CHAPTER 6: ADVANCED WELD FUNCTIONS
2 KHZ INVERTER WEDLING POWER SUPPLY
6-10
990-057
When Rollspot is used with a Non-Force Fired Air Actuated Weld Head, the Squeeze (SQZ) Period must
be used to allow sufficient time for the electrodes to close and apply the required weld force to the parts
before the Weld Period begins. Weld current begins when the Squeeze Period ends and both levels of a
two-level Foot Switch are closed.
Rollspot welding continues for as long as all switches remain closed. Hold has no meaning with Manually
Actuated Weld Heads and does not appear on either the weld schedule Program or Run screens.
Rollspot - Weld Graph Run Screen
(Figure 6-20)
Weld schedule 007 is pre-programmed at the
factory for Rollspot operation. The Power Supply
automatically recognizes the presence of a
Manually or Air Actuated Weld Head before the
first weld is made.
Figure 6-20. Rollspot -
Weld Graph Run Screen
Rollspot - Alphanumeric Run Screen
(Figure 6-21)
To simultaneously view all pre-programmed time
periods and energy settings, press
CHNG
to select
the Alphanumeric Run screen. The 7 digit Weld
Counter is displayed in the upper right corner.
Figure 6-21. Rollspot -
Weld Graph Run Screen
SEAM (Figure 6-22)
Seam can be used to make automated hermetic
seam welds using automatic feeders, and PLC or
host computer control. Seam can also be used to
make manual or semi-automatic non-hermetic
seam welds using an operator.
CAUTION:
It is easy to exceed the duty cycle
rating for the Transformer using the Rollspot weld
function. Refer to
Chapter 2, HF2 Weld
Transformer Electrical Specifications.
Figure 6-22. Seam
