Operation Manual

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A7 MIG Welder© Kemppi Oy 2018 1824
OPERATING MANUAL
4.10 Gas flow sensor
The welding system is equipped with a gas ow sensor that is located inside the wire feeder.
The sensor is capable of sensing gas ow for any mixture of six base gases containing
Argon (Ar), Carbon dioxide (CO₂), Nitrogen (N₂), Hydrogen (H₂), Oxygen (O₂) and Helium
(He). The gas ow sensor provides both ow indication and ow rate outputs. The outputs
can be monitored in the web user interface and in a robot pendant through the digital
robot interface.
These instructions and specications apply to a gas ow sensor unit that is a bus-
controlled standalone device inside the wire feeder. They do not apply to an integrated gas
ow sensor that uses wire feeder hardware. To check the type of the gas sensor in use, go to
setup panel’s Main menu > System cong menu > Device information and navigate through
the list. The standalone gas ow sensor device appears in the list as “Gas sensor unit”. If that
entry does not exist, the system uses the integrated gas ow sensor.
They do not apply to an integrated gas ow sensor that uses wire feeder hardware. To
check the type of the gas sensor in use, go to setup panel’s Main menu > System cong
menu > Device information and navigate through the list. The standalone gas ow sensor
device appears in the list as “Gas sensor unit”. If that entry does not exist, the system uses
the integrated gas ow sensor.
4.10.1 On/Off control
The gas ow sensor can be turned on and o. By default, it is o. When turned on, ow rate
and status are monitored in web user interface’s welding display.
Setup panel
Go to the Main menu > System cong menu > Gas sensor menu, navigate to the Enabled
parameter and turn the control knob on it to change the gas ow sensor on or o. Press
the Save button to save the changes.
Web user interface
Go to the Welding settings > Welding system > Gas sensor settings and select the Gas
sensor on or o by clicking the corresponding button. A pop-up bar with Save and Reset
changes buttons will appear at the bottom. Press the Save button in the dialog to save
the settings.
4.10.2 Gas flow sensing level
The welding system can indicate ow rate below sensing level. This feature is enabled
when the gas ow sensor has been turned on, the gas ow sensing level has been set to
greater than zero, and gas is owing by the means of manual control, or during welding.
The indication is reported 3 seconds after the gas valve has been opened. The status is
monitored in the welding display of the web user interface, and is passed to the robot via
the digital robot interface as the GasFlowOk signal.
Setup panel
Go to the Main menu > System cong menu > Gas sensor menu, navigate to the Level
parameter and turn the control knob on it to change the gas ow sensing level. Press the
Save button to save the changes.
Web user interface
Go to the Welding settings > Welding system > Gas sensor settings and adjust the Gas ow
sensing level parameter by using the slider, or by clicking on the value and typing a new
value. A pop-up bar with Save and Reset changes buttons will appear at the bottom. Press
the Save button in the dialog to save the settings.