60 seconds
@
-22°F
[
-30°
C]
m
oto
r
95
seco
n
ds
P
os
i
t
i
on
i
n
di
cat
i
o
n
vi
sua
l
i
n
di
cator, 0° to 95°
(
0° is
f
ull spring return position)
Ma
n
ua
l
o
v
e
rri
de
5
mm hex crank (
³⁄
₁₆
"
Allen), supplie
d
Humidity
m
ax. 95% RH non-condensin
g
A
m
bi
ent temperatur
e
-
22°F to 122°F
[
-30°
C
to 50°
C]
S
tora
g
e temperature
-
40°F to 176°F
[
-40°
C
to 80°
C]
Housin
g
N
ema 2, IP54, Enclosure T
yp
e
2
Housin
g
materia
l
zinc coated metal and plastic casin
g
Ag
ency
li
st
i
n
gs
†
c
ULus acc. to UL60730-1A/-2-14, CAN/CSA
E
60730-1:02,
C
E acc. to 2004
/
108
/
E
C
&
2
006/95/
E
C
N
o
i
se
l
e
v
e
l ≤40dB
(
A
)
motor @ 95 seconds
≤62
dB(A)
spr
i
n
g
return
S
ervicing
ma
int
e
n
a
n
ce
f
r
ee
Quality standar
d
ISO
900
1
Weigh
t
4.6 lbs (2.1 kg); 4.9 lbs (2.25 kg) with switches
† Rated Impulse Voltage 800V, Type of action 1.AA (1.AA.B for -
S
version),
C
ontrol Pollution Degree 3.
A
FB24-
S
R-
S
, AFX24-
S
R-
S
Auxiliary switches 2 x
S
PDT 3A
(
0.5A
)
@
250 VA
C
, UL approved
one set at +10°, one ad
j
ustable 10° to 90
°
N40103 - 09/11 - Subject to change. © Belimo Aircontrols (USA), Inc
.

Belimo AFB Series Specifications

General

Brand	Belimo
Model	AFB Series
Category	Controller
Language	English