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Fronius VR 4000 Instructions D'installation page 18

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To change a parameter:
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Parameters listed in alphabetical order
Sheet thickness
Setting the sheet thickness in mm or in. (only for MIG/MAG pulse synergic welding and
MIG/MAG standard synergic welding)
When setting the sheet thickness, the welding current, sheet thickness and welding volt-
age parameters are also automatically set.
Wire feed speed
Setting the wire feed speed in m/min or ipm.
When setting the wire feed speed during Synergic operation, the welding current, sheet
thickness and welding voltage parameters are also automatically set.
Job No.
Retrieval of saved parameter records/job numbers
Arc length correction
correction of the arc length
- .... reduced arc length
0 ... neutral arc length
+ ... increased arc length
a-dimension
Setting the a-dimension is only possible on power sources with the Comfort control panel.
The wire feed speed, welding current and welding voltage parameters are calculated and
set depending on the set welding speed.
Before selecting the a-dimension, the welding speed parameter must be set.
Welding speed
Setting the welding speed (only on power sources with Comfort control panel).
Recommended welding speed in manual welding mode: approx. 35 cm/min (13.78 ipm)
Welding voltage
Setting the welding voltage
Before the start of welding, the device automatically displays a standard value based on
the programmed parameters. During welding, the actual value is displayed.
When setting the welding voltage during Synergic operation, the welding current, sheet
thickness and wire feed speed parameters are also automatically set.
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Select the relevant parameter using the "Parameter selection" button (6) or (14):
the parameter value then appears on the digital display
Change the welding parameter value using the adjusting dial

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