VOLTAGE SENSING CONSIDERATIONS FOR
MULTIPLE ARC SYSTEMS
Special care must be taken when more than one arc is welding
simultaneously on a single part. Multiple arc applications do not
necessarily dictate the use of remote work voltage sense leads,
but they are strongly recommended.
If Sense Leads ARE NOT Used:
• Avoid common current paths. Current from adjacent arcs can
induce voltage into each others current paths that can be
misinterpreted by the power sources, and result in arc
interference.
If Sense Leads ARE Used:
• Position the sense leads out of the path of the weld current.
Especially any current paths common to adjacent arcs.
Current from adjacent arcs can induce voltage into each
others current paths that can be misinterpreted by the power
sources, and result in arc interference.
• For longitudinal applications, connect all work leads at one
end of the weldment, and all of the work voltage sense leads
at the opposite end of the weldment. Perform welding in the
direction away from the work leads and toward the sense
leads.
(See
Figure A.6
)
Direction
of Travel
Connect all
Work Leads at
the Beginning
of the Weld
Connect all Sense
Leads at the End
of the Weld
FIGURE A.6
A-10
INSTALLATION
POWER WAVE
®
S350 & S350 ALUMINUM
