CHAPTER 4: OPERATING INSTRUCTIONS
UB25 LINEAR DC RESISTANCE WELDING CONTROL
990-665
4-5
Upslope/Downslope Weld Schedule
1
Press the
SCHEDULE
button, then select a Weld Schedule using
either
the
▲▼
arrows
or
the numeric keypad.
2
Press the
SQUEEZE
button to enter the squeeze time before the weld. Use the numeric
keypad to enter the time or use the
▲▼
arrows. We recommend 150 ms.
3
Press the
PULSE 1 UPSLOPE
button to enter the amount of time for the Weld Pulse 1
upslope
. Use the numeric keypad or the
▲▼
arrows to enter the time. Enter a time
between
0
and
99
milliseconds. A good starting point is
5
milliseconds.
4
Press the
PULSE 1 WELD
key to highlight the
bottom line
of the LCD to enter the weld
time. Use the numeric keypad to enter the time or use the
▲▼
arrows. Enter a time
between
0
and
99
milliseconds.
5
Press the
PULSE 1 WELD
key again to highlight the
middle line
of the LCD to enter
weld energy
. Use the numeric keypad to enter the
energy level
or use the
▲▼
arrows.
The Power Supply output ranges are:
Current:
from
0.005
→
1.000
kiloamps.
Voltage:
from
0.100
→
4.900
volts.
Power:
from
0.050
→
4.900
kilowatts.
6
Perform
one
of the following:
•
Press the
kA
key to program
current
as the feedback mode.
•
Press the
V
key to program
voltage
as the feedback mode.
•
Press the
kW
key to program
power
as the feedback mode.
7
Press the
PULSE 1 DOWNSLOPE
key to enter the amount of time for the Weld Pulse
1
downslope
. Use the numeric keypad or the
▲▼
arrows to enter the time. Enter a time
between
0
and
99
milliseconds. A good starting point is
5
milliseconds.
8
Press the
COOL
key to enter the amount of time for the cool period after Pulse 1. Use
the numeric keypad to enter the time or use the
▲▼
arrows. Enter
0.5
milliseconds.
9
Program Pulse 2 by repeating Steps 3 through 7 above using the keys for Pulse 2, entering the
value
0
in each step.
10
Press the
HOLD
key to enter the amount of time for the hold period after the weld. Use
the numeric keypad or the
▲▼
arrows. Enter a time between
0
and
999
milliseconds.
We recommend at least
50
milliseconds as weld strength is formed in the hold time.
