Functional characteristics
MMA welding
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Item No.: 099-005073-EWM01
5.4
MMA welding
5.4.1
MMA welding task selection
• Select JOB 251 (MMA welding task).
It is only possible to change the JOB number when no welding current is flowing.
On decompact welding systems, the "JOB list" sticker is located on the inside on the wire feed unit cover;
with compact machines it is on the right-hand power source cover.
Operating
element
Action Result
Display
1 x
Select JOB number input
comes on
m/min
Set the JOB number
The machine adopts the required setting after
approx. 3 seconds
5.4.2
MMA welding current setting
The welding current is normally set using the “Wire speed” rotary dial.
m/min
Welding current is set
The welding current
and voltage change
depending on the
setting
5.4.3
Arcforcing
Operating
element
Action Result
Display
X x
Select arcforcing welding parameter
Press until
DYN
“Dynamic” LED comes on.
-40 to +40
m/min
Arcforcing setting on the "Wire speed/welding
parameters" rotary dial
-40 to +40
5.4.4
Hotstart
The hotstart device improves the ignition of the stick electrodes using an increased ignition current.
a) = Hotstart time
b) = Hotstart current
I =
Welding current
t =
Time
5.4.5
Antistick
Anti-stick prevents the electrode from annealing.
If the electrode sticks in spite of the Arcforce device, the
machine automatically switches over to the minimum
current within about 1 second to prevent the electrode
from overheating. Check the welding current setting
and correct according to the welding task!
