90 1019572 REV. 03
Factory air input may affect weld results for applications requiring more weld pressure
buildup.
6.2.3 Downspeed Control
The Downspeed Control regulates the horn velocity. Downspeed has a significant effect on
the force buildup on the workpiece, and hence the quality of the weld. If the Downspeed
control is closed, the actuator will not extend.
6.2.4 Actuator Alignment and Height (Horn travel)
The horn carriage will travel up and down on the actuator’s slides. The actuator can also
be adjusted up or down on the column. The distance between the fixture and horn should
allow easy and ready access and removal of your parts.
• Minimum stroke cannot be less than 1/8”
• Maximum stroke cannot exceed 3-3/4” before part contact to allow for the operation of the
dynamic flow through mechanism
Consistent weld results are best measured when the horn travel is more than 1/4 inch,
because a shorter distance can be affected by other components of the welding system
and a suitable build-up of pressure on the parts.
6.2.5 Mechanical Stop
The Mechanical Stop affects the amount of downward travel the Actuator is allowed to
have, up to the full stroke length of the unit. The multi-turn knurled knob to the right of
the Stack, on the bottom of the Actuator, is the Mechanical Stop adjustment. The
Mechanical Stop has an indicator on the right side of the Actuator, showing a scale of an
arbitrary unit of measure.
The Mechanical Stop is designed to stop the Horn from contacting your Fixture in the
event your part is missing. It is not a precision measuring device, and it is usually not
recommended that this be used as a ‘collapse’ or other distance weld limiting device. The
“missing part” function can also be used to control critical horn to fixture distances.
Initially, set the mechanical stop to allow at least 1/4 inch of Horn travel, but any distance
up to the full stroke length is suitable.
NOTICE
Factory Air pressure must be greater than the maximum system
requirements. The compressed air system must have sufficient
capacity to serve all of the systems connected to it. The use of an
accumulator may be required to provide continuous air flow.
NOTICE
Be sure to set the down speed control to a slow setting, between 5
and 15, for an initial setup. The downspeed control knob has a set-
screw locking mechanism that can be used, if desired.
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