Fronius Acerios, Operating Instructions Manual

Page: 45 / 84

Special Functions and Options
Arc Break Monit-
oring Function If the arc breaks and no current flow takes place during the time set in the Setup
menu, the plasma power source automatically switches off. The control panel
displays the service code "no | Arc".
Press any button on the control panel to resume the plasma process.
The "2nd Level Setup Menu" section describing how to set the arc break monitor-
ing (Arc) setup parameters begins on page
58 .
Ignition Time-
Out Function The plasma power source has an ignition time-out function.
If the plasma process is started, gas pre-flow begins immediately. Then the igni-
tion procedure is initiated. If no plasma arc emerges during the period of time set
in the Setup menu, the plasma power source automatically switches off. The con-
trol panel displays the service code "no | IGn".
The "2nd Level Setup Menu" section describes how to set the ignition time-out
function (ito) parameter.
Plasma Pulsing The current set at the start of a plasma surface treatment may not always be op-
timum for the entire plasma process.
If the amperage is too low, this can reduce the effect of the plasma arc.
If the amperage is too high, this can cause distortion in thin-walled components.
Low treatment distances and treatment speeds can cause thermal damage to
components.
With plasma pulsing (plasma process with a pulse current), a low base current I-
G rises steeply to the significantly higher pulse current I
main
and drops back to
the base current I-G after the set dcY (duty cycle) time.
Higher pulse frequencies are generally used in automated applications and
mainly serve to stabilize the plasma arc.
Plasma pulsing allows the heat input to be tailored to each component and re-
stricted, if necessary, to achieve the best-possible results.
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