Distance settings, 21 distance settings – Sonics GXL User Manual
Page 22
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I N S T R U C T I O N M A N U A L • M O D E L G X L P O W E R S U P P LY
21
DISTANCE SETTINGS
There are 7 distance parameters that can be specified. To better understand
the distance parameters and corresponding terms used, please see the
diagram below and note the following definitions.
➀
Home Position: when the converter head assembly is in the full up
position, not in contact with the parts to be welded. The home (head up)
position is equivalent to the linear encoder 0 position and is used as the
distance reference for the absolute distance set point.
➁
Pre-trigger Position: when the system begins to travel and crosses
the Pre-trigger position, ultrasonics will be turned ON (this will be prior to
making contact with the parts to be welded).
➂
Contact Position: the position at which the horn has contacted the top
of the parts to be welded and pressure is applied. If the parts and system
are in position and engaged properly, the contact point will be found
within the “pre-weld window” (see below). The contact point is also used
to reference the incremental distance set point.
➃
Pre-weld Window: The pre-weld window is defined by two settings,
the Pre-Weld Limit Low (4L) and the Pre-Weld Limit High (4H). (See the
parameter list that follows for additional information.) If the window has
been defined and programmed, the contact point would ideally occur
somewhere in between these two settings. (Remember that increasing
distance settings corresponds to downward travel and the “0.000”
position corresponds to the horn position all the way “up.”) The purpose
of the pre-weld window is to prevent the system from welding fixtures in
case no parts have been loaded, if the parts are not engaged properly or
HEAD UP/
INITIAL TRAVEL
CONTACT
WELD
HORN
HORN
HORN
1
2
3
4L
6
4H
5L
5H
PA
RT
B
PA
RT
A
PA
RT
B
PA
RT
A
PA
RT
WE
LD
ED
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