Remote Sence Lead Connections - Lincoln Electric POWER WAVE STT Operator's Manual

POWER WAVE ® STT ® MODULE
REMOTE SENSE LEAD CONNECTIONS
Voltage Sensing Overview
The STT welding process requires the use of remote voltage
®
sense leads to more accurately monitor the conditions of the arc.
These leads originate in the power source, and are connected
and configured external to the STT
source instruction manual for detailed information.
Note:
Other processes run through the STT
require sense leads, but will benefit from their use. Consult the
power source instruction manual for recommendations.
General Voltage Sensing Considerations for Multiple Arc
Systems
Special care must be taken when more than one arc is welding
simultaneously on a single part. The placement and configura-
tion of remote work voltage sense leads is critical to the proper
operation of multiple arc STT
®
Module. Consult the power
®
Module do not necessarily
®
applications.
RECOMMENDATIONS:
• Position the sense leads out of the path of the weld cur-
rent. Especially any current paths common to adjacent arcs.
Current from adjacent arcs can induce voltage into each oth-
ers 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.4)
FIGURE A.4
A-5
INSTALLATION