Danfoss MCO 305 Design Manual page 27

MCO 305 Design Guide
Typical applications are:
− Bottle washing machines.
− Foil wrapping.
− Packaging machines.
− Conveyors.
− Multi axis hoists.
− Filling.
− Printing.
− Cut on the fly.
Application Example: Packaging with Fixed Product Distances
This application consists of two conveyors, 1 carry-
ing empty boxes another one carrying teddy bears;
the purpose of the machine is to put teddies into the
boxes. Both boxes and teddies come with a fixed
distance and it is ensured that there is no slip
between the encoders and the boxes and teddies. It
is thus sufficient to position synchronize based on
the encoders. At start it is ensured that the master
(box conveyor) it always in the same position, the
teddy conveyor needs to be homed prior to starting
synchronization. There are 3 ways to ensure that
the teddies are aligned with the boxes when
starting:
− Adjust the physical position of the home/reference switch.
− Adjust home offset in parameter 33-01.
− Adjust position offset for synchronization in parameter 33-12.
NOTE: The following is just an example and the presented settings and programs might not cover the
complete functionality required by a real application.
It is assumed that the motor and encoder connections are checked and that all basic parameter settings
such as motor data, encoder data and PID controller are done. Instructions for setting up parameters can
be found in FC 300 Operating Instructions and MCO 305 Operating Instructions.
Parameter Settings and Commands for Packaging Application
The following MCO 305 parameters are relevant for
position synchronization:
__ Functions and Examples __
Control behavior with position synchronization
®
MG.33.L5.02 – VLT is a registered Danfoss trademark
32-0* Encoder 2 – Slave
32-3* Encoder 1 – Master
32-6* PID-Controller
32-8* Velocity & Acceleration
33-1* Synchronization
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