Belimo AFB24-MFT - AFB24-MFT95;AFX24-MFT95 Series: Technical Details; Technical Data and Specifications; Application and Operation

800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN
65
AFB24-MFT95, AFX24-MFT95
P
roportional, Sprin
g
Return, 24 V, for Use with Honeywel
l
®
Electronic Series 90 or a 0 to 135
Ω
I
n
p
u
t
• Torque m
i
n. 180
i
n-l
b
• Control fixed, 0 to 135
Ω
input, or Honeywell series 90 (fixed
)
• Feedback 2 to 10 VD
C
(
DEFAULT
)
A
pp
l
i
cat
i
o
n
F
or proportional modulation of dampers and control valves in HVA
C
systems. The
AFB24-MFT95, AFX24-MFT95 provides mechanical spring return operation for reliable
fail-safe a
pp
lication.
D
efault/Configuratio
n
D
efault
p
arameters for 0 to 135
Ω
In
p
ut a
pp
lications of the AFB24-MFT95 and AFX24
-
MFT95 actuator are assi
g
ned durin
g
manufacturin
g
. If required, custom versions of the
actuator can be ordered. However the control in
p
ut cannot be modified via MFT PC
tool software. The
p
arameters noted in the Technical Data table are variable.
Th
ese parameters can
b
e c
h
ange
d
b
y t
h
ree means
:
•
Pre-set confi
g
urations from Belimo
•
C
ustom configurations from Belimo
•
Confi
g
urations set by the customer usin
g
the MFT PC tool
(
version 3.4 or hi
g
her
)
s
oftware a
pp
lication
.
Op
eratio
n
T
he AFB24-MFT95, AFX24-MFT95 actuator provides 95° o
f
rotation and is provided
w
ith a
g
raduated position indicator showin
g
0° to 95°. The actuator will synchronize
t
h
e 0° mec
h
an
i
ca
l
stop or t
h
e p
h
ys
i
ca
l
d
amper or va
l
ve mec
h
an
i
ca
l
stop an
d
use t
hi
s
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 o
f
a crank supplied
w
ith the actuator. When power is applied the manual override is released and the
actuator drives toward the fail-safe position.
T
he actuator uses a brushless D
C
motor which is controlled by an Application
S
pecific
I
nte
g
rated Circuit
(
ASIC
)
and a microprocessor. The microprocessor provides the
intelli
g
ence to the ASIC to provide a constant rotation rate and to know the actuator’s
exact
p
osition. The ASIC monitors and controls the brushless DC motor’s rotation and
provides a Digital Rotation
S
ensing (DR
S
) function to prevent damage to the actuator
in a stall condition. The position
f
eedback signal is generated without the need
f
or
mechanical feedback potentiometers usin
g
DRS. The actuator may be stalled
an
y
where in its normal rotation without the need of mechanical end switches.
T
he AFB24-MFT95, AFX24-MFT95 is mounted directly to control sha
f
ts up to 1.05"
diameter by means of its universal clamp and anti-rotation bracket. A crank arm and
s
everal mounting brackets are available for damper applications where the actuator
cannot be direct coupled to the damper sha
f
t. The sprin
g
return system provides
minimum speci
f
ied torque to the application durin
g
a power interruption. The AFB24-
MFT95, AFX24-MFT95 actuator is shipped at +5°
(
5° from full fail-safe
)
to provide
automatic compression a
g
ainst damper
g
askets
f
or ti
g
ht shut-o
ff.
Technical Data AFB24-MFT95, AFX24-MFT95
Power supply 24 VA
C,
+
/
- 20%
,
50
/
60 H
z
24 VDC
,
+20% / -10%
Power
consum
p
t
i
o
n
runnin
g
7.5 W
holdin
g
3 W
Trans
f
ormer sizin
g
10 VA
(
Class 2 power source
)
Elec
tr
ical
co
nn
ec
t
ion
AFB
24-
MFT
95 3 ft, 18 GA plenum cable
,
with 1
/
2”
co
n
du
it
co
nn
ec
t
o
r
AFX
24-
MFT95
3 ft
[
1m
]
, 18
G
A plenum cable
,
with or without 1
/
2” conduit connecto
r
O
verload protectio
n
electronic throughout 0 to 95° rotatio
n
Operatin
g
ran
g
e Y
0
to
13
5
Ω
Honeywell Electronic Series 90,
0 to 135
Ω
input
Feedback output U
*
2 to 10 VDC, 0.5 mA ma
x
T
orque
mi
n
i
mum 180
i
n-
lb
(
20
N
m
)
Di
r
ec
t
ion
o
f r
o
t
a
ti
o
n*
spr
i
n
g
reversible with cw/ccw mountin
g
motor revers
ibl
e w
i
t
h
b
u
il
t-
i
n sw
i
tc
h
M
ec
h
an
i
ca
l
an
g
le o
f
rotation
*
95°
(
a
dj
usta
bl
e w
i
t
h
mec
h
an
i
ca
l
en
d
stop, 35° to 95°
)
Running time sprin
g
<20 seconds
@
-4°F to 122°F [-20°
C
to 50°
C
];
<60 seconds
@
-22°F [-30°
C]
m
o
t
o
r
*
150 seconds
(
default
)
, variable
(
70 to 220 seconds
)
An
g
le o
f
Rotation
a
d
a
p
tat
i
on
o
ff
(
de
f
ault
)
P
os
iti
o
n in
d
i
ca
ti
on
visual indicator, 0° to 95
°
(0° is spring return position
)
M
anua
l
overr
id
e 5 mm
h
ex cran
k
(
³⁄
₁₆
"
All
en
)
, supp
li
e
d
Humidit
y
m
ax. 95% RH, non-condensin
g
A
m
bi
ent temperatur
e
-22 to 122° F
(
-30 to 50°
C)
S
tora
g
e temperature -40 to 176° F
(
-40 to 80°
C)
Housin
g
NEMA 2, IP54, Enclosure Type
2
Housin
g
material zinc coated metal and plastic casin
g
Noise leve
l
≤
4
0dB
(
A
)
motor @ 150 seconds, run time dependen
t
≤
6
2dB
(
A
)
sprin
g
return
A
g
ency listin
g
s † cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730
-
1:02
,
CE acc. to 2004/108/EC & 2006/95/EC
Qualit
y
standard I
SO
900
1
S
ervicing
ma
int
e
n
a
n
ce
f
r
ee
W
e
i
g
ht
4.6
lb
s.
(
1.9
k
g
)
*
Variable when con
f
igured with MFT options
† Rated Impulse Volta
g
e 800V, Type of action 1.AA
(
1.AA.B for -
S
version
)
,
C
ontrol Pollution De
g
ree 3.
Programmed for 70 seconds motor run time. At 150 sec motor run time, transformer sizing is 8.5 V
A
a
nd power consumption is 6 W running / 3 W holding
.
Dimensions (Inches [mm])
A
FBNFBDim
K7-2 (supplied)
1/2" Centered
(Default)
3/4" Centered
(Field Selectable)
1.05" Centered
(Field Selectable)
N40103 - 09/11 - Subject to change. © Belimo Aircontrols (USA), Inc
.