Tweco 200 ACDC Arcmaster(April2006) - Manual (Page 31)

ARCMASTER 200 AC/DC
April 13, 2006 4-5
PEAK CUR. This parameter sets the PEAK weld current when in PULSE mode
WELD This parameter sets the TIG WELD current in STD , SLOPE , REPEAT and
SPOT modes when PULSE is OFF. This parameter also sets the STICK
weld current.
BASE
(BackgroundCurrent)
This parameter sets the Background current when in Pulse TIG mode.
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.
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.
The SAVE/LOAD buttons are used to save and retrieve a total number of
5 programs into the 200AC/DC memory.
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%.
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.
WAVE BALANCE=10%
Maximu m Penetratio n and
redu ced cleaning
WAVE BALANCE=50%
Balanced with 50% pen etration
an d 50% cle an in g
WAVE BALANCE=65%
Maximum Cle aning and
reduced penetration
10% 50% 65%
90% 50% 35%
(+ ) (+ ) (+ )
(-) (-) (-)
Table 4-3 (continued): ArcMaster 200 AC/DC Front Panel Parameter Description