Functional characteristics
MMA welding
Item No.: 099-004833-EWM01
77
5.4
MMA welding
5.4.1
MMA welding task selection
Control element Action
Result
Display
X x
The various welding processes are run through
until the signal light for the required welding
process comes on.
The nominal values
for the welding
current and welding
voltage are
displayed.
5.4.2
MMA welding current setting
The welding current is always set using the rotary dial “Wire speed” on a wire feed control or using the
R40 remote control.
Welding current is set
Welding current is
displayed
5.4.2.1
Setting using the stick electrode diameter
The welding current can also be set using the stick electrode diameter:
The welder sets the stick electrode diameter being used and the control calculates the relevant welding
current for the electrode.
1 x
Switch to
stick
electrode
diameter
Current stick
electrode diameter
is displayed
Stick electrode diameter being used is set
Stick electrode
diameter is
displayed
5.4.3
MMA welding data display
To the left and right of the LCD display on the control there are 2 “arrow keys” on each side for selecting
the welding parameter to be displayed. The
button is used to scroll through the parameters from the
bottom upwards and the
button is used to scroll downwards from the top.
As soon as changes have been made to the settings after welding (display on hold values), the display
switches back to the nominal values.
Figure 5-37
Four welding parameters can be selected in the MMA welding process:
Welding current and electrode diameter (left-hand side) and welding voltage and JOB no. (right-hand
side).
The parameters can be displayed before (nominal values), during (actual values) welding.
Parameter Before
welding
(nominal values)
During welding
(actual values)
Welding current
z
z
Electrode diameter
(material thickness)
z
Welding voltage
z
z
JOB No.
z
Running time meter
z