Miller Electric OM-494 manual Stop engine Do not exceed machine duty cycle

5-9. Making Dual Operator Mode CC 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.

1

4

2 2

3

Ref. 190 377 / 802 292-A

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 Relief

Route cables through strain reliefs.

2Electrode Holder Cables

3Work Jumper Cable

4 Common Work Cable

For Stick/TIG welding Direct Current Elec- trode Positive (DCEP), connect common work cable and work jumper cable to Weld- er B (right) Negative (−) terminal. Connect other end of work jumper cable to Welder A (left) Negative (−) terminal.

Connect electrode holder cables to CC ter- minals.

For Stick/TIG 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) CC ter- minal.

Connect electrode holder cables to Nega- tive (−) terminals.

If unit has the Polarity switch option, con- nect common work cable and work jumper cable to Welder B (right) Work receptacle. Connect other end of work jumper cable to Welder A (left) Work receptacle.

Connect electrode holder cables to Elec- trode receptacles.

.Be sure Process Selector switches

and optional Polarity switches are set correctly. See Section 6-3.

OM-494 Page 20