Category: ABB

System communication

System bus

The system bus interconnects the process stations,

operator stations and engineering station in the

Freelance 800F system.

The system bus complies with the Ethernet Standard

according to DIN/ISO 880 , Part  (IEEE 80 . ) and

can be used with twisted pair, fiber optic or coaxial

cable. It is also possible to use a combination of

these standards or to implement 100-MBit/s compo

nents within a network as high-speed backbone.

Freelance uses confirmed and unconfirmed services.

The unconfirmed UDP service is used for screen up

dating and lateral communication between controllers.

The confirmed TCP/IP service is used for alarming

and trend archiving.

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.

Mechanical design of Rack I/O

The Freelance 800F Rack modules have a mechanical

design similar to that used in programmable logic

controllers. Its front panel connection method makes

it exceptionally easy to assemble and to service, also

allowing it to be mounted on the wall.

Freelance 800F Rack modules are inserted into racks

from the front and secured in position with screws.

Each is contained within a metal enclosure providing

exceptional mechanical ruggedness and electromag

netic immunity.

All casing materials used are simply screwed togeth

er, allowing them to be separated for future recycling.

Last but not least, the Freelance hardware compo

nents have taken environmental protection into ac

count by using a minimal amount of paint. The mod

ules have no jumpers or switches whatsoever on the

printed circuit boards, meaning that the user does

not need to open the cartridges. No potentiometers

have been used either.

The Freelance Rack I/O is designed to operate in

ambient conditions of 0 to 50° C (32 to 122 °F) with

out forced cooling. A temperature sensor within the

cartridge monitors the temperature of the module

and triggers an alarm when the maximum value

permitted is exceeded.

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.

Intelligent I/o modules

The I/O modules link the controller and the process,

for signal conversion. They receive data from sensors,

detectors, transmitters and other field devices and

issue positioning commands to the process.

They have the following tasks and characteristics:

• Input and conversion of conventional signals and signal levels

• Galvanic isolation between the process and system

• Status LEDs for inputs/outputs

• Externally-powered outputs

• Automatic fault detection, fault signaling and

temperature monitoring

• Sensor and line-break monitoring

• Short-circuit and overload-protected digital outputs

• Digital inputs protected against incorrect polarity

• Potentially isolated analog inputs

• Hot-swap capability

• No switches, jumpers or potentiometers, as all

settings are configured using the software

• Front panel connection of process signals via

screw terminals with keyed blocks, codeable

against incorrect connection

All Freelance Rack I/O modules are intelligent, i.e.

they have their own processors. Users can configure

the scan times of the I/O modules individually for

each module. The fastest scan time is  ms for binary

modules and 10/500 ms for analog modules. In case

of communication errors, the output modules switch

the outputs to configurable safety values. Where

controller redundancy is configured, the second

controller takes over without interruption.

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.