CHAPTER 4: OPERATING INSTRUCTIONS
UB25 LINEAR DC RESISTANCE WELDING CONTROL
990-665
4-7
Section IV. Programming the Weld Monitor
1
Press the
SCHEDULE
button, then select a Weld Schedule using
either
the
▲▼
arrows
or
the numeric keypad. Fire the welder and view the output waveform (shaded
graph) on the display.
2
Press the
ENERGY
key to access the
MONITOR
screen.
3
Perform a weld and view the trace of the weld parameter, use the
or
key to view the desired waveform.
4
Toggle the Pulse 1 weld time/energy selector key to select the
upper
limit field for the
weld period. Use the numeric keypad or the
▲▼
arrows to enter the
upper limit
value
for the Pulse 1 weld period. The Power Supply can monitor:
Current
from
0
→
1.2
kiloamps.
Voltage
from
0
→
6.5
volts.
Power
from
0
→
8.0
kilowatts.
5
Perform
one
of the following to program the Pulse 1 monitor limit mode:
•
Press the
kA
key to program
current
as the limit mode.
•
Press the
V
key to program
voltage
as the limit mode.
•
Press the
kW
key to program
power
as the limit mode.
6
Toggle the Pulse 1 weld time/energy selector key to select the
lower limit
field for the
weld period. Enter the lower limit value for the Pulse 1 weld period.
NOTE:
In order for a Pulse 1
lower limit
to be programmed, you must
first
program a
Pulse 1 upslope in the weld schedule.
The lower limit mode (current, voltage, or power) will automatically be the same as the
upper limit mode programmed in Step 5.
7
Press the
COOL
weld period key.
This will bring up the
PULSE 1
OUT OF LIMITS ACTION
screen.
This screen allows you to select the
action that the Power Supply will
take if the Pulse 1 upper or lower
limits are exceeded. You have
four
choices:
•
NONE
takes no action if upper or lower energy limits are exceeded.
PULSE 1 OUT OF LIMITS ACTION
1. none
2. STOP DURING PULSE 1
3. INHIBIT PULSE 2
4. APC: STOP PULSE 1/ALLOW PULSE 2
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