|
Employer: |
SHELL GAS
BULGARIA |
|
Project: |
Gas filling
plant in Benkovski, Plovdiv district |
|
Subproject: |
Microprocessor system for vizualization and control |
|
Design: |
For
performance of conventional and microprocessor part |
|
Main contractor: |
Start engineering Co. |
|
Kinds of activities: |
Design
(hardware and software),
installation and commissioning |
|
Performance: |
Finished in
1999 |
|
Short description of
the project:
The
project was performed by specialists of
Start
engineering Co.
branch
Sofia by preliminary design of
Kvaerner Process (Provence) SNC
and specific
requirements of the employer.
The
microprocessor control system consists of programmable logic controller
(PLC)
SIMATIC
S7-300
of
SIEMENS
and operator’s station
(OS)
based on
a personal computer
(PC)
Packard Bell.
The connection between them is digital
–
serial
interface by
RS485
standard
with conversion in the
ÐÑ
by
MPI
card.
The
PLC
is
supplied by
24V
DC from redundant rectifier
40À,
and the
PC –
from
220V,
50Hz.
The 220V,
50Hz
supply
of the rectifier and the
PC
is from
UPS
of
Merlin Gerin.
The
application software for the controller is realized by means of the
programming language
STEP 7
of
SIEMENS,
and the application software for the operator’s station – by means of the
vizualization software
WinCC
of
SIEMENS.
System
configuration
Main operating
screen
Fire fighting system
screen
