Operating the machine control
Machine configuration (system)
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099-00L105-EW501
07.06.2019
5.4.7 Aligning the cable resistance
The resistance value of cables can either be set directly or it can be aligned using the power source. The
factory setting of the power sources is 8 mΩ. This value correponds to a 5 m earth cable, a 1.5 m inter-
mediate hose package and a 3 m water-cooled welding torch. With other hose package lengths, it is ne-
cessary to carry out a +/- voltage correction to optimise welding properties. The voltage correction value
can be set close to zero by means of realigning the cable resistance. It is recommended to align 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 aligned. For all other configurations it
is sufficient to align the (rL1) parameter.
1 Preparation
• Switch off the welding machine.
• Unscrew the gas nozzle from the welding torch.
• Trim the welding wire so that it is flush with the contact tip.
• Pull the welding wire back a little (about 50 mm) on the wire feeder (by pressing button B - wire re-
turn). There should be no more welding wire in the contact tip at this point.
2 Configuration
• Switch on the welding machine
• Press the "System" push-button.
• Select the "Cable resistance alignment" parameter using the main control button. Parameter RL1 must
be aligned for all machine combinations. In case of welding systems with a second power circuit – if
two wire feeders are to be operated from a single power source, for example – a second alignment
with parameter RL2 must be made. To activate the required wire feeder for measurement, briefly acti-
vate (tap) the torch trigger of this machine.
3 Alignment / Measurement
• Press the "D" push-button.
• Place the welding torch with the contact tip on a clean spot of the workpiece with a little pressure and
press the torch trigger for approx. 2 seconds. A short-circuit current will flow briefly, which is used to
determine and display the cable resistance. The value can be between 0 mΩ and 40 mΩ. The new va-
lue is immediately saved without requiring further confirmation. If no value is shown on the display,
then the measurement failed. The measurement must be repeated.
• Press the "A" push-button after successful measurement.
4 Restoring welding standby mode
• Switch off the welding machine.
• Screw the gas nozzle onto the welding torch.
• Switch on the welding machine.
• Insert the welding wire again.
