EWM alpha Q 352 puls MM Operating Instructions Manual page 35

1 Preparation
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Switch off the welding machine.
•
Unscrew the gas nozzle of the welding torch.
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Cut off the welding wire to be flush with the contact tip.
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Retract the welding wire a bit (approx. 50 mm) on the wire feeder. Now there should be no more
welding wire in the contact tip.
2 Configuration
•
Switch on the welding machine
•
At the machine control, turn the key switch to the "1" position.
•
Press the "Mode" push-button until the "Cable Resistance" parameter is shown on the machine control
display.
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Confirm the parameter by the" Enter" push-button.
•
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 performed. To do
so, switch the wire feeder using the appropriate interface.
3 Alignment/measurement
•
Place the welding torch contact tip on a cleansed part of the workpiece with light pressure and press
the inching button at the torch or wire feeder for approx. 2 seconds; this function can also be selected
via the interface. Short-circuit current flows briefly, which is used to determine and display the cable
resistance. The value can be between 0 mΩ and 40 mΩ . The new value is immediately saved without
requiring any further confirmation. If "no Con." is shown on the display, measurement failed. The
measurement must be repeated.
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.
099-005366-EW501
31.07.2014
Design and function
Matching the cable resistance
35