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8�1 MMA DC Process
In section
Q - fig. 4
of the main screen, select
DC
MMA Process main screen
8�2 MMA AC Process
In section
Q - fig. 4
of the main screen, select
AC
In the MMA AC this process, the output current frequency is 50 Hz and the output waveform is square.
8�3 MMA DC/AC process parameters
Description
Min
DEF
Max
UM
Sol�
Hot Start
Improves ignition even when using electrodes with poor ignition
properties
0
50
100
%
1
Arc Force�
0 voltaic arc with little spatter, barely defined
100 voltaic arc with spatter, but stable
0
30
100
%
1
Hot start time�
To be adjusted according to the diameter of the electrode to be
welded.
0
0.15
1
s
0.01
Antistick�
Function that prevents the electrode from bonding to the
workpiece
OFF
ON
-
-
Cut off Voltage�
Arc cut-off voltage Once the set voltage is reached, the arc
is extinguished, avoiding optical flashes and preserving the
electrode for subsequent ignitions.
OFF
70
70
V
1
VRD�
This function reduces power source no-load voltage, required
in environments with a high explosion risk.
ON
OFF
NOTICE
MMA AC
process and
VRD
function not available in 380, 381 power sources
