Design and function
MMA welding
70
099-005504-EW501
20.11.2015
5.12.2 Welding task selection
• Select JOB 128 (MMA welding task).
It is only possible to change the JOB number when no welding current is flowing.
Operating
element
Action
Result
Display
1 x
Select JOB number input
Set the JOB number
The machine adopts the required setting after
approx. 3 seconds
5.12.2.1 Welding current setting
The welding current is normally set using the "Wire speed" rotary dial.
Operating
element
Action
Result
Displays
Welding current is set
Setpoint setting
5.12.2.2 Arcforce
Operating
element
Action
Result
Display
Select arcforcing welding parameter
LED for the button is on.
Arcforcing setting for electrode types:
(Setting range -40 to 40)
Negative values
Rutile
Values around zero Basic
Positive values
Cellulose
5.12.2.3 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
Figure 5-38
5.12.2.4 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!
Figure 5-39
