Fronius RCU 5000i, Operating Instructions & Spare Parts

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109
EN
Parameters of standard characteristics
Ignition Feeder creep speed
Wire feed speed [m/min] before welding begins (0 - currently set wire feed speed)
Ignition current
Strength of ignition current [A] set when welding begins. The ignition current depends on
the filler metal and wire diameter.
-
In the case of low ignition current, the welding wire is not sufficiently preheated or
burned
- In the case of high ignition current, the filler wire is excessively preheated or burned
Arc (static) Wire feed speed
The wire feed speed [m/min] regulated via a pulse generator guarantees a controlled
speed value on the feed rollers.
Effects of an excessively high wire feed speed:
-
arc too short
- The wire electrode is not sufficiently melted - heavy spatter due to wire electrode pen-
etrating the welding material
Effects of an excessively low wirefeed speed:
-
arc too long
- scoring may appear around the weld seam
- Welding wire may weld fast to the contact tip
Base current
Even at low currents, the base current [A] guarantees a stable arc in the dip transfer arc
burning phase.
Effects of an excessively high base current:
-
wire electrode welded on too hard
- large drops form
Effects of an excessively low base current:
-
ionisation of the arc section too low
- arc breaks in the base current phase
Voltage command value
This parameter gives the voltage command value in [V] for the arc.
Effects of excessively high voltage:
-
arc too long
- scoring may appear around the weld seam
- wire electrode may weld fast to the contact tube
- low short-circuit frequency
Ignition current time
The length of time [ms] that the set ignition current is active when welding begins
0
= no ignition current
40 = max. duration for ignition current