Amada 300 Series, Operation Manual

Page: 51 / 80

CHAPTER 3: OPERATING INSTRUCTIONS
SERIES 300 FAST RESPONSE WELD HEAD SYSTEM
990-115 3-19
1 Access the graphical setdown RUN screen.
2 Try a weld.
NOTE:
The weld time that you program into the
Weld Head Control is the total time that the Power
Supply energy will be supplied to the weld
materials. Start out with short weld times and work
up to the minimum time that a weld requires.
3 Gradually increase the WELD time and/or the Power Supply weld energy until you produce a
satisfactory weld.
4 Note the appearance of the SETDOWN graph on the setdown RUN screen. The graph should not have
abrupt changes in it, but rather a ‘sideways S’ shape as shown.
5 Set the DLY time so that the FWUP force impulse (the trapezoid on the top line) occurs just when the
SETDOWN graph shows the welding materials just starting to melt (that is, the SETDOWN
displacement just starts to change rapidly).
6 Experiment with WELD time, WELD force, FWUP
time, FWUP force DLY time, and Power Supply
energy until you achieve the desired weld and
setdown displacement.
NOTE:
Do not experiment with Power Supply time.
7 Access the graphical setdown PROGRAM screen and select the WELD STOP feature. Using the [
▲▼ ]
keys, move the weld stop line to just above the final setdown line.
8 Increase the WELD time by 20 milliseconds. Now, the weld-to-displacement programming will shut off
the Power Supply when the programmed setdown displacement is achieved.
9 Repeat the weld. The Power Supply should now shut off prior to the end of the WELD time
programmed on the Weld Head Control.
10 Experiment with the WELD STOP program to achieve consistently good welds with the desired
setdown displacement.
10ms
SCH: 002 SETDOWN: .0068inch WELD: 8.9ms
.000
.002
.004
.006
.008
▲▼ Select Schedule  RUN 
SCH: 002 SETDOWN WELD STOP: .0075inch
.000
.002
.004
.006
.008
▲▼ Adjust CHNG None, ENTER Next
20ms
Weld Stop
Final Setdown