23
5.2
CONTROL SYSTEM
The control system is equipped with a powerful microprocessor and the basic design consits of an internal
µ
PLC
connected to the operator panel; this is a very flexible system which will be able to take any software released in future.
The graphic interface is supported by a operator panel with an LCD display and illuminated push-buttons. The
µ
PLC
completely controls the chamber by means of an analogic-digital interface.
The CHALLENGE chambers are completely run by the operator panel and/or WINKRATOS
®
software manufactured
specially by Angelantoni S.p.A.
If WINKRATOS
®
software is used, the chamber is then controlled by an external PC with a serial connection (both the
WINKRATOS
®
software and the PC can be purchased as accessories for the chamber).
Both the operator panel and the WINKRATOS
®
control the chamber alarm and safety signals in order to ensure a really
reliable system. They also enable complex test cycles to be programmed and memorized on a disk. Auxiliary operations
can also be run, the command to open and close the auxiliary contacts can be inserted in the programming of the heat
and climatic cycles in order to be able to synchronize the switching on and off of external equipment at precise points
in the programmed cycles.
The WINKRATOS
®
software enables external signals coming, for example, from measurement apparatus to be acquired
through ten analogic inputs; these signals are converted to digital signals and are inserted inside data log files so they
can be memorized and visualized and printed in graphs.
The (optional) printer works either alphanumerically or graphically (as a data logger or as a traditional recorder) and provides
a paper copy of the programmes or data log files.
PC
Data memory programmes
for user interface
Adjustment of alarm system
logic state
Operator panel with LCD display
PLC micro
Sensors
Power board
Floppy disk
mouse
RS232/485
To the remote RS 232/485
5.6