Field Bus

Fieldbus

The generic term for industrial serial communication systems

Why use Fieldbus

Central control Reduce wiring Simple cable routing

Cost reduction Central diagnostics

and monitoring

Where to use Fieldbus

Systems with widely spaced I/O

Plant with many machines

Applications include: Automotive assembly Paper making Printing Airport goods handling Chemical processing Food and drink packaging Energy production Security systems Water treatment Traffic control

System layout

Machine with widely spaced I/O Plant with many machines

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Input and output devices

Switches and sensors wire to remote input modules

Output devices wire to remote output modules

Bus specific devices wire direct to the bus

Fieldbus VE2

Modular system Expand to 128 I/O total

from a single node interface

Modules close coupled, distributed up to 500m or mixed

Protection to IP 65 Easy protocol change State of art diagnostics

Fieldbus VE2

Fieldbus interface module

Interchangeable protocol

PROFIBUS DP, InterBus-S, Device-Net

CanOpen soon

Fieldbus VE2

I/O modules: inputs for reed

switches and sensors outputs for external

valves and relays 8 inputs or outputs or 4

of each per module

Valve island V20 / V22

Full range of 5/2 and 5/3 valves

Integrated rigid base and wireway

Proven sealing technology

Double solenoids single width single end

Low power 1.5 W 24V dc

Close coupled modules

Central PLC control For remote positions

with concentrated action

Each interface station assembled with I/O and valves required

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Distributed modules

Central PLC control Remote interface, I/O

and valve islands

Communication distance up to 500m

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AS-Interface (Actuator Sensor Interface)

AS-I (Actuator Sensor Interface)

Open system Low cost installation Stand alone system Sub-system from gateway High immunity to noise

and interference Simple node attachment Protection to IP65

Tree Topology Total cable length 100m 32 Nodes per system I/O 124 maximum

Input output Modules

4 Way modules2 inputs, 2 outputs or4 inputs or4 outputs

8 Way modules4 inputs and 4 outputs

Bus cable (yellow) parallel pair no screen plus power for inputs

Power cable (black) for outputs

Input output Modules

Quick connection Pins pierce the

insulation displacement cable (IDC) as the node is clipped on

Protection to IP65

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AS-I Valve islands

Configurations 2 Valves / 2 Inputs 4 Valves 4 Valves / 4 Inputs 8 Valves

AS-I System

Controller generating communication signals on yellow cable

Power supply modules Outputs module 4 Inputs module 4 Module 2 inputs / 2

outputs AS-I Valve Island

Gateways

Complex systems may link Fieldbus types

A gateway converts one protocol to another

A gateway / controller for fast local system with communication to a higher Fieldbus

PROFIBUS DP

AS-I AS-I

PLC

AS-I Controllers

Gateway controllers can function in three ways

A stand alone AS-I controller

Active gateway controlling the local AS-I system

A passive gateway acting only as a translator

DeviceNet

PROFIBUS DP

Integrated PLC

Stand alone or bus master

Integrated PLC

Combined PLC, I/O interface and valve island

Choice of valve islands Nugget 30, 40, 120 and MIDI*STAR

Stand alone system controller, or

Fieldbus master to control up to 62 slaves

Easy programming using descriptive text statements

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