Whit a constant current control unit it is possible to directly set the current value to be used for carrying out the welding process. During the welding process the control unit measures the welding current value, and, on the basis of a correcting mathematical algorithm, it maintains the set current.

This operating mode, besides simplifying the programming, enables to keep the desired welding current even in case of variations of factors such as: mains voltage, welding circuit impedance, status of the welding tools, superficial status of the materials in progress.

ccoff

Welding current (2) variation in comparison with the mains voltage (1) variation under standard operating mode.

ccon

Welding current (2) variation in comparison with the mains voltage (1) variation under constant current operating mode.