Kemppi Pulse TCS - Manual (Page 31)

EN
4.2 HOW DOES IT WORK?
In tandem welding, there is a leading arc that controls the weld penetration, while the trailing
arc affects the weld bead appearance. Both filler wires contribute to the common weld pool,
but they are independently controlled by their respective power sources. It is also possible to
use the tandem equipment to perform 1-wire welding.
4.3 THE FOUR OPERATION MODES
There are four different operation mode combinations available in KempArc Pulse TCS
system.
Pulsed + Pulsed
Both leading and trailing arcs operate in a pulsed mode, controlled by the Kemppi Tandem
Control System so that the peak of each pulse occurs in the background of the other arc. This
is the most commonly used operation mode.
Pulsed + Standard
The leading arc operates in pulsed mode, while trailing arc is constant voltage. This helps to
achieve maximum welding speed and gap bridging.
Standard + Pulsed
The leading arc is in constant voltage mode to maximize the penetration and travel speed,
while the trailing arc is in pulse mode to reduce heat input and to cool the weld pool. This
mode provides the deepest penetration.
Standard + Standard
Both leading and trailing arcs operate in constant voltage mode. This mode is mainly used
in 1-wire welding, where the active wire is switched when welding direction changes. This
reduces the cycle time.
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ulse
TCS / © Kemppi O
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