Dukane DPC II Plus 9001:2000 - Manual (Page 80)

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Dukane Manual Part No. 403–566–01
DPC ™ II Plus and EZ Welder System – User’s Manual
Weld Method – Energy
If a Power Output module is installed, you can
choose the Energy Welding method. The decision
menu for choosing the Weld Method was shown
in Figure 7–15. Use the down arrow key to move
the cursor next to
WELD BY ENERGY selection
and press the ENTER key. To setup the Energy weld
method, you must first enter the desired welding
energy (see Figure 7–17).
Press ENTER and the maximum weld time data
entry screen is displayed as shown in Figure 7–
18. This is the time limit on the welding process
if the specified energy has not been reached.
Enter a value which permits the desired weld
energy to be reached.
Press the
ENTER key
to return home to the
Process Setup menu.
Weld Method –
Ground Detect
The GROUND DETECT
welding method is
available in both MPC
Probe and Auto Probe
conf igurations. In
ground detect mode,
the ultrasonic signal is
initiated when the op-
erate input is triggered
and terminated when
the horn touches the
metal fixture during
the welding cycle. For
the ground detect fea-
WELD ENERGY
125 J
MAX WELD TIME
1.250 SEC
Figure 7–17 MPC Probe Weld Energy
Figure 7–18 MPC Probe Maximum Weld Time
DEFINITION
Power is defined as Energy per unit of Time
(i.e. how fast energy is produced or consumed).
Energy is defined as the capacity to do Work.
The release of energy does work, and in do-
ing work on something, adds energy to it.
Work and energy are equivalent concepts. The
Weld–By–Energy mode measures energy in
units of Joules. By definition, a Watt ( power ) is
one Joule ( energy ) per Second ( time ). Therefore
a Joule is equivalent to one Watt–Second.
Horn
Fixture
Base
Plastic
Insulating
Sheet
Plastic
Washer
Ground
Detect
Wire
The horn is grounded and acts as
a switch closure when it contacts
the fixture.
Connect a wire
from the fixture
to pin 14 of J901
Install a plastic insulator
between the fixture
and the base.
Use plastic insulating wash-
ers between the bolts and
fixture. Center the washers
so the bolts do not touch
the inside of the fixture
mounting holes
Figure 7–19 Ground Detect Fixture Isolation