LFE 2000 Series - Page 72

958_3
I
REV.
B
Advance
the
dlsplay
to
show
the
setpornt
on
the
bot[orrr
lrne.
Using
the Up and
DowN
arrows,
adjust
the
setpoint
to the
same
value
as the
process
varjable
shown
on
the
top
line.
Press
the
DISPLAY
key
until
the bottonr
line
shows
oUTl XXXZ
or
OUT2
XXX%.
9'
If
the
MAN
indicator
is
blinkine press
rhe
START/STOP
key ro
turn
the
inclrcator
off.
10.
Adjust
the
calibratron
source
untrl
the
Display
shows
oUTl
l0oz,
11.
Adjust
potentiotneter
R10l
for
analog
OUTPUT
1 or
R100 for
analoe
ouTpUT
2 for
a
digital
voltage
indication
of
5V
r0.l
VDC.
12,
t1
t4.
15.
Adjust
the
calrbratron
source
untrl
the
display
shows oUTl
Oi(
or oUT2
02.
The
digrtal
voltrneter
reading
should
be
approxjrnately
O.
Repeat
steps
l0
t-hrough
l2
for
the second
0/5 VDC
Analog
Output
as
requjre4.
Check
the
performance
by
varyrng
the
percent
(y")
OUTPUT
POWER
and
rroting
that
ANAI,OG
Our
dieital
voltate
rnclrcation
varres
accor-dingly.
Followint
calibratron
remove
the
control
ler
frorn
the cal
tbrat ion
connector.
anci
reinstall
into
its
controller
case.
(NOTE:
For older
control
ters,
make
sure
that
the
el
ectronic
assembly
js
mated
wtth
the
s.tme compensat.or
res
istor
tha1
was
used
for
input
calibrat-ion.
Otherwise,
the
control
ler rnust
be
r-ecallbraterl
per
Sectrorr
6.
I 2.
Oi
IO VDC
ANALOG
OUTPTJT
I AND
ANALOG
OUTPUT
2
TES'I'
CONTROLLERS
WITH
AUTO/MANUAL,
FEATURE
7
,2.3
7
,2,3
.1
1.
t.
The
0/10
VDC
analoB
output
circuit
has no
calibration
adjustment-s.
installation
into
the calrbration
case
is not
rectuired.
The re fo
re
,
1
Most
analog
loads
are
hrgh
i,nrpedance.
It
is theref rlre
nor-rnal to
cal rbr;rte
the
out-put
wrthout
a
load.
When
it is
known that,
the load wr11
be
lower, that
specrf
lc load
resjstance
(minimunr
20000)
shorrld
connected
;tcr'oss
r)lll
plll
ternrrnals
4 and
5 for
ANALOG
OUTPUT
I and/or
across tenninals
D and
E for
ANA[,()G
OUTPUT
2.
Then
connect
a digital
voltneter
across
OUTPUT
1 or OUTPIJT
2 rear
termrnals.
Allow
a 5 minute
warmup
before
proceding
with the
next step.
Advance
the
display
in the
OPERATOR
L00P
until OUT
I XZ or OUT
2 X%
js
displayed.
If the
MAN
indicator
rs flashing,
press
START/STOP
key and thetr
press
AUT0/MANUAL
key until
the MAN rndrcator
lamp is
illuminated.
Press
the
UP
ARROI{
key until
the OUT
I or OUT
2 display indicates
1007..
7
The dleital
voltmeter
should
now read
l0
Reduce
the
% OUTPUT
with
the
DOIJN ARR0W
reading
changes
accordlngly.
Repeat
steps 4
through
6 for
the second
tI VDC.
key
and note that the
digital
voltrrreter
0/l0 VDC
analog output as required.
-65 -
LFE Instruments Drvlsion