WTC MedWeld 3005, Operator'S Manual

Page: 89 / 206

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When Function #60 appears before any weld function in a schedule, the
control displays IMP (impulses) rather than CY (cycles) to indicate the
weld control will pulsation weld. Refer to Function #60 on page 4-7 for
more information.
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The following weld functions will select the Automatic Current
Compensation (ACC) firing mode.
30 WELD nn CY/IMP nnnn0 AMPS*
31 TEMPER nn CY/IMP nnnn0 AMPS
32 PREHEAT nn CY/IMP nnnn0 AMPS
33 POSTHEAT nn CY/IMP nnnn0 AMPS
34 PRE-WELD nn CY/IMP nnnn0 AMPS
* The stepper is active during this function.
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ACC faults may occur when the control is firing at or near the high and
low range of current. The current range for each control is unique and
depends on factors such as the size of the weld transformer. Experiment
with the control to determine the upper and lower range of current each
control can provide.
When Function #60 appears before any weld function in a schedule, the
control displays IMP (impulses) rather than CY (cycles) to indicate that
the weld control will pulsation weld. See Function #60 on page 4-7 for
more information.
When monitoring secondary current, the minimum "no-weld" current
for the selected current range will be used for ACC and stepper
increment. This is versus the 16 A. no-weld current used when
monitoring primary current. The SCIB minimum "no-weld" cycle
currents for 25 kA., 50 kA. and 100 kA. jumper settings are 300, 600 and
1200 A., respectively.
20 cycles
Secondary
05000 A.
WELD 20 CY 05000 AMPS
Time (Cycles)
current (A.)