Tweco 185TSW DC CC - Manual (Page 27)

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Parameter Description
SPOT TIME This parameter sets the duration of the SPOT TIME in HF TIG mode only
PULSE WIDTH This parameter sets the percentage on time of the PULSE FREQUENCY
for PEAK weld current when the PULSE is on.
PULSE FREQ. This parameter sets the PULSE FREQUENCY when the PULSE is on.
AC FREQUENCY This parameter operates in AC mode only and is used to set the frequency
for the AC weld current.
WAVE BALANCE This parameter is used for aluminum AC TIG mode and is used to set the
penetration to cleaning action ratio for the AC weld current. Generally
WAVE BALANCE is set to 50% for AC STICK welding. The WAVE
BALANCE control changes the ratio of penetration to cleaning action of
the AC TIG welding arc. Maximum weld penetration is achieved when
the WAVE BALANCE control is set to 10%. Maximum cleaning of
heavily oxidised aluminium or magnesium alloys is achieved when the
WAVE BALANCE control is set to 65%.
WAVE BALANCE=10%
Maximum Penetration and
reduced cleaning
WAVE BALANCE=50%
Balanced with 50% penetration
and 50% cleaning
WAVE BALANCE=65%
Maximum Cleaning and
reduced penetration
10% 50% 65%
90% 50% 35%
(+ ) (+ ) (+ )
(-) (-) (-)
DOWN SLOPE This parameter operates in TIG modes only and is used to set the time for
the weld current to ramp down, after the torch trigger switch has been
pressed, to CRATER CUR. This control is used to eliminate the crater that
can form at the completion of a weld.
CRATER CUR. This parameter operates in SLOPE or REPEAT (4T) TIG modes only and
is used to set the finish current for TIG. The CRATER Current remains on
until the torch trigger switch is released after it has been depressed.
POST-FLOW This parameter operates in TIG modes only and is used to adjust the post
gas flow time once the arc has extinguished. This control is used to
dramatically reduce oxidation of the tungsten electrode.
Table 4 – Weld Parameter Descriptions for Pro-Wave 185TSW