Page 55 - Industrial Plant 2020

is in the two redundant servers, which guarantee an making the most of the potential of each electrical
high system reliability, because of the two machines and instrumental component.
are able to manage the entire system, so that, in the
event of a failure of one of the two servers, the other The communication network between the operator
can continue to guarantee full system functionality; control cabins and the power and control cabins has
they are the collector of all the information that PLCs been made of single-ring fiber optics, to make the
obtain with a remote I / O system. most of the signal speed, while inside each substation
this connection was made with copper (RJ45) having
The PLCs are connected to the SCADA system to star connections, exploiting its high level of
which they transmit the recorded status and from conductivity.
which they receive commands to be given to the
actuators, through a connection to the field systems; The Electrical and Instrumental
the PLC CPUs are able to exchange data with each System is designed in order to have
other to coordinate and / or interlock border areas of a unique control of the whole plant,
the plant. where the electrical distribution
and automation systems exchange
In this way, a highly performing architecture is outlined data and dialogue together to allow
both in terms of service continuity and system data operators to control both locally and
collection. remotely from multiple SCADA station

The power and control panels have all been equipped
“Intelligent” communications with hardwired remote control system for acquiring the
and diagnostics signals from the field and some other signals from the
control panel (such as 230 Vac and 24 Vdc
The Electrical and Instrumental System is designed circuitbreakers), while Inverters, Softstarters and
with the target of having a unique control of the whole Measuring instruments have been connected through
plant, where the electrical distribution and automation RJ45, as per above mentioned.
systems are able to exchange data and dialogue
together to allow operators to have the control both The system and process diagnostics have been
locally and remotely from multiple SCADA station. designed to ease the so-called “predictive
In order to manage the systems in the best way, an maintenance”: the operator can chose how to act on
“intelligent” communication network has been used, the system, whether in automatic, semi-automatic or

IndustrIal Plants - May 2020
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