Design and function
Matching the cable resistance
099-005320-EW501
22.05.2014
29
5.10
Matching the cable resistance
The resistance value of cables can either be set directly or it can be matched using the power source.
The factory setting of the power sources is 8 m-ohm. This value correponds to a 5 m earth cable, a 1.5 m
intermediate hose package and a 3 m water-cooled welding torch. With other hose package lengths, it is
necessary to carry out a +/- voltage correction to optimise welding properties. The voltage correction
value can be set close to zero by means of re-matching the cable resistance. It is recommended to match
the electric cable resistance after replacing accessories such as torches or intermediate hose packages.
In case a second wire feeder is used the (rL2) parameter has to be adjusted. For all other configurations it
is sufficient to match the (rL1) parameter.
2
3
4
1
+
l
0
50mm
l
0
B
A
Figure 5-9
