c. Actual values
Press the ACTUAL switch on the front panel to view actual values.
Use actual values to calculate weld cycle measurements for greater
accuracy and repeatability, as well as to compare with limits set. Actual
values measure as follows:
•
actual time —
the time from the trigger switch becoming active
until the end of the weld time portion of the cycle;
•
actual collapse —
the distance between the trigger switch becoming
active to the end of the hold time portion of the cycle; and
•
actual absolute —
the distance from the upper limit switch
becoming inactive to the end of the hold time portion of the cycle.
d. Pretriggering
In pretriggering, ultrasonic energy activates on the Upper Limit Switch
(ULS) instead of the Trigger Switch (TRS) when DIP switch settings are
altered.
Use pretriggering in certain applications such as staking when you
need ultrasonics to start (pretrigger) before contacting the workpiece.
You can also use pretriggering for large or hard-to-start horns.
Pretriggering ultrasonics at the ULS is generally recommended in
staking, insertion and sheer joint welding applications.
9001W+
4-5
Operation
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