8521-EB-MT redundant EBIM can be used for critical applications

Description

The Ethernet BIM incorporates a rigorous redundancy model, HART® capability and a fault tolerant Ethernet implementation to manage communications on the process network and deliver reliable system operation in your application. Process I/O™ is a field-mounted distributed I/O system that provides an intelligent interface between field-mounted instrumentation and the Host system. Process I/O™ interfaces to virtually all process signals including HART®, providing a complete solution for your I/O needs.

The complete platform has an environmental specification capable of surviving conditions out in the plant. It is built for harsh process applications, being shock and vibration resistant, operating over the industrial -40°C to +70°C temperature range that is typically associated with field transmitters, and meeting ISA’s stringent G3 corrosion resistance requirements. The EBIM and I/O components can all be mounted directly in Division 2/Zone 2 hazardous areas and, when required, can provide a cost effective intrinsic safety solution. Because the system can be mounted in the field, it can also provide extensive cost savings by eliminating the need to wire all sensors back to a central controller. With the EBIM and its I/O mounted in the field, the only wiring back to a control room is the high-speed network.

Redundant EBIMs can be used for critical applications. The master/standby pair operate in a rendezvous redundancy mode with frequent status checks to assure a rapid and bumpless transfer to the standby if required. The redundancy model supports on-line configuration and on-line firmware changes, where any updates are shared between controllers in real-time, resulting in an easy to use redundant system. The EBIM also supports LAN redundancy. A fully redundant local area network (LAN) can be provided where each EBIM has two independent Ethernet ports connected to two separate independent networks. The EBIMs monitor the networks’ health and will switch between networks when they detect a problem. Redundant power supplies are available to provide power for critical applications that must not shut down if a power supply malfunctions.

In terms of function: PLC has already achieved analog control function, and some PLC systems have even strong analog processing capabilities, such as Yokogawa FA-MA3, Siemens S7 400, ABB Control Logix, and Schneider Quantum systems. And DCS also has strong logical processing capabilities, such as achieving all possible process interlocks and equipment linkage start-stop on CS3000.
In terms of system structure, the basic structure of PLC and DCS is the same. PLC has been fully ported to computer system control today, and traditional programmers have long been eliminated. Small application PLCs generally use touch screens, while large-scale application PLCs fully utilize computer systems. Like DCS, the controller and IO station use a fieldbus (usually based on RS485 or RS232 asynchronous serial communication protocol). If there is no expansion requirement between the controller and the computer, that is, if only one computer is used, this bus will also be used for communication. But if more than one computer is used, the system structure will be the same as DCS, and the upper computer platform will use Ethernet structure. This is one of the reasons why the concept of DCS is ambiguous after the large-scale PLC.

The development direction of PLC and DCS: Miniaturized PLC will develop towards a more specialized usage perspective, such as more targeted functions and application environments. The boundary between large-scale PLC and DCS gradually fades down until it is fully integrated. DCS will continue to develop in the direction of FCS. The core of FCS, in addition to more decentralized control systems, is particularly important in instrumentation. The application of FCS abroad has developed to the instrument level. The control system only needs to handle signal acquisition and provide human-machine interface and logic control. The control of the entire analog quantity is dispersed to the on-site instruments, and there is no need for traditional cable connections between the instruments and the control system. The entire instrument system is connected using a field bus. At present, Yokogawa in China has used FCS in the CNOOC Shell petrochemical project, and the instrument level uses intelligent instruments such as EJX, which has the world’s most advanced control level.

How to treat PLC and DCS correctly? I personally never emphasize the superiority or inferiority between PLC and DCS. I have used a new term “control products” for them. We provide users with the most suitable control system. The vast majority of users do not use DCS just because they want to use a set of DCS, and control products must be positioned on the basis of meeting the user’s process requirements. In fact, most users who propose to use DCS or PLC have never been exposed to self-control products or have some special needs. Overemphasizing this will only lead to a dispute of words.

We have gained an understanding of the general situation of control products based on the differences and commonalities between PLC and DCS. Please note that as professionals, we should not define our products as PLC or DCS, and we cannot psychologically differentiate our products in this way.

Model recommendation:
5466-258
5501-470
5501-471
3500/77M 176449-07
DSF-2000-MB-UV 2653-213-06
KJ2221X1-BA1
IC698RMX016-ED
IC698CRE030-DE
IC687BEM731-AB
IC698CHS009A
IC698PSD 300C
IC698PSA350E
CLS216
ACC-5595-208 350-805595-208N
SCE903A3-002-01
SCE905AN-002-01
5SHX1445H0002 3BHL000387P0101
KUC755AE106
DSDP140B 57160001-ACX
DSDP140A
DSDP140B
PP881 3BSE092978R1
PFTL101A 0.5KN
KUC755AE105 3BHB005243R0105
KUC711AE