Tweco 300 ACDC Arcmaster - Manual (Page 29)

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4.03 Weld Parameter Descriptions for ArcMaster 300 AC/DC
Figure 4-3. ArcMaster 300 AC/DC Front Panel with Parameter Description
Parameter Description
PRE-FLOW
This parameter operates in TIG modes only and is used to provide gas to the weld
zone prior to striking the arc, once the torch trigger switch has been pressed. This
control is used to dramatically reduce weld porosity at the start of a weld.
HOT START
This parameter operates in all weld modes except Lift TIG mode and is used to
heat up the weld zone in TIG modes or improve the start characteristics for stick
electrodes. e.g. low hydrogen electrodes. It sets the peak start current on top of
the
PEAK (WELD) current.
e.g. HOT START current = 130 amps when PEAK (WELD) = 100 amps &
HOT START = 30 amps
INITIAL CUR. This parameter operates in SLOPE or REPEAT (4T) TIG modes only and is used to
set the start current for TIG. The Start Current remains on until the torch trigger
switch is released after it has been depressed.
UP SLOPE This parameter operates in TIG modes only and is used to set the time for the weld
current to ramp up, after the torch trigger switch has been pressed then released,
from INITIAL CUR to PEAK or BASE current.
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
(Background Current)
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.
Table 4-3. Weld Parameter Descriptions for ArcMaster 300 AC/DC