Voltage Sensing Considerations For Multiple Arc Systems; If Sense Leads Are Not Used; If Sense Leads Are Used - Lincoln Electric POWER WAVE S500 Service Manual

A-12
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 strong-
ly 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.
INSTALLATION

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 volt-
age 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.
FIGURE A.6
DIRECTION
OF TRAVEL
CONNECT ALL
WORK LEADS AT
THE BEGINNING
OF THE WELD.
POWER WAVE ®
CONNECT ALL SENSE
LEADS AT THE END
OF THE WELD.
S500
A-12