84 100-214-251 REV. 05
6.1.1.2Limits IW+ only
Weld modes can be monitored by setting Time, Collapse, and Absolute Limits (+ and - )
from the front panel. When these limits are set, the welder will compare the actual values
to your set limits.
Use Time, Collapse and Absolute limits to alert you to variations in your weld cycle.
6.1.1.3Actual Values IW+ only
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.
6.1.1.4Pretriggering
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.
Pretrigger Settings
Table 6.2 Limit Function
Limit Functions
+ Limit
Selects maximum value for the currently selected mode, either Time or
Distance. Can be used to check distance (inches/mm) as well as time
(seconds) when welding.
-Limit
Selects minimum value for the currently selected mode, either Time or
Distance. Can be used to check distance (inches/mm) as well as time
(seconds) when welding.
Table 6.3 Pretrigger Settings
DIP Switch
Pretriggering
Settings
Result
SW1-1 OFF Pretrigger OFF
SW1-1 ON
Pretrigger ON Ultrasonics pretrigger when ULS becomes
inactive
SW1-3* OFF
Weld Time starts when TRS becomes active.
Ultrasonics start when ULS becomes inactive.
100-214-251 IWoper.book Page 84 Friday, June 16, 2017 4:12 PM
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