Miller Electric Miller DU-OP - Manual (Page 27)

OM-494 Page 23
5-13. Making Dual Operator CC And CV Weld Connections w/ Common Work Cable
Ref. 190 377 / 802 292-A
Y Stop engine.
Y Do not exceed machine duty cycle.
.
For common work connection, work
cable must be able to carry combined
weld output of both CC weld output ter-
minals (see Section 5-15 for proper
cable size).
.
Use Dual Operator mode for CC and CV
welding (see Section 6-1).
1 Strain Reliefs
Route cables through strain reliefs.
2
Electrode Holder Cable
3 Wire Feeder Cable
4 Work Jumper Cable
5 Common Work Cable
For Direct Current Electrode Positive
(DCEP), connect common work cable and
work jumper cable to Welder B (right) Nega-
tive (−) terminal. Connect other end of work
jumper cable to Welder A (left) Negative (−)
terminal.
Connect electrode holder cable to either CC
terminal.
Connect wire feeder cable to CV terminal on
other side.
.
Be sure Process Selector switches are
set correctly. See Section 6-3.
For Direct Current Electrode Negative
(DCEN), connect common work cable and
work jumper cable to Welder B (right) CC
terminal. Connect other end of work jumper
cable to Welder A (left) CV terminal.
Connect electrode holder cable to either
Negative (−) terminal, and wire feeder cable
to remaining Negative (−) terminal.
If unit has the Polarity switch option, connect
common work cable and work jumper cable
to Welder B (right) Work receptacle. Con-
nect other end of work jumper cable to Weld-
er A (left) Work receptacle.
Connect electrode holder cable to either
Electrode receptacle.
Connect wire feeder cable to CV receptacle
on other side.
.
Place optional Polarity switch in Re-
verse position when using CV weld re-
ceptacle. There is no CV weld output
when switch is in Straight position.
.
Be sure Process Selector and Polarity
switches are set correctly. See Section
6-3.
Tools Needed:
Welder A (Left) Side
3/4 in
Welder B (Right) Side
Y INADEQUATE CABLE CONNECTIONS can cause serious damage to welding generator and create a hazardous condition.
When making weld connections with a common work cable, connect a weld cable of adequate size between the Negative (−) weld termi-
nals, and connect a single weld cable of adequate size from the Welder B (right) Negative (−) terminal to the workpiece.
When using these connections as a common work terminal, all connections must be of the same polarity.
For a common work cable connection, the work cable must be able to carry the combined weld output of both modules (see Section 5-15
for proper cable size).
1
2
3
4
5
Direct Current Electrode Positive
(DCEP) connections are shown.
Note position
of Process
Selector
switches.
Note position of
optional Polarity
switch.