Lincoln Electric PIPEFAB Series Operator's Manual page 44

PIPEFAB™ WELDING SYSTEM
If the auto sense lead feature is disabled and remote voltage sensing is enabled but the sense
leads are missing or improperly connected extremely high welding outputs may occur.
GENERAL GUIDELINES FOR VOLTAGE SENSE LEADS
Sense leads should be a�ached as close to the weld as prac�cal, and out of the weld current path when
possible. In extremely sensi�ve applica�ons it may be necessary to route cables that contain the sense
leads away from the electrode and work welding cables.
Voltage sense leads requirements are based on the weld process (See Table A.2).
PROCESS ELECTRODE VOLTAGE SENSING
GMAW
GMAW-P
FCAW
STT [1]
GTAW
SMAW
The electrode voltage sense lead (67) is automa�cally enabled by the weld process, and integral to the
(1)
5 pin ArcLink control cable (K1543-xx).
When a work voltage sense lead (21) is connected the power source will automa�cally switch over to
(2)
using this feedback (if the auto sense feature is enable).
Nega�ve polarity semi-automa�c process opera�on WITHOUT use of a remote work sense lead (21)
(3)
requires the Nega�ve Electrode Polarity a�ribute to be set.
ELECTRODE VOLTAGE SENSING
The remote ELECTRODE sense lead (67) is built into the 5-pin ArcLink control cable and is always
connected to the wire drive feed plate when a wire feeder is present. Enabling or disabling electrode
voltage sensing is applica�on specific, and automa�cally configured by the ac�ve weld mode.
If the auto sense lead feature is disabled and the weld polarity a�ribute is improperly
configured extremely high welding outputs may occur.
TABLE A.2
(1)
67 LEAD REQUIRED
67 LEAD REQUIRED
67 LEAD REQUIRED
67 LEAD REQUIRED
VOLTAGE SENSE AT STUDS
VOLTAGE SENSE AT STUDS
A-29
67 LEAD WORK VOLTAGE SENSING
21 LEAD OPTIONAL
21 LEAD OPTIONAL
21 LEAD OPTIONAL
21 LEAD OPTIONAL
RECOMMENDED FOR CABLES LONGER
VOLTAGE SENSE AT STUDS
VOLTAGE SENSE AT STUDS
INSTALLATION
21 LEAD
(2)
(3)
(3)
(3)
(3)
THAN 75 FT.