EWM TETRIX 300 AC/DC COMFORT activArc, Руководство по эксплуатации

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Design and function
Protecting welding parameters from unauthorised access
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099-000120-EW501
26.07.2011
5.7.4 Switching the welding current polarity
This function can be used to reverse the welding current polarity electronically.
For example, when welding with different electrode types for which different polarities are stipulated by
the manufacturer, the welding current polarity can be switched easily on the control.
Operating
element Action Result
n x
Select welding current polarity welding parameter:
Position :
"-" polarity on connection socket, welding current "-"
"+" polarity on connection socket, welding current "+"
Position :
"+" polarity on connection socket, welding current "-"
"-" polarity on connection socket, welding current "+"
5.7.5 Arcforce
Shortly before the electrode threatens to stick, the arcforcing device sets an increased current designed
to prevent the electrode sticking.
Operating
element Action Result Displays
1 x
Select arcforcing welding parameter
The signal light lights up in red
Set arcforcing
-40
= low current increase > soft arc
0 = default setting
+40 = high current increase > aggressive arc
5.7.6 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 5-24
5.8 Protecting welding parameters from unauthorised access
NOTE
These accessory components can be retrofitted as an option, see Accessories chapter.
To protect against unauthorised or unintentional adjustment of the welding parameters on the machine,
the control input can be locked with the aid of a key switch.
Key position 1 = All parameters can be set
Key position 0 = The following operating elements/functions cannot be changed:
• "Welding process" button
• "Welding current polarity" button
• Parameter values in the function sequence can be displayed but not
changed