Selection Guide

800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA
9
2
NFB24-MFT, NFX24-MFT + P-100… Electrical Check-Out Procedure
S
TEP Pr
ocedu
r
e
Expected Response
G
ives Expected Response
G
o To Step…
D
o
es N
o
t
G
iv
e
Expected Response
Go To Step…
1.
C
ontrol signal is applied to actuator. Actuator will move to its “
C
ontrol
Signal” position
.
A
ctuator operates proper
l
y
S
tep 7.
N
o response at a
ll
S
tep 2.
Op
eration is reversed Ste
p
3.
D
oes not drive toward "Control Signal
P
osition"
S
tep 4.
2
.
Check power wiring
.
Correct any problems
.
See
N
o
t
e
1.
Power supply rating should be the total
power requirement of the actuator
(
s
)
.
Minimum volta
g
e of 19.2 VAC or 21.6
V
D
C
.
P
ower wiring corrected, actuator
b
e
gi
ns to
d
r
i
ve Step 1.
P
ower wiring corrected, actuator still
does
n
o
t
d
r
i
v
e
Step 4.
3
.
T
urn revers
i
ng sw
i
tc
h
to t
h
e correct
p
osition. Make sure the switch is
turned all the way left or right.
Actuator will move to its “
C
ontrol
Si
g
nal” position
.
A
ctuator operates proper
l
y
S
tep 7.
D
oes not drive toward “
C
ontrol
S
ignal
Pos
iti
o
n”
S
tep 4
.
4.
M
ake sure the control signal positive
(
+
)
is connected to Wire No. 3 and
c
ontrol si
g
nal ne
g
ative
(
-
)
is connected
to w
i
re
N
o. 1.
M
ost contro
l
pro
bl
ems
are caused by reversing these two
wires. Verify that the reversin
g
switch
i
s all the way CCW or CW
.
Drives to “Control Signal” position
.
A
ctuator o
p
erates
p
ro
p
erl
y
S
te
p
7.
S
te
p
5.
5
.
Check input si
g
nal with a di
g
ital volt
meter
(
DVM
)
. Make sure the input
i
s within the range of the actuator.
NOTE
:
The input signal must be
abo
v
e
th
e
2 VD
C
o
r 4 mA t
o
h
a
v
e
the actuator move
.
Input volta
g
e or current should be ±1%
o
f
what controller's ad
j
ustment or
programm
i
ng
i
n
di
cates.
C
ontroller output
(
actuator input
)
i
s correct. Input Polarity Correct
S
tep 6.
R
epro
g
ram, ad
j
ust repair or replace
c
ontroller as needed Step 1.
6
.
Check dam
p
er tor
q
ue re
q
uirement
.
Tor
q
ue re
q
uirement is actuator’s
mi
n
i
mum torque
.
D
efective Actuator
.
R
ep
l
ace
A
ctuator -
S
ee N
o
te 2.
R
ecalculate actuator re
q
uirement and
co
rr
ec
t
i
n
s
t
alla
t
io
n.
7
.
Actuator works properly. Test
c
ontroller by
f
ollowing controller
manufacturer's instructions
.
NOTE
1
Check that the transformer(s) are sized properly.
• If a common transformer is used, make sure that polarity is observed on the secondary. This means connect all No. 1 wires to one leg of the transformer and all
No. 2 wires to the other le
g
of the transformer.
• If multiple transformers are used with one control si
g
nal, make sure all No. 1 wires are tied to
g
ether and tied to control si
g
nal ne
g
ative
(
-
)
.
•
C
ontrollers and actuators must have separate 24 VA
C/
VD
C
power sources
.
NOTE 2 I
f
f
ailure occurs within 5 years
f
rom original purchase date, noti
f
y Belimo and give details o
f
the application.
S
tartu
p
and
C
heckou
t
Instructions For NFB24-MFT
,
NFX24-MFT + P-100…
M40024 - 05/10 - Sub
j
ect to chan
g
e. © Belimo Aircontrols
(
USA
)
, Inc.