LFE 2000 Series - Page 35

1.3
958-l
I
REV
Remove
the
Input/Output
(I/0)
board
frorn
the
e
Sectron
1.10
and,
using
kit
lg2l-121.
make
brackets.
)
MODIFICATIqN
J&OI','-!!€RMOC0UPLE
INPIJT
TO
lOOQ
PLAI
lNUM
RTD IIIPIIT
RESOI,UTION
-
I
ectronic
assembly per
lnstruction
the
fol lowing
changes. r
LFE P/N's
WITH
0.1
DEGREE
1n
l-n
I
)
1
4.
f
7
q
10
REMOVE
R3,R5
REPLACE
resistor
R6 with
23.zk-O.tZ
(,1855_2322)
.
REPLACE
R7
with
lk-0.
t%
(1855-ti)
REPLACE
resistor
Rl6 wirh
l0k_17"
(1849_t4).
REPLACE
capacirors
C3,C27
&
C2g wlth
4.7UF-50V
(105_340).
REPLACE
resistor
Rl8
with
5,23k-1%
(
1849-523
I
)
for
Modets
2014 and
2075
on1y.
REPLACE
resistor
Rl
t)n
the
smalI
slrdewire
adcler
pCB
wtth
5.Tk-lZ
(
1849-5211
)
for
Models
2014
and
2015
orrty.
OPEN
.J26
foi
l bridge
(on
component
side).
ADD
small
constant
current
pcB
(
165
I
-l97l
)
per
Figure
l-l
below.
REPLACE
choke
L3
in
input
circr-tj
t on
1650-417A
(437A
rs screenecl
on
componerrt
s'ide
under
VR.3
)
wtth
jumper (
lgl5-106),
Thrs does
not appl
y
to
boards
1650-41 5
(arry
revrsion)
except
to
sone
1650-415E
boards
(415E
in
f
or
I on
so lder
side
unde
r VR3
)
wh
ich
have trer:n
reworked
to
arict
Ll
.
REMOVE
the
Cold
.Iunctiorr
Compensatcrr
Resjstor
assembly
frorrr
the
rear
ter-mrnals
of
the
control
ler case
(
ternrn;rl
s F
& G)
f or older
control
lers
or
remove
the
compensating
resrstor
(cr.IC1)
anri
its
support
f rorn
the
I/o
board
of
newer
contr'ollers.
BUSS
WIRE
T'NDERSIDE
TO
t/O,RI,R3
JUNCTION
TO
rlo
A2]^
MOT]NT
ITEH
2
I^IITH
COMPONENT
SIDE
UP
AS
INDI(ATED.
8u$
!! rQ!
/
11.
Frgure
3-l
LFE
Instruments
Drvision
MOUNTING
OF
CONSTANT
CURRENT
ADDER PCB
-28-