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WELDING WITH RUBBERED ELECTRODE (MMA MODE)
CONNECTIONS AND RECOMMENDATIONS
• Connect the cables, electrode holder and earth clamp in the connectors,
• Respect the welding polarities and intensities indicated on the electrodes boxes,
• Remove the electrode from the electrode holder when the machine is not in use.
Adjustable values
MMA Pulse
This MMA Pulse welding mode is suitable for applications in the vertical up position (PF). The pulse mode keeps the weld pool cold and eases the
transfer of matter. Without the pulse mode, vertical-up welding requires a difficult «Christmas tree» shape triangular movement. With the MMA Pulsed
mode, this movement is no longer required and a simple straight up movement is enough (depending on the thickness of the workpiece). If you wish
to widen your weld pool, a simple lateral movement is enough (similar to standard welding). This process allows greater control during vertical-up
welding.
The pulse frequency is adjusted by pressing and releasing the «F(Hz)» button and then activating the main incremental encoder. Frequency value
increases when the incremental encoder is operated clockwise and decreases when it is operated anti-clockwise. Once the setting has been made, it
is possible to re-press and release the «F(Hz)» button to re-link the main incremental encoder to the current setting or to wait 2 seconds.
This frequency ranges from 0.4Hz to 20Hz in Pulse MMA. The incrementation step depends on the frequency range:
Pulse frequency (Hz)
0.4 Hz - 3 Hz
3 Hz - 20 Hz
MMA - Advanced menu
Antisticking can be turned on or off, Hotstart time can be set in MMA and cold current settings in Pulse MMA.
T_HOTSTART
%I_Froid
%T_PULSE
Parameter
Switching off the current source in case of a prolonged short-circuit (2sec) of the
Antisticking (ASt)
electrode on the workpiece and facilitating the electrode lift-off.
T_Hotstart (HSt)
Hotstart time value in seconds
Value of the cold current as a percentage of the hot current (I) (access only in
%I_froid (Ico)
pulsed MMA)
%T_Pulse (dcY)
Time balance of hot current (I) of pulsation (access only in Pulse MMA)
The setting to modify can be selected by pressing the
the
button. The advanced settings menu can be exited with «ESC».
PROTIG 161 DC
F
(Hz)
TIG - HF
2T
TIG - Lift
4T
MMA
4T
LOG
MMA (MMA PULSE)
The grey areas are not useful for this mode.
0 - 100% (40% by default)
Incremental steps (Hz)
0.1 Hz
1 Hz
These advanced settings can be accessed by pressing the
SET and UP are displayed.
Once the button is released
and confirm by pressing the
Description
button. Once the modification is set with the main knob (I), it can be confirmed by pressing
A
V
JOB
s Hz
%
SETUP Press 3"
%
Pulse
Spot
MMA Pulse
-10 / +10 (indexed)
, use the knob to select «SET» from the dropdown menu
button.
EN
during 3 seconds until
Setting
ON-OFF (Default ON)
0s - 2sec (0.4sec by default)
20% - 80% (30% by default)
20% - 80% (50% by default)
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