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4�5 Pulse Settings Menu
The welding current, particularly on thin sheets, can lead to the weld bath dripping downwards if the current is high,
or ineffective melting if the current is low. The TIG
Pulse
function is useful in such cases.
The TIG
Pulse
function can be used to quickly melt small sections of the weld spot, which re-set just as quickly. The
TIG-Pulse function is used for welding thin sheets. This function works automatically in conjunction with cold wire
motor Item 1649 for applications with power sources /80.
To access the Pulsed TIG parameters, select pushbutton
N – Fig� 4,
or select
Menu -> Process Parameters -> Pulse
Turn
B
to parameter to be changed, then press
B
to modify the
parameter.
The current value shown on the right against the dotted line is
the average set current.
Parameter
Min
DEF
Max
UM
Sol�
Duty Cycle
10
50
90
%
1
Pulse level
0
50
100
A
0.1
Pulse frequency
0.1
1.0
2.5 kHz
Hz
0.1 (min)
In pulsed TIG welding, the pulse level parameter performs the task of keeping the arc ignited and sufficiently fluid
between two successive pulses; when the current level is high, the droplet is detached from the filler rod. The pulse
frequency is particularly significant. Increasing the frequency makes the arc more stable and narrower, and penetration
into the workpiece therefore increases. The duty cycle affects weld heat input.
