100-412-182 REV. 06 39
4.2 Physical Description
Refer to Chapter 5: Installation and Setup for dimensional information
4.2.1 Standard Items
Slide Mechanism
The slide mechanism is based on eight sets of preloaded, permanently lubricated
bearings, proving consistent, precise alignment of the horn, smooth linear motion, and
long-term reliability.
Limit Switch, Function
The solid state Upper Limit Switch (ULS) signals the control circuits in the Power Supply
that the carriage has returned to the top of its stroke (home) and is ready to start another
operating cycle.
The Power Supply uses ULS signal to perform various control functions, as in the following
examples:
• Indexing Control: In automated systems, the Linear Encoder generates an Actuator Clear signal
at a preset distance along the travel of the horn. This signal can be used to trigger a safety
interlock switch, controlling movement of the material handling equipment (indexing) before the
horn is fully retracted
• Electronic Pretriggering: A 2000X-series Power Supply can use the ULS signal to activate
ultrasonics before the horn contacts the workpiece. Pretriggering is used with large or difficult-to-
start horns and in specialized applications
Mechanical Stop
The mechanical stop limits the downward travel of the horn. to prevent equipment
damage, adjust the stop so that the horn will not contact the fixture when no workpiece is
in place. The mechanical stop knob is graduated to represent the stroke adjustment per
turn. The adjustment in 0.025 inch (0.635 mm) per turn. Turning counterclockwise
increases the stroke; turning clockwise will shorten the stroke. It is not intended for use in
welding by distance.
S-Beam Load Cell and Dynamic Follow Through
The S-Beam Loaded Cell measures the force being applied to the part of the trigger
ultrasonics and record the welding parameters. The S-Beam load cell assembly ensures
that pressure is applied to the part prior to the application of ultrasonic energy.
To maintain horn-to-part contact and force as the joint collapses, the S-Beam load cell
assembly provides dynamic follow-through. As the plastic melts, the S-Beam load cell
assembly ensures smooth transmission of ultrasonic energy into the part.
CAUTION General Warning
Do not run the Actuator with the locking nut loose. It may cause ULS
alarms and affect the force readings.
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