CHAPTER 6: ADVANCED WELD FUNCTIONS
MODEL HF2 2 kHz HIGH FREQUENCY RESISTANCE WELDING POWER SUPPLY
990-057
6-13
Dual Pulse - Weld Graph Run Screen
(Figure 6-26)
Weld schedule 009 is pre-programmed at the
factory for Dual Pulse operation. The HF2 Weld
Control automatically recognizes the presence of
a Manually or Air Actuated Weld Head before
the first weld is made.
Figure 6-26. Dual Pulse -
Weld Graph Run Screen
Dual Pulse - Alphanumeric Run Screen
(Figure 6-27)
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. Note: when programming the Dual
Pulse weld function that uses an Air Actuated
Weld Head, press [ ] to scroll the program
screen to the right to access the Down and Hold
periods.
Figure 6-27. Dual Pulse -
Alphanumeric Run Screen
PULSATION (Figure 6-28)
Pulsation allows the HF2 Weld Control and
largest HF2 Weld Transformer to be used for
applications normally requiring more weld
energy by pumping in more total weld heat
through the use of many sequential weld pulses.
The first Weld Period is followed by an
alternating sequence of Cool and Weld Periods.
The Pulsation number defines how many
Cool/Weld Periods will follow the first Weld
Period. Using the Pulsation can damage the
crystal structure of the parts by making them
more brittle.
Figure 6-28. Pulsation
Pulsation can be used with Unitek Peco Force Fired Manual or Air Actuated Weld Heads. For Manually
Actuated Weld Heads, weld current begins when the Force Firing Switch closes. For Force Fired Air
