Amada 300 Series, Operation Manual

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CHAPTER 3: OPERATING INSTRUCTIONS
SERIES 300 FAST RESPONSE WELD HEAD SYSTEM
3-18 990-115
The Weld-to-Displacement Feature
Successfully using the weld-to-displacement feature requires some understanding of the timing relationship
between the Power Supply and the Weld head Control. The discussion below assumes that the Weld Head
Control is connected to a Miyachi Unitek power supply. If you are not using a Miyachi Unitek power
supply, refer to your power supply user's manual for specific instructions.
When the weld head reaches the WELD force, the firing switch solid state relay closes. This is the ‘start’
signal to the Power Supply. The Power Supply starts within a couple of milliseconds, and the FWUP force
occurs later, exactly at the time set for DLY milliseconds. You must set up the Power Supply properly so
that the FWUP force occurs at the right point in the weld cycle. Here is a check-list to ensure that the Power
Supply and the Weld Head Control are synchronized for the weld-to-displacement function (it assumes that
the units are interconnected as described in Chapter 2):
Program the weld function and weld energy as follows:
1 Set the switch debounce option to 0ms. This eliminates the time delay between receipt of the start signal
to the time when the Power Supply actually delivers energy to the weld.
2 Set the weld head type to MANUAL. This allows the Power Supply to be activated through the force
firing switch input.
3 Set the footswitch abort option to ON. This allows the Weld Head Control to shut off the Power Supply
by disabling the start signal when the programmed displacement is reached.
4 Program the Power Supply for the desired weld function (BASIC, PRE/POST HEAT, etc.) to properly
perform the weld.
5 Set the weld current to a low value. For example, try 1 kA.
Program the profile for the weld as follows:
On the Power Supply
On the Weld Head Control