Selection Guide

800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA
7
2
NFB24-
S
R
,
NFB24-
S
R-
S,
NFX24-
S
R
,
NFX24-
S
R-
S
Proportional, Sprin
g
Return, 24 V, for 2 or 10 VDC to 4 to 20 mA Control Si
g
nal
Accessories
AV 8-2
5
S
haft extension
IND-AFB Damper position indicator
KH-AF
B
C
rank arm
K7-2 Universal clamp for up to 1.05” dia jackshafts
TF-
CC
U
S
C
onduit fitting
T
oo
l-
06
8
mm
a
n
d
1
0
mm wr
e
n
ch
Z
G
-1
00
Universal mountin
g
bracke
t
Z
G
-101
U
n
i
versa
l
mount
i
ng
b
rac
k
e
t
ZG-11
8
Mounting bracket for Barber Colma
n
®
MA 3../4.., Honeywel
l
®
Mod III or IV or Johnso
n
®
Series 100 re
p
lacement or new crank
arm type installation
s
ZG-AF
B
C
rank arm ada
p
tor kit
Z
G
-AFB118
C
rank arm adaptor kit
ZS-100 Weather shield (metal
)
Z
S
-150
W
eat
h
er s
hi
e
ld
(
po
l
ycar
b
onate
)
Z
S
-260
E
xplosion-proof housin
g
Z
S
-
300
N
EMA 4X housin
g
NOTE: When using NFB24-SR, NFB24-SR-S, NFX24-SR and NFX24-SR-S actuators, only use
accessories listed on this pa
g
e.
F
or actuator wiring information and diagrams, refer to Belimo Wiring
G
uide.
Typical Specification
Spring return control damper actuators shall be direct coupled type which require no
c
rank arm and linka
g
e and be capable o
f
direct mountin
g
to a
j
acksha
f
t up to a 1.05”
diameter. The actuator must
p
rovide
p
ro
p
ortional dam
p
er control in res
p
onse to a 2 to
10 VD
C
or, with the addition of a 50
0
Ω
resistor, a 4 to 20 mA control input
f
rom an
electronic controller or positioner. The actuators must be desi
g
ned so that they may be
used
f
or either clockwise or counterclockwise
f
ail-sa
f
e operation. Actuators shall use
a brushless D
C
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 si
g
nal shall be provided for position feedback. Actuators shall be
c
ULus Approved and have a 5 year warranty, and be manufactured under ISO 9001
I
nternational Quality Control Standards. Actuators shall be as manufactured by Belimo
.
Wiring Diagrams
1
Provide overload protection and disconnect as required
.
2
C
A
U
TI
ON
Equipment Damage
!
A
ctuators may
b
e connecte
d
i
n para
ll
e
l.
Power consum
p
tion and in
p
ut im
p
edance must be observed.
2
U
p
to 4 actuators ma
y
be connected in
p
arallel. With 4 actuators
wir
ed
t
o
o
n
e
500
Ω resistor. Power consum
p
tion must be observed.
3
Actuator may also be powered by 24 VD
C.
4
For end position indication, interlock control, fan startup, etc., NFB24-SR-S
and NFX24-
S
R-
S
incorporates two built-in auxiliary switches: 2 x
S
PDT, 3A
(0.5A)
@
250 VA
C
, UL Approved, one switch is fi xed at +10°, one is adjust
-
able 10° to 90°
.
5
Only connect common to ne
g
.
(
–
)
le
g
of control circuits
T
h
e
Z
G
-R
0
1
500
Ω
res
i
stor converts t
h
e 4 to 20 m
A
contro
l
s
i
gna
l
t
o
2 t
o
1
0
VD
C
.
WARNING
Live Electrical Components!
G
Durin
g
installation, testin
g
, servicin
g
and troubleshootin
g
o
f
this product, it may be
necessary to work with live electrical components. Have a quali
fi
ed licensed electrician or other
individual who has been properly trained in handlin
g
live electrical components perform these
tasks. Failure to follow all electrical safet
y
p
recautions when ex
p
osed to live electrical com
p
o
-
nents could result in death or serious in
j
ury
.
Control Signal
(+)
2 to 10 VDC
(–)
1 Common
2 + Hot
3 Y
1
Input,
2 to 10V
5 U Output
2 to 10V
1
2
3
24 VAC Transformer
NFB24-SR, NFB24-SR-S
NFX24-SR, NFX24-SR-S
Line
Volts
W068_NFB
(
X
)
24-S
R
2
t
o
1
0
VD
C
co
ntr
o
l
o
f NFB24-
S
R
a
n
d
NFX24-
S
R
NFB24-SR, NFB24-SR-S
NFX24-SR, NFX24-SR-S
W
069_NFB
(
X
)
24-S
R
4
to 20 mA control of NFB24-SR and NFX24-SR wit
h
2
to 10 VDC feedback output
NFB24-SR-S
NFX24-SR-S
W064_NFB
(
X
)
24_SR_-
S
Auxiliar
y
switches for NFB24-SR-S, NFX24-SR-S
M40024 - 05/10 - Sub
j
ect to chan
g
e. © Belimo Aircontrols
(
USA
)
, Inc.