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4.9 Arc measurement
The welding system supports precise arc voltage, current, and power measurement for
specific processes. Using this feature makes it unnecessary to concern about voltage losses
in the welding cables. Measurement requires dedicated cables from the power source to
the wire feeder (included in the interconnection cable set) and from the wire feeder to the
workpiece (a separate cable with a clamp, included in the delivery). See Figure 4.30, "Arc
measurement system" for details.
Fieldbus
4
3
Figure 4.30: Arc measurement system
1.
Earth cable: Cable and clamp for workpiece
2.
Positive pole: Connection inside wire feeder
3.
Arc measurement cable in the interconnection cable set
4.
Setup and monitoring in setup panel and web user interface
1
2
52
© Kemppi Oy 2017
4.9.1 Setup and calibration
For the arc measurement setup and calibration, refer to the
guide.
4.9.2 Display
The arc voltage, current, and power can be displayed in the setup panel and in the web
user interface. The setup panel displays a dot after the voltage value to indicate that the
value is measured directly from the arc. In the weld data the text "AVol" is displayed for the
same determination. In the web user interface, the arc values are displayed on the
display
page.
In order to display the values, the arc measurement has to be switched on by the means
of the following instructions.
Setup panel
Go to the
Main menu > System config
turn the control knob on it to change the feature on. Press the
changes.
Web user interface
Go to the
Welding settings > Welding system > General settings
on by clicking the corresponding button. A pop-up bar with
buttons will appear at the bottom. Press the
A7 MIG Welder
A7 MIG Welder Integration
menu, navigate to the
ArcVoltage
parameter and
Save
button to save the
and select the
Arc voltage
Save
and
Reset changes
Save
button in the dialog to save the settings.
Welding
1735
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