Software
Software
The proposed system is composed of a PLC and a PC on which the software is installed. This software developed by Buffoli Impianti using the Windows system is able to supervise the line in all its typical parameters (flight bars location, temperatures, currents, etc.) and interacts by changing these parameters. All software and hardware used are standard and easily available on the market. It is possible to connect the PC with the local network prior definition of terms and data that you want to share.
In order to obtain data exchange between different components of the line the Profibus connection is used.
This system, property of Siemens, enables the PLC (Master) the access to some areas of the PLC (Slaves). This allows individual areas to work independently.
For safety reasons some information will be exchanged between the areas using electrical contacts rather then Profibus connection.
Set-up
In order to make the software easy re-usable for future applications and re-adaptable in case of modifications are foreseen some pages to set-up the line in its principal parts:
- Number and type of tanks
- Number of transporters
- Number and type of rectifiers
- Number and position of multiple rinses
- Dosing pumps and positions on which they operate
Number of temperature controllers and positions on which they operate
Articles Data Base
It is possible to create an articles data base to manage the typical treatment data of each article:
- Part number,
- Finishing required,
- Dipping time for all the electrolytic baths,
- Currents for the electrolytic baths,
- Ideal loading of the flight bars,
Surface of every pieces (by calculation)
Plant synoptic
On this page is indicated the lay out of the line with the position of the transporters, flight bars, etc.
Temperatures
The values of temperatures are dynamically displayed showing both in graphical or tabular way. The alarm thresholds (min. and max.) and the working value can be set.
All the information concerning the temperatures are stored inside the database and can be displayed both in graphical or tabular way.
Rectifiers
The rectifiers can be interfaced with the software.
The main page summarizes all the rectifiers displaying the values of tension and current. The working parameters of each rectifier are pulled out from the articles data base thus ensuring, for each processed rack or barrel, the perfect working conditions.
In the same way is possible to connect to the PC the pH meter installed.
All the information concerning the rectifiers are stored inside the database and can be displayed both in graphical or tabular way.
Dosing pumps
The dosing pumps can be configured by setting:
- The working threshold,
- The volume of material to be added to the baths.
After every addition its value will be registered in order to be processed for statistical process control.
Alarms
The management of the alarms is made according to the ISA 1A standard with acoustic and luminous signals as well as with detailed visual indication.
The alarms database can be consulted even after long time.
Process statistics
With the supervising database it possible to get all data related to:
- analysis of rejection with control of the treatment quality;
tracking of cycles for each article;
percentage of use for each process tank.
LEGALE