Unitec Peco HF25A, User Manual

Page: 61 / 177

CHAPTER 4. OPERATING INSTRUCTIONS
HF25D DC RESISTANCE WELDING SYSTEM
990-333 4-3
Section II. Programming Weld Schedules
Introduction
The Control comes with 99 factory-installed
weld schedules, numbered from
01 through 99 .
Each schedule looks like the display on the right.
See
Section III, Using HF25 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 key on the front of the Control.
2. Press the SCHEDULE key on the right of the Control.
3. Use either of the methods below to select a schedule:
•
Use the
VW
(Up/Down) keys 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 Control. 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 Control will
require a minimum of 0.5 ms Cool Time. If different feedback modes are programmed for a dual
pulse weld, the Control 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 Control will default to 0.5 ms Cool Time.