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Process-level automation: Freelance Rack I/O

Rack I/O is installed in conjunction with DCP10 or

DCP0 rack CPUs. Rack CPUs do not have access

to fieldbus I/O or field devices. In connection with the

AC 800F, Rack I/O is used when a rack CPU has

been replaced by the AC 800F, or if SOE functionality

is needed. In addition, I/O cycles are faster with Rack

I/O than with fieldbus. For example, up to 88 binary

signals can be updated within  ms using just one rack.

By using a well-shielded metal case for each module

and also installing EMC filters in each incoming and

outgoing lead, measures have been adopted to

comply with EMC standards without the need of

installation in cubicles. As a result, the Freelance

800F hardware meets the binding EMC standards

and bears the CE Mark. The requirements of IEC 801

and the NAMUR industrial standard have also been

fulfilled. A sophisticated test strategy, the installation

of optical inspection systems, and integrated self-test

functions ensure that the modules are highly reliable.

Quality and electromagnetic compatibility

By using a well-shielded metal case for each module

and also installing EMC filters in each incoming and

outgoing lead, measures have been adopted to

comply with EMC standards without the need of

installation in cubicles. As a result, the Freelance

800F hardware meets the binding EMC standards

and bears the CE Mark. The requirements of IEC 801

and the NAMUR industrial standard have also been

fulfilled. A sophisticated test strategy, the installation

of optical inspection systems, and integrated self-test

functions ensure that the modules are highly reliable.

HART devices can be connected using HART

compliant modules of the S800/S900.

If the HART devices are connected to the S900.

certain S900 modules can be used to transfer

additional HART values to the cyclical I/O mapping.

This makes it possible to use the second or third

measured values of a HART device in the AC 800F

as an input for applications.

Process-level automation: Field devices

Freelance 800F enables you to connect and con

figure PROFIBUS PA devices without directly using a

PROFIBUS PA module for the AC 800F. The LD 800P

Linking Device allows you to operate PA devices on

the PROFIBUS DPV1 module without reducing the

DP bus speed to the lower PA baud rate.Similarly,

the LD 800HSE Linking Device allows you

to connect and configure FOUNDATION Fieldbus H1

devices without the need for an AC 800F fieldbus

module for FOUNDATION Fieldbus H1. The configu

ration of control in the field with FOUNDATION

Fieldbus is supported by Freelance.

HART devices can be connected using HART

compliant modules of the S800/S900.

If the HART devices are connected to the S900.

certain S900 modules can be used to transfer

additional HART values to the cyclical I/O mapping.

This makes it possible to use the second or third

measured values of a HART device in the AC 800F

as an input for applications.

S900

The remote S900 I/O system can be installed directly

in zone 1 and zone  hazardous areas.

It communicates with the control system level using

the Profibus standard, therefore reducing marshalling

and wiring costs. The system is sturdy, error-tolerant

and easy to service. Moreover, the S900 I/O system

is characterized by a compact design, cyclical trans

mission of secondary HART variables, parameteriza

tion and diagnosis of all HART field devices via the

fieldbus. Its redundancy ensures maximum availability.

Integrated disconnection mechanisms allow replace

ment during operation, meaning that there is no need

to interrupt the primary voltage in order to exchange

the power supply units. Thanks to its sturdy, space

saving design and stable casing that is suitable for

any environment, S900 is the best and most cost

effective I/O system for use in zone 1 and  hazard

ous areas.

S800

S800 I/O is a comprehensive, distributed and modu

lar process I/O system that communicates with parent

controllers via PROFIBUS. Thanks to its broad con

nectivity, the system is able to communicate with a

wide range of process control systems from both

ABB and other suppliers.

By permitting installation in the field, close to sensors

and actuators, S800 I/O greatly reduces the installa

tion cost by reducing the cost of cabling. It is possi

ble to exchange modules and reconfigure the system

during operation. Redundancy options allow a high

degree of availability.

Process-level automation: Remote I/O

The fieldbus module for PROFIBUS enables connec

tion of remote I/O units such as the S800 or S900.

Whereas the S800 is generally used in process auto

mation, the S900 is preferred, due to its extended

channel diagnostics and intrinsic safety, in the chemi

cals segment and in areas where explosion protec

tion is required.

S800

S800 I/O is a comprehensive, distributed and modu

lar process I/O system that communicates with parent

controllers via PROFIBUS. Thanks to its broad con

nectivity, the system is able to communicate with a

wide range of process control systems from both

ABB and other suppliers.

By permitting installation in the field, close to sensors

and actuators, S800 I/O greatly reduces the installa

tion cost by reducing the cost of cabling. It is possi

ble to exchange modules and reconfigure the system

during operation. Redundancy options allow a high

degree of availability.

FouNDATIoN Fieldbus Linking Device

LD 800HSE

LD 800HSE serves as a gateway between High

Speed Ethernet (HSE Subnet) and the FOUNDATION

Fieldbus field devices on H1 links. The provision of

data from a H1 link to the HSE Subnet, as well as

from one H1 link to another, is guaranteed by the

communication – typical of FOUNDATION Fieldbus –

between field devices on various H1 links and field

devices on the HSE Subnet. In addition, the client/

server gateway allows function blocks in H1 devices

to be accessed via the HSE interface. LD 800HSE is

also designed for redundancy.

other fieldbus devices

To protect the fieldbus segment and the links, the

Fieldbus Barrier FB 900 series can be used. The PC

900 Power Conditioner provides a higher supply

current for a H1 link. These devices are described

in detail in ABB’s Fieldbus Devices brochure

Intelligent linking devices

As the AC 800F possesses the high-speed connec

tion of both PROFIBUS (PROFIBUS DP) and FOUN

DATION Fieldbus (FF-HSE), the slower buses of the

two fieldbus technologies (PROFIBUS PA and FF-H1)

can be connected using intelligent linking devices.

These devices allow to connect several slow buses

to one fast bus, with the advantage that a lot more

field devices can be connected to an AC 800F sta

tion than when the slow fieldbuses are connected directly.

LD 800P PRoFIbuS DP/PA Linking Device

LD 800P is needed to connect PROFIBUS DP to

PROFIBUS PA. The LD 800P Linking Device converts

the physical bus characteristics of the RS 485 inter

face for the PROFIBUS DP into PROFIBUS PA physi

cal bus characteristics according to IEC 61158- ,

enables connected PROFIBUS PA devices to be

supplied with power via the bus, and additionally

allows use in intrinisically safe areas.

Fieldbus modules

The AC 800F uses the fieldbus modules to collect

and process real-time and diagnostic data. Up to

four fieldbus modules can be mounted into one AC 800F.

The fieldbus modules have the following tasks and

characteristics:

• Electrical isolation between the process and system

• Status LEDs for the module status

• Independent fault detection and fault signaling

• Connection of the fieldbus lines

Ethernet modules

Process stations and the operator and engineering

level in the Freelance 800F system communicate with

each other via Ethernet.

Intelligent linking devices

As the AC 800F possesses the high-speed connec

tion of both PROFIBUS (PROFIBUS DP) and FOUN

DATION Fieldbus (FF-HSE), the slower buses of the

two fieldbus technologies (PROFIBUS PA and FF-H1)

can be connected using intelligent linking devices.

These devices allow to connect several slow buses

to one fast bus, with the advantage that a lot more

field devices can be connected to an AC 800F sta

tion than when the slow fieldbuses are connected directly.

Functions

The scope of functions provided by the Freelance

system corresponds to the basic supply defined in

IEC 611 1- , in addition to numerous other high

performance, industry-proven functions and function

blocks. They are accommodated in a function block

library and can be supplemented by user-specific

function blocks. While designing the station and

during configuration, the processing capacity and

speed of the process station can be easily adapted

to the demands of the automation task. Program

execution in the process station is based on a task

oriented, real-time multitasking operating system,

leading to a flexible strategy for processing programs.

Different modes are available for task execution:

• Cyclical processing with cycle times from 5 ms upwards

• Fastest-possible processing (PLC mode)

Along with the user tasks, system tasks – in which

functions can also be processed – are automatically

made available. These tasks are executed once in

case of the following events:

– RUN

– STOP

– COLD START

– WARM START (voltage restored)

– REDUNDANCY TOGGLE- ERROR

Up to eight cyclic user tasks and one PLC mode task

can be configured in a process station.