Lincoln Electric IM850 POWER FEED 10S - Manual (Page 15)

A-5 INSTALLATION
POWER FEED 10S
A-5
WELDING WITH MULTIPLE ARCS
Special care must be taken when more than one arc
is welding simultaneously on a single part. Arc blow
and arc interference may occur or be magnified. Each
power source requires a work lead from the work stud
to the welding fixture. Do not combine all of the work
leads into one lead. Always weld in a direction away
from the work leads. Connect all of the work sense
leads from each power source to the work piece at the
end of the weld, such that they are out of the path of
the weld current.
For the best results when pulse welding, set the wire
size and wire feed speed the same for all the arcs.
When these parameters are identical, the pulsing fre-
quency will be the same, helping to stabilize the arcs.
If the voltage sensing is enabled but the sense
leads are missing, improperly connected, or if the
electrode polarity switch is improperly configured
extremely high welding outputs may occur.
In extremely sensitive applications requiring voltage
sense leads, it may be necessary to route cables that
contain the sense leads away from the electrode and
work welding cables. For more information regarding
the placement of voltage sense leads, see the section
entitled "Welding with Multiple Independent Power
Waves."
CONNECT ALL SENSE
LEADS AT THE END
OF THE WELD
CONNECT ALL
WORK LEADS AT
THE BEGINNING OF
THE WELD
DIRECTION
OF TRAVEL
POWER SOURCE
POWER SOURCE
FIGURE A.4