CHAPTER 5: SETUP SOFTWARE
UB25 LINEAR DC RESISTANCE WELDING CONTROL
990-665 5-9
Switch Debounce Time
The contacts of mechanical firing switches "bounce" when they close. The switch debounce time function
allows you to specify that the initiation switch contacts must remain closed for 10, 20, or 30 milliseconds
before the weld period can be initiated, thereby avoiding false starts caused by the switch contact
bouncing. In addition to the debounce time, there is a delay of no greater than 2.5 ms before the start
signal is recognized by the Power Supply.
NOTE: The factory default debounce time is 10 milliseconds (ms).
1 Go to the SETUP 1 screen.
2 Press the 2 key to access the SWITCH
DE-BOUNCE TIME menu.
3 Select the required debounce time by pressing the 1, 2, 3, or 4 key. The LCD will automatically
return to the SETUP 1 screen and the SWITCH DEBOUNCE TIME line will now reflect your
time selection.
NOTE: NONE represents a debounce time of 0 msec. Use NONE for interfacing with the
AMADA WELD TECH SL-320A Electronic Weld Force Control.
4 Press MENU to return to the MAIN MENU.
Firing Switch
1 Go to the SETUP 1 screen.
2 Press the 3 key to get the FIRING
SWITCH menu.
3 Press the 1, 2, or 3 key to select switch
type. The LCD will automatically return
to the SETUP 1 menu with your
selection highlighted.
• AUTO accepts a single pole, double pole, or optical firing switch input, typically from an
AMADA WELD TECH weld head. Firing switch activation indicates that the weld head
has reached the set weld force and is ready for the weld energy sequence (including squeeze
time) to start.
• NONE is used when welding with a non force-fired weld head. With NONE selected, a
footswitch closure activates the 24 VAC Air Valve Driver and initiates the weld energy
sequence (including squeeze time). Sufficient squeeze time must be programmed in the
1. NONE
2. 10ms
3. 20ms
4. 30ms
NUMBER Select MENU Previous menu
1. AUTO
2. NONE
3. REMOTE
NUMBER Select, MENU Previous menu
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