CHAPTER 4: OPERATING INSTRUCTIONS
UB25 LINEAR DC RESISTANCE WELDING CONTROL
4-6
990-665
Dual-Pulse 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 to enter the time or use the
▲▼
arrows. Enter a time
between
0
and
99
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 to program the Pulse 1 feedback mode:
•
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 to enter the time or use the
▲▼
arrows. Enter a
time between
0
and
99
milliseconds.
8
Press the
COOL
key to enter the amount of time between Pulse 1 and Pulse 2. Use the
numeric keypad to enter the time or use the
▲▼
arrows. Enter a time between
0
and
99
milliseconds. We recommend at least 2 milliseconds.
9
Program Pulse 2 by repeating Steps 3 through 7 above using the keys for Pulse 2, entering
appropriate values for Pulse 2.
10
Press the
HOLD
key to enter the amount of time for the hold period after the weld. Use
the numeric keypad to enter the time or use the
▲▼
arrows. Enter a time between
0
and
999
milliseconds. We recommend at least
50
milliseconds.
