Fronius TransSteel 2200 Operating Instructions Manual page 80

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Final current phase: to prevent crater cracks or shrink holes
Reduced current phase: intermediate lowering of the welding current in order to
prevent any local overheating of the parent material
Starting current duration
UpSlope phase: the welding current is continually increased
Duration: 0.5 seconds
Final current duration
DownSlope phase: the welding current is continuously reduced
Duration: 0.5 seconds