Unitec Peco HF25A, Руководство пользователя

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CHAPTER 3: USING PROGRAMMING FUNCTIONS
HF25 DC RESISTANCE WELDING SYSTEM
3-20 990-333
Weld Head Applicability
The weld functions can be used with Unitek Peco force fired, manual weld heads; air actuated weld
heads; or Series 300 Electronic Force Controlled Weld Heads. For manually actuated weld heads and
the Series 300 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 the weld functions are used with a non-force fired, air actuated weld head, the squeeze 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.
When the weld functions are 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 to provide
additional heat sinking or parts cooling.