Tweco 160 TS Arcmaster - Manual (Page 26)

ARCMASTER ® 160TS
March 31, 2006 3-4
Parameter Description
PRE-FLOW
This parameter operates in TIG modes only and is used to get 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 BASE (WELD) current.
e.g. HOT START current = 130 amps when BASE (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
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.
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
fi nish 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 fl ow time
once the arc has extinguished. This control is used to dramatically reduce oxidation of the
tungsten electrode.
The SAVE/LOAD buttons are used to save and retrieve a total number of 5 programs into
the 160TS memory.
Table 4 – Weld Parameter Descriptions for ArcMaster 160TS