User guide

Operation l 4-49
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Operation
Mode Page Descriptions - Puller
Modes
(continued)
Profile/Bubble/Taper Mode
This is a special mode that is used to sequence through a set of velocity changes
in order to make a product with varying diameters. It is similar to Master Mode
except it has many setpoints (Master Mode has one setpoint). This mode is used
with the Matching Mode on the cutter.
In this mode, the operator sets velocities and distances. Two distances are provid-
ed for every velocity. The first distance is the length used to make the speed
change. Other names for this portion are the transition, ramp or the gradient. After
this portion there is a steady state distance. Names for this second portion are
maintained, steady and level. The programmed velocity is maintained throughout
the second distance portion.
NOTE: The small diameter portion of the profile may be referred to as tip or tube.
The large diameter may be referred to as bump, body, bubble or belly.
Analog and digital outputs are included with Profile/Bubble/Taper Mode. These
may be used to assist production. For example, it is typical to use air to assist at
the extruder die for support of the profile. If a simple puff of air is required then
the digital outputs are perfect for this to open and close a valve quickly. A more
complex product would use the analog option.
See Operation Section entitled,
Profile/Bubble/Taper Page Description.
Remotes
Remote Contact Type
Two versions of Remote are available that also effect the set puller speed. One
method uses wired raise and lower contacts (a 3-wire system). Contacts that can
be controlled manually (remote buttons) or can be controlled from an automated
diameter gauge. The change amount for each contact closure is a user-preferred
setting and is available on the Set up 1 Scroll page. The programmed change (up
or down) is made when the remote contact changes from open to closed. While a
contact remains closed a further programmed change will be made every half
second.
Remote Digital Pot Type
Another style of Remote is a type that uses a digital rotary potentiometer. A digi-
tal potentiometer can be rotated continuously in either direction, at a fast or slow
rate. It has a similar feel to a 10-turn analog potentiometer but has no mechanical
limits and is unaffected by electrical noise. Clicks of the dial (36 clicks per revolu-
tion) can be programmed to any increment size on the Set Up 1 Scroll page. For
example, the smallest increment can be programmed to make a 0.01-FPM change
(0.36-FPM per full revolution).
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