Fronius TransTig 800 Operating Instructions Manual page 77

The value set for G-H only applies if the maximum welding current actually has
been set. The actual value is derived from the present welding current. For a
medium welding current, for example, the actual value will be half of the value
set for G-H.
IMPORTANT! The values set for the G-L and G-H set-up parameters are added
together. For example, if both welding parameters are set to the maximum (40
s), the gas post-flow will last:
- 40 s at minimum welding current
- 80 s at maximum welding current
- 60 s if the welding current is exactly half the maximum, etc.
If Aut is set, the gas post-flow time G-H is calculated automatically.
t
G-H
(1)
G-L
(2)
I
min
Gas post-flow time as a function of the welding current
GPU
Gas purger - protective gas shield purging
Unit
Setting range
Factory setting
Purging of the protective gas shield begins as soon as GPU is allocated a value.
For safety reasons, purging of the protective gas shield cannot be restarted un-
til a new GPU value is entered.
IMPORTANT! Purging of the protective gas shield is necessary if condensation
forms when the device is left unused in a cold environment for a prolonged
period. Long hosepacks are most affected.
Legend:
(1)....
(2)....
I
I
max
min
OFF / 0.1 - 10.0
OFF
Gas post-flow time at any given
moment
Welding current at any given
moment
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