CHAPTER 6: ADVANCED WELD FUNCTIONS
2 KHZ INVERTER WEDLING POWER SUPPLY
990-057
6-7
Alphanumeric Screen
UP/DOWNSLOPE (Figure 6-13)
Up/Downslope facilitates welding material
combinations such as aluminum-to-aluminum or
platinum-to-tungsten. Up Slope allows a
reduction in electrode force, resulting in a cleaner
appearance by reducing electrode indentation,
material pickup and electrode deformation. Up
Slope can also be used to displace plating and/or
oxides, reduce flashing and spitting, or reduce
thermal shock when welding parts containing
glass-to-metal seals. Downslope assists in the
grain refinement of certain heat-treatable steels
and prevents cracking in aluminum and other
materials by reducing the cooling rate.
Figure 13. Pre/Postheat
Alphanumeric Screen
Up/Downslope can be used with AMADA WELD TECH 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 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 Up/Downslope 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 Up/Downslope 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.
Up/Downslope - Weld Graph Run Screen
(Figure 6-14)
Weld schedule 005 is pre-programmed at the
factory for Up/Downslope operation. The Power
Supply automatically recognizes the presence of a
Manually or Air Actuated Weld Head before the
first weld is made.
Figure 14. Up/Downslope
Weld Graph Screen
