CHAPTER 4: OPERATING INSTRUCTIONS
UB25 LINEAR DC RESISTANCE WELDING CONTROL
4-8
990-665
•
STOP DURING PULSE 1
stops the weld immediately during Pulse 1, and prevents
Pulse 2 from firing (if applicable).
•
INHIBIT PULSE 2
stops the weld at the end of Pulse 1, and prevents Pulse 2 from
firing. This function will not operate if both pulses are joined
without
a cool time.
•
APC: STOP PULSE 1/ALLOW PULSE 2
stops Pulse 1 immediately after upper
or lower energy limits are exceeded, but allows Pulse 2 to fire. This function will
not operate if both pulses are joined
without
a cool time.
NOTE:
See "Active Part Conditioner" in
Chapter 3.
8
After making your selection the display will automatically return to the monitor screen.
9
Program the upper and lower limits for Pulse 2 by repeating Steps 4 through 6 above using the
keys for Pulse 2, entering appropriate values for Pulse 2.
NOTE:
The monitor limit mode (current, voltage, or power) for Pulse 2 can be different than
the monitor limit mode for Pulse 1.
13
Press the
HOLD
period key. This
will bring up the
PULSE 2 OUT OF
LIMITS ACTION
screen.
This screen allows you to select the
action that the Power Supply will
take if the Pulse 2 upper or lower
limits are exceeded. You have
two
choices:
•
NONE
takes no action if upper or lower energy limits are exceeded.
•
STOP DURING PULSE 2
stops
PULSE 2
immediately after upper or lower
energy limits are exceeded.
14
After you have made your selection the
display will automatically return to the
MONITOR
screen.
NOTE
:
The Power Supply adds dotted lines
to the appropriate graph to show the
programmed limits
.
The screen on the right shows how the
Limits
and
Alarm
actions appear when an
actual weld trace is displayed on the LCD.
NOTE
:
All lower limits apply only to the Pulse 1 and Pulse 2
WELD
periods. Lower limits do
not
cover any upslope or downslope periods. All upper limits apply to the entire Pulse 1 and
Pulse 2 periods, including their upslope and downslope periods.
PULSE 2 OUT OF LIMITS ACTION
1. none
2. STOP DURING PULSE 2
NUMBER Select, MENU Previous menu
