Fronius TransTig 2200 Operating Instructions Manual page 84

Characteristics that can be selected using the ELn function
"con" parameter (constant welding current)
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-
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Parameter "0.1 - 20" (drooping characteristic with adjustable slope)
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"P" parameter (constant welding power)
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84
U (V)
(4)
(6)
(5)
(7)
0 100 200 300
If the "con" parameter is set, the welding current will be kept constant, irrespective of
the welding voltage. This results in a vertical characteristic (4).
The "con" parameter is especially suitable for rutile electrodes and basic electrodes,
as well as for arc air gouging.
For arc air gouging, set the arc-force dynamic to "100".
Parameter "0.1 - 20" is used to set a drooping characteristic (5). The setting range ex-
tends from 0.1 A / V (very steep) to 20 A / V (very flat).
Setting a flat characteristic (5) is only advisable for cellulose electrodes.
NOTE! When setting a flat characteristic (5), set the arc-force dynamic to a higher
value.
If the "P" parameter is set, the welding power is kept constant, irrespective of the weld-
ing voltage and welding current. This results in a hyperbolic characteristic (6).
The "P" parameter is particularly suitable for cellulose electrodes.
NOTE! If there are problems with a rod electrode tending to "stick", set the arc-
force dynamic to a higher value.
(1) Load line for rod electrode
(2) Load line for rod electrode where arc length is in-
con - 20 A / V
creased
(3) Load line for rod electrode where arc length is re-
(2)
duced
(1)
(4) Characteristic where "CON" parameter is select-
(3)
ed (constant welding current)
(5) Characteristic where "0.1 - 20" parameter is se-
(8)
lected (drooping characteristic with adjustable
slope)
(6) Characteristic where "P" parameter is selected
4 0 0 I (A)
(constant welding power)
(7) Example of pre-set arc-force dynamic where
characteristic (4) is selected
(8) Example of pre-set arc-force dynamic where
characteristic (5) or (6) is selected