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Registration Control
Software tools
to implement electronic gearing and registration control applications
Specialized software for registration control makes
it easy to implement advanced electronic gearing and synchronization between
multiple axes in registration applications. Typical applications include:
- Rotary Die
- Rotary Knife
- Registered Flying Shear
- Printing
- Labeling including continuous feed labeling
The combination of an SMLC system and the CoDeSys
software provides a powerful, easy to use registration control solution. High
speed sensors on the drives can capture real-time axis position within one
microsecond of assertion, and initiate motion on the next position loop update
(between 0.4 and 1.0 msec delay depending on the loop rate).
| Feed Roll Registered to
Knife Pacer Encoder |
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feed roll and knife pacer encoder are electronically geared to feed one
product pitch for each revolution of the knife. A photo eye captures the
knife and feed roll positions once per product pitch. Captured knife
position is used for instantaneous corrections, while feed roll position
measures product pitch used in trending corrections. |
Built-in Registration Support
Standard software tools provided make it simple
to keep an axis in register or synchronized with a key feature of the material
under control, typically using a high speed sensor. To keep an axis in register,
motion of the axis must be continually adjusted based on measurements from a
sensor that detects a mark on the material. Two types of corrections, trending
and instantaneous, provide solutions for distinct application requirements.
Axis motion compensates for variations in the actual distance between features
on the material, pitch length (for trending corrections), variations in the
desired axis position relative to the material, or the phase between the axis
and material (instantaneous corrections).
Trending Registration
With trending corrections, the registered axis is
electronically geared to another axis using a base gear ratio. The registration
sensor captures the position of the axis feeding the material, and is compared
to the previously captured position to determine the pitch length between marks.
Each measurement is compared to the nominal pitch length, and is used to adjust
the base gear ratio and maintain precise synchronization between the two axes.
Instantaneous Registration
With instantaneous corrections, the registration
sensor captures the position of the registered axis at the instant the mark is
detected. Captured position is compared to a set point which defines where the
registered axis should be when the mark is detected. The difference between the
set point and captured position is used to adjust the position of the axis in
real-time.
 Click here for
Registration Control Software Datasheet (52k).
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