Miller Electric OM-494 manual Place optional Polarity switch in Re

5-13. Making Dual Operator CC And CV Weld Connections w/ Common Work Cable

Tools Needed:

3/4 in

YINADEQUATE 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 5-15for proper cable size).

Direct Current	Electrode Positive
(DCEP) connections are shown.
Welder A (Left) Side	Welder B (Right) Side

Note position

of Process

Selector switches.

Note position of	1	5
optional Polarity
switch.
		2
3	4

YStop engine.

YDo 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 5-15for proper cable size).

.Use Dual Operator mode for CC and CV welding (see Section 6-1).

1 Strain Reliefs

Route cables through strain reliefs.

2Electrode Holder Cable

3Wire Feeder Cable

4Work Jumper Cable

5Common Work Cable

OM-494 Page 24

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.

Ref. 190 377 / 802 292-A

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.