Fronius MagicWave 190 Operating Instructions Manual page 89

Slope reduced current
To set the Slope1 reduced current and Slope2 reduced current parameters
Slope1 reduced current
off / 0.01 - 30 s
Factory setting: off
If a time value has been entered for the Slope1 reduced current parameter, the short-term
current reduction or current increase is not abrupt, but rather slow and adapted to the de-
sired current curve.
This reduces negative effects on the weld seam and component, especially for aluminium
applications.
Slope2 reduced current
off / 0.01 - 30 s
Factory setting: off
If a time value has been entered for the Slope2 reduced current parameter, the adaptation
of the reduced current to the welding current is not abrupt, but rather slow and adapted to
the desired current curve.
For example, during a current increase, the weld pool is heated slowly, not abruptly. This
allows the weld pool to outgas and reduces pores during aluminium welding.
Spot welding time
(spot welding mode only)
0.02 - 120 s
Factory setting: 5.0 s
AC frequency
Syn / 40 - 250 Hz
Factory setting: 60 Hz
Syn
Setting for synchronous welding (both-sided, simultaneous welding with 2 power sources)
For synchronous welding, the AC frequency must be set to "Syn" on both power sources.
Synchronous welding is used for thick material thicknesses to achieve a high deposition
rate and to minimise inclusions during welding.
IMPORTANT! Owing to the phasing of the input voltage, in some cases the synchronisa-
tion of the two power sources cannot be carried out properly.
In this case, pull out the mains plug of the power source, turn it through 180°, and plug it
back in again.
Low frequency
soft, wide arc with shallow heat input
High frequency
focused arc with deep heat input
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