Lincoln Electric DC-655 IM602-A, Operator'S Manual, Page: 38 / 49

F-2
DIAGRAMS
F-2
DC-655
N.C.
T
ape up bolted connection if lead #
21
is extended
.
N.D.
C
onnect the control cable ground lead to the frame terminal
marked near the power source terminal strip
.
T
he power
source grounding terminal (marked and located near the power source input power connections) must be properly connected to electrical ground per the power source operating manual
.
N.A.
W
elding cables must be of proper capacity for the current and
A
bove diagram shows electrode connected positive
.
T
o change polarity
,
turn power off
,
reverse the electrode and work leads at the power
NEGATIVE
POSITIVE
32 31 2 4 GND
21
N.A.
N.D.
ELECTRODE
CABLE
TO
WIRE
FEED
UNIT
TO
WORK
POWER
SOURCE
N.E.
O
nly qualified persons should install
,
use or
service this machine
.
D
o not operate with covers removed
.
D
isconnect power source before
servicing
.
D
o not touch electrically live parts
.
CABLE
21
FOR
CONTROL
CABLE
WITH
14
PIN
MS-TYPE
PLUG
CONNECTOR
OR
FOR
CONTROL
CABLE
WITH
TERMINAL
STRIP
LEAD
CONNECTORS
CONTROL
CABLE
S22
977
source and position the switch on wire feeder (if equipped )
to proper polarity
.
A
lso refer to note
N.F.
N.B.
&
N.C.
14-PIN
RECEPTACLE
A B
C
N.E.
I
f using an older
LN-8
control cable: connect lead #7
5
to #7
5
on
terminal strip
,
connect lead #7
6
to #7
6
on terminal strip
,
connect
lead #77 to #77 on the terminal strip
.
the #
21
terminal that matches work polarity
.
T
his connection must be
changed whenever the electrode polarity is changed
.
N.G.
I
f lead #
21
is to be connected to the terminal strip
,
connect to
N.F.
T
he
LN-
9 voltage control jumpers must be connected as follows
(refer to
LN-
9
O
perating
M
anual):
W
hite jumper on voltage board to pin "
S
"
.
B
lue jumper on voltage board (later units only)
,
or on start board (earlier units)
,
to pin "
B
"
.
remote voltage sensing work lead may be ordered for this purpose
.
N.B.
E
xtend lead #
21
from control cable with terminal strip connectors or
from
14-
pin receptacle using #
14
AWG
or larger insulated wire
duty cycle of immediate and future applications
.
C
onnect it directly to the work piece keeping it electrically
convenience
,
this extended #
21
lead should be taped to the
welding work lead
.
(
I
f the length of work lead circuit is
short
,
and connections can be expected to be reliable
,
then
control cable lead #
21
does not need to be extended and can be
directly connected to terminal #
21
on the terminal strip
.
N
ote
that this is not the preferred connection because it adds error
separate from the welding work lead circuit and connection
.
F
or
to the wire feeder voltmeter reading
.
)
physically suitable for the installation
.
A
n
S16586-
[
LENGTH
]
TO
LN-8
OR
LN-
9
CONTROL
N.F.
INPUT
CABLE
PLUG
41
423
1
32
7
5
7
6
77
N.E.
N.G.
21
-
21
+
REMOTE
VOLTAGE
SENSING
LEAD
10-30-
9
8F
N.H.
I
llustration does not necessarily represent actual position of appropriate
output studs
.
R
efer to power source instruction manual for more info
.
N.H.
CONNECTION OF LN-8 OR LN-9 TO THE CV-655, DC-655 OR DC-600 POWER SOURCE
F
or proper setting of switches on power source
,
see power source operating manual
.