Lincoln Electric POWER WAVE S500 CE Operator's Manual page 8

Table 1
#1 – Power source 1 ;
#2 – Power source 2 ;
WORK #1 – Work lead of power source 1 ;
WORK #2 – Work lead of power source 2 ;
CF – Current flow
ARC #1
ARC #2
#1
ARC #1
WORK #1
SENSE #1
ARC #1
SENSE #1
SENSE #2
English
WORK #1
SENSE #1
CF
WORK #2
SENSE #2
WORK #2
ARC #2
SENSE #2
WORK #1
WORK #2
ARC #2
LEGEND
SENSE #1 – Sense lead of power source 1
SENSE #2 – Sense lead of power source 2
ARC #1 – Welding gun of power source 1
ARC #2 – Welding gun of power source 2
#1



#2
#2



#1




#2
5
BAD
Current flow from ARC #1 affects
sense lead #2.
Current flow from ARC #2 affects
sense lead #1.
Neither sense lead picks up the
correct work voltage, causing
starting and welding arc instability.
BETTER
Sense lead #1 is only affected by
current flow from ARC #1.
Sense lead #2 is only affected by
current flow from ARC #2.
Due to voltage drops across the
workpiece arc voltage may be low,
causing need for deviation from
standard procedures.
BEST
Both sense leads are out of the
current paths.
Both sense leads detect arc voltage
accurately.
No voltage drop between arc and
sense lead.
Best starts, best arcs, most reliable
results.
English