Supervisory control of a spinning plant
Due to the sophisticated manufacturing process requested by
polypropylene yarns, the technology has a decisive weight;
the supervisory control of the whole manufacturing process makes
it possible to produce any colour and to reproduce it consistently
also after many months; the supervisory system guarantees that all
product characteristics (torsions, title, tenacity, stabilization,
...) fit perfectly with technical specifications requested by the
customer; that allows a product standardization with a consequent
reduction of production and delivery times.
All phases of the manufacturing process (dosing of polymer and
colour, heating, extrusion, stabilization and final winding with
spool automatic change over) are constantly controlled by the
supervisory system that, thanks to various serial channels with
appropriate protocols, communicates with all control devices (PLCs,
temperature and pressure controllers, motor drives, indicators).
The man/machine interface is simple, prompt and effective; it
displays plant templates with different levels of detail, gives an
immediate signalling of any new alarm or abnormal condition, allows
management of working recipes organized by customers or articles,
provides quality reports with graphical trends of all significant
variables of the process.