Troubleshooting - Fuji Electric FWD Series Instruction Manual

10. Troub bleshoot
If y you encount ter any probl
con ntact our bra anch or sale
P henomenon
Even ope erating the
Settin ngs buttons, unable to set a
settings v value.
The mea asurement
aberratio on indicator light
▲
Insta llation
It starts u up but does not
start acc cumulation
immedia tely.
The insta antaneous
flow-rate e shows a negat
value.
Pulses a are counted
incorrect tly.
Wirin g
conne ection
The curr ent value of the
4-20mA output is too sm
ting
lems that ca annot be res
es office.
Possible caus
Attempting to set a value t
the range o of settable value
Using a flui id other than air
Using the m meter outside its
specificatio ons (such as for
ts.
conditions, pressure, temp
Foreign ma aterial is attache
interior of th he measuremen
ultrasonic s sensors.
There is a m major source of
noise near the flow meter.
Carrying ou ut adjustments d
pressure flu uctuations.
The directio on of the fluid fl
tive flow directio on of the meter
of each oth her.
The pull-up p resistor is too
The pull-up p resistor is too
The one-sh hot pulse ON tim
or smaller t than the signal
minimum in nput signal widt
Load resist tance is 400Ω o
e
The setting g value for the a
mall.
FS flow-rat te is too large.
solved by tak king the step
se
Check to see tha C
nitrogen) indicat n
that is outside time of settings t
es. l ights, this is ind
set a value outs s
values. v
r or nitrogen.
s range of
r installation
perature).
Check all remind C
ed to the
specifications an s
nt pipe or
f electrical
Check to see if t C
between the ma b
flickering. f
due to I f it is, it means t
undergoing adju u
fluctuations. Thi f
complete in abo c
accumulation sh a
ow and the Check to see tha C
are opposite surface of the flo s
the direction of t t
large. Check the signa C
ON current and O
small.
pull-up resistor. p
Make sure to se M
me is equal to
time sufficiently t
receiver's
signal receiver's s
h.
width. w
or larger Keep the resista K
analog output S Set an appropria
flow-rate [F2] to f
35 5
ps described d below, plea
Rem medial action
at the kind of ga as (air or
tor does not ligh ht at the
mode. If this ind dicator
dication of attem mpting to
side the range of f settable
ders regarding
nd installation.
the partition line e
ain and sub-disp plays is
that the meter i s
ustments for pre essure
is should typica lly
out 1 minute afte er which
hould begin.
at the arrow on the
ow meter is poi nting in
the fluid flow.
al receiver's spe ecified
select an appro opriate
et the one-shot p pulse ON
large enough fo or the
s minimum inpu t signal
ance below 400 Ω
ate analog outp put FS
o suit your needs s.
ase
Refer rence
pag ge
12 2
12 2
30 0
7 7
28 8
28 8
27 7
2 1