ESAB Caddy A32, Инструкция по эксплуатации, Страница: 10 / 16

3 TIG WELDING
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Hot Wire TIG
This function uses the power source to pre-heat a wire fed to an existing TIG melt. This
results in a higher rate of production and also a better welding result than what is the case if
a cold wire is fed to the melt.
Having turned on the Hot Wire TIG function using the " h " parameter, the functionality is as
follows. If a trigger signal is generated or the " S " parameter (see below) is set to "1",
pre-heating will start and Hot Wire TIG will be indicated by a flashing TIG indicator.
If the voltage reaches a certain limit, an arc is considered to have formed and the power
source will try to put it out. This because the purpose of Hot Wire TIG is
not to keep an arc
lit but to maintain a constant current aiming to heat the wire. You can set the voltage limit,
using the "
U " parameter (see above).
In a system without a trigger signal, the " S " parameter can be used to automatically start
pre-heating.
WARNING!
When the " S " parameter is in position "1", there is a constant voltage on the
welding outlet. This is indicated by a flashing VRD indicator.