Fronius Acerios, Operating Instructions Manual

Page: 63 / 84

The Gas Menu
General The gas menu gives easy access to the gas settings.
Accessing the
Gas Menu
1
Press and hold the store button
2 Press the gas-test button
The power source in now located in the gas menu; the last selected paramet-
er is displayed.
Adjusting Para-
meters
1
Use the left or right parameter selection button to select the parameter to
adjust
2
Use the selection dial to change the parameter value
Parameters in
the Gas Menu
GPr Gas pre-flow time
0.0 - 9.9 s
Factory setting: 0.4 s
G-L Gas post-flow time increase at minimum process current
0 - 25 s
Factory setting: 5 s
G-H Gas post-flow time increase at maximum process current
0 - 40 s / Aut
Factory setting: Aut
The setting for G-H only applies if the maximum process current is actu-
ally set. The actual value results from the process current at that mo-
ment. With a medium process current, the actual value is half the setting
for G-H, for example.
IMPORTANT! The settings for setup parameters G-L and G-H are added
together. For example, if both parameters are at their maximum (25 s / 40
s), the gas post-flow time lasts for
25 s at minimum process current
65 s at maximum process current
45 s if the process current is exactly halfway between the minimum and
maximum current values.
In the Aut setting, the gas post-flow time G-H is calculated automatically.
Gas post-flow time subject to the process current:
I min I max
I
t
G-H
G-L
(1)
(2)
(1) = present gas post-flow time, (2) = present process current,
G-H = post-flow at I
max
, G-L = post-flow at I
min
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EN-US