CHAPTER 6: ADVANCED WELD FUNCTIONS
MODEL HF2 2 kHz HIGH FREQUENCY RESISTANCE WELDING POWER SUPPLY
6-14
990-057
Actuated Weld Heads, weld current begins when both levels of a two-level Foot Switch are closed and
the Force Firing Switch in the Air Actuated Weld Head closes.
When Pulsation 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.
When Pulsation is used with any type of Air Actuated Weld Head, the Hold Period can be used to
automatically keep the electrodes closed on the parts after weld current has terminated for the purpose of
providing additional heat sinking or parts cooling. Squeeze and Hold Periods have no meaning with
Manually Actuated Weld Heads and do not appear on either the weld schedule Program or Run screens.
Pulsation - Weld Graph Run Screen
(Figure 6-29)
Weld schedule 010 is pre-programmed at the
factory for Pulsation operation. The HF2 Weld
Control automatically recognizes the presence of
a Manually or Air Actuated Weld Head before
the first weld is made.
Figure 6-29. Pulsation
Weld Graph Run Screen
Pulsation - Alphanumeric Run Screen
(Figure 6-30)
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 6-30. Pulsation
Alphanumeric Run Screen
