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Quarter-Trol Registration Control System for
Proportional Registration Control
Quarter-trol – Setup/Operation

Overview
Scanning Devices manufactures the HB Quarter-trol
system, a bi-directional proportional registration control
system with automatic repeat length variation adjustment.
It is ideal for applications where a web operation must be
synchronized or registered to a mark. Die-cutting, bagmaking, can winding, and label application are all proven
applications for the Quarter-trol system.

Installation
Rotary shaft encoder installed on onerevolution-per-repeat shaft
Scanner installed over web positioned to detect
registration mark
Wire correction motors
System set-up in three easy steps
Program Mode – set up Quarter-trol with system
parameters
Manual Mode - establish machine registration
using Quarter-trol adjustment switches
Switch to Auto Mode - Quarter-trol takes over
Programmable parameters include
Registration tolerance setting
Repeat length correction setting
DIF and PIV motor run time settings
Out of Registration Alarm setting
Inspection window setting (disregards extraneous
print between registration marks)

Using an optical sensor to detect the registration mark and
a rotary shaft encoder to monitor the position of the
process tool, Quarter-trol measures the deviation from
registration and generates correction signals proportional
to the registration error detected. It then delivers outputs
used to drive correction motors that will automatically
adjust tool position back to proper registration.
Features/Capabilities
Easy to operate - intuitive controls
Automatically adjusts for repeat length variations (PIV)
Automatically corrects for differential (DIF) registration
errors
Use of encoder allows for fine adjustments when precision is
required, 1 part in 6000 per repeat
Outputs for both Forward and Reverse corrections to DIF and
PIV correction motors
In-process adjustments to registration can be made while in
full auto mode
Front panel display lights guide operation during manual
mode and reports on automatic corrections when in Auto
mode
Available as a complete system with industrial enclosure, or as
component for integration into existing system control panel

Scanning Devices CX6 Scanner & Encoder
General Purpose Registration Mark Scanner
Optimized for color contrast detection
NPN Transistor Collector sinks current to power
supply minus, 100 milliamps MAX
Selection Switch for Light mark on dark background
or Dark mark on light background
Multi-turn adjustment dial
Quick disconnect cables, 6’ to 15’, ext. available
Vertical and horizontal orientation
Scanning Devices Encoder
o Rotary shaft
o 600 PPR

Scanning Devices, Inc. - P.O. Box 192, Lexington, MA 02420 - 781-272-5135, mail@scanningdevices.com