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3 SERIES TIG PENDANT MANUAL
When Sync to Pulse is in effect, Peak and Background
periods are determined by setting the pulses per
second parameter and the primary width parameter.
The pulses per second parameter range in value from
0.1 to 10.0 pulses per second in 0.1 increments and
will determine how long it takes to complete one Peak/
Background cycle.
For example, a pulses-per-second parameter value of
1.0 means that on Peak/Background cycle takes 1.0
seconds; a pulses-per-second value of 10.0 means
that there are 10 Peak/Background cycles each sec-
ond so a complete Peak/Background cycle takes only
0.1 seconds; a pulses-per-second value of 0.1 means
that there is only 0.1 of a Peak/Background cycle each
second so a complete Peak/Background cycle would
take 10 seconds.
The primary width parameter is a percentage value
that ranges from 20 to 80 percent and determines what
proportion of each complete Peak/Background cycle
is allocated to Peak. For example, consider the val-
ues shown in FIGURE 25 - Sync to Pulse where the
parameter value for pulses per second is set to 1.0 and
the parameter value for primary width is set to 20. In
this case, there will be 1 Peak/Background cycle each
second and 20 percent of each cycle will be allocated
to Peak (the remaining 80 percent of the cycle will be
allocated to Background). In this case, Peak output
values will be in effect for 0.2 seconds followed by 0.8
seconds of Background output values and so on.
For Sync to Oscillation and Sync to Pulse selections,
the values associated with the Wire Speed, Amperage,
and Hot Wire Amperage on the Sync Mode screen
indicate whether the associated weld variable is to
be synchronized with Peak and Background cycles.
A value of 'Yes' means it will be synchronized and a
value of 'No' means it will not. The value associated
with Voltage can take one of three values as shown in
FIGURE 26 - Voltage Sync Values.
Selecting the Peak Only option means that the Peak
voltage value will be output at all times when welding.
Selecting the Background Only option means that the
Background voltage value will be output at all times
when welding. Selecting the Peak and Background
option means that the voltage output while welding will
alternate between Peak and Background values.
The synchronization choices made on the Sync Mode
screen will affect the options and selections that are
available on other screens; particularly the Process
Setup screen and the Idle, Test, and Weld screens.
When weld variables are synchronized, both values will
be available on these screens; when not synchronized,
only one value will appear.
Sector Setup Screen
As discussed in the Process Setup section, there can
be from one to eight weld sectors enabled in a weld
program. Conceptually, the weld sectors can be pic-
tured as sections on the surface of a horizontally posi-
tioned pipe. For example, a weld program could have
four defined sectors intended to correspond to the
entire outside surface of a pipe; a sector associated
with the area between the 12 o'clock and the 3 o'clock
position, a sector associated with the area between the
3 o'clock and 6 o'clock positions, a sector associated
with the area between the 6 o'clock and the 9 o'clock
positions, and a sector associated with the area
between the 9 o'clock and 12 o'clock positions.
FIGURE 27 - Sector Setup Screen
As discussed in the Process Setup section, Sector 1 is
required to be enabled. If a weld program has only one
sector enabled, it will be Sector 1. When multiple sec-
tors are enabled, the effective weld parameter values
can transition those associated with one
enabled sector to those associated with the next
enabled sector during a weld. The transition between
sectors can be initiated manually by the operator or
can occur automatically at predetermined points using
the Auto-Sector feature.
A-34
OPERATION
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