WTC Technitron T2050, Description And Instructions

Page: 30 / 61

@b_WbQ]]Y^WdXUD" %
"& =_TYVYUT*(!% ! DUSX^Ydb_^D" % GU\T3_^db_\
E`c\_`U3iS\Uc
The upslope current will range from the Initial Current up to the
Weld Current over the Upslope Time. The timing range is 0 – 99
cycles. For example, if your Weld Cur is set to 60% of available
current, and Upslope Time is set to 5 cycles, then upslope weld
will start at the Initial Current value (or 60% if programmed
higher) and ramp up to 60% of available current over the 5 cycles
of time.
GU\T3iS\Uc
The duration of the weld current in line cycles. The range is 0 –
99 cycles.
GU\T3eb
The amount of current passed during Weld Cy. Program this
current in terms of primary or secondary A. if SW1–1 is closed, or
percent available current if SW1–1 is open. Current ranges are
20% – 99% in AVC mode or 0 – 65.5 kA. in Constant Current
mode. In CC mode, the display starts at 0 to 999A, then shifts
from 999A to 1.0 kA. and continues to 65.5 kA.
3__\dY]U
Cool time is the duration of time in line cycles during which no
weld current is passed; therefore, the weld nugget begins to cool.
The range for this instruction is 0 – 99 cycles.
9]`e\cUc
The number of times the schedule loops back to the WELD CY
instruction before the schedule moves on to HOLD CY. The range
for this instruction is 1 – 999. If set to 1, the sequence will not loop
back to the WELD instruction, resulting in only one pulse of
weld/cool. If set to 2, the control will loop back once for 2 weld/
cool pulses. Impulses are used to weld multi-layer or very thick
material by controlling the time the heat is applied. If Impulses
are set to 999, the control will enter Seamer or Roll Spot mode and
deliver weld/cool pulses until the pilot is removed.
4_g^c\_`U3iS\Uc
The Downslope current will range from Weld Current to the
Slope End Current over the Downslope Cycle time. The timing
range is 0 – 99 cycles. For example, if Weld Cur is set to 60% of
available current, and Downslope time is set to 5 cycles, then
downslope weld will start at the Weld Current value of 60% and
ramp down to the Slope End current (or 60% if it is programmed
higher) over the 5 cycles of time. Use Downslope to slow down
the cooling of the nugget, to prevent cracking and brittle weld
spots.
C\_`U5^T3ebbU^d
Downslope current will range from the Weld current value over
the Downslope time in line cycles, to the value programmed in
this location. The data range for this instruction is 20% – 99% in
AVC Mode or 0 – 65.5 kA. in Constant Current mode. The control
will accept a value larger then the Weld Current value, but will
not deliver a current greater then the Weld current during the
Downslope time. Therefore, the DOWNSLOPE function will be
down only or possibly flat, but never up to the Slope End current.