CHAPTER 4: OPERATING INSTRUCTIONS
UB25 LINEAR DC RESISTANCE WELDING CONTROL
990-665
4-3
Section III. Programming Weld Schedules
Introduction
The Power Supply comes with 99 factory-
installed weld schedules, numbered from
01
through
99
. Each schedule is set to the same
preset value and looks like the display on the
right. See
Chapter 3, Using UB25 Welding And
Monitoring Functions
for descriptions of the
features available in weld schedules.
The process of
Programming
a weld schedule consists of:
•
Select
a weld schedule.
•
Enter
new values in the selected schedule.
NOTE:
For reference and convenience, you might want to keep a written list of your programmed weld
schedule values using the two-digit weld schedule number.
Select a Weld Schedule
1
To select weld schedules, first make sure that the
RUN
state is displayed on the LCD. If not,
press the
RUN
button on the front of the Power Supply.
2
Press the
SCHEDULE
button on the right of the Power Supply.
3
Use
either
of the methods below to select a schedule:
•
Use the
▲▼
(Up/Down) buttons to scroll through the list.
OR
•
Use the numeric keypad to enter the two-digit number of the schedule you want.
Enter New Values
Some welding applications require no more than a simple weld schedule, programmed for Single-
Pulse, Upslope/Downslope, or Dual-Pulse operation. For other applications, you may want to use the
Energy Limits Monitor
or
Active Part Conditioning
features of the Power Supply. To
enter new
values
, follow the instructions for Single-Pulse, Upslope/Downslope, or Dual-Pulse weld schedules
on the following pages.
NOTE:
If drastically different energy values are entered for Pulse 1 and Pulse 2, the Power Supply
will require a minimum of 0.5 ms Cool Time. If different feedback modes are programmed for a dual
pulse weld, the Power Supply will require a minimum of 0.5 ms Cool Time. If a Cool Time is set
lower than 0.5 ms, but not zero, the Power Supply will default to 0.5 ms Cool Time.
