W05 Basics of setting up

PROFIBUS-PA networks

Martin RuckSiemens

Jason Nicholl Phoenix

Kris HardakerUnited Utilities

Basics of setting up a Profibus PA Network

1. What is Profibus PA

2. Benefits of using a Fieldbus

3. System Components

4. Profibus PA Rules

5. Network Configuration

Agenda

Demonstration Network Configuration• Jason Nicholl - Phoenix

• Pactware FDT/DTM

• Kris Hardaker - United Utilities• Simatic PDM EDD

PA = PA = PProcess rocess AAutomation utomation

Fieldbus tailored for the needs of the process industry :MBP “Manchester Coded and Bus Powered” IEC 61158-2Bus poweredIntrinsically safeDevices can be configured over the busSlower speed 31.25 Kbit/s

What is PROFIBUS PA

FISCO

RS485

MBP

Why Use a Fieldbus

Normal Operating Range 4- 20mA

Signals below 4mA indicate instrument failure

0mA indicate open circuit

Signals above 20mA indicate instrument failure

4 – 20mA

Scaling and Accuracy

Fieldbus Motivation

Profibus PA

4- 20mA

Benefits of Using a Fieldbus

Reliable data from Field devicesMore accurate readings with regards to resolutionMore diagnostics to prove instrument functionalityData presented in same formatRemote configurationNuisance alarms. Good

Unchecked

Configuration error

Fault

Maintenance required

Advance maintenance warning

Process error

Communication interrupted

Simulation

Communication good

Device has no diagnosticsDevice passive or notassigned

System Components

Controller

PROFIBUS DP Slaves

PROFIBUS PADP/PA-Link/Coupler

Industrial Ethernet / Fast Ethernet

Profibus DP Physical LayerModified RS485speeds between 9.6kbit/s and 12Mbit/s

Profibus PA Physical LayerManchester Encoded Bus Powered (MBP) (IEC 61158-2)31.25kbits/s

Converting from Profibus DP to PA

Coupler Link + CouplerLow speed connection High speed connection

# Manufacturer specific e.g. PF SK1 93.75Kbits

•Lower Cost•Profibus DP Side is slowed to 45.45kbaud #•Coupler is Invisible to the network•Can only have 124 devices

(DP &PA addresses are combined)

•Profibus DP side can be any speed (12 Meg)•Link Module takes one DP address•Up to 5 couplers•Can have 1000’s devices •Can have faster update times

Simple monitoring Control

4 5 6 7 8 9 4 5 6 4 5 6

5 6

System Components

PA TopologyPA Cables

Spur lengths PA Termination

•2 Terminators at extreme ends

System Components

M12 Connectors T Junctions

Junction Boxes Active Field Distributors

Add new devices

PROFIBUS PA Automatic bus termination

AFD

Bus termination

Enhance lineEnhance ringM

There is no need to reserve spare ports of the AFDs !

AFDAFDAFD AFD

DP/PA Link

Profibus PA Active field distributors AFD

Profibus PA Active field distributors AFD

Increasing availability and simplifying installationRobust Network

Design, Installation and Commissioning12

1. Spur Lines and Lengths must correlate

2. Use Class A, PROFIBUS PA cable and use only one cable manufacturer

3. Total cable length depends on coupler used, can not exceed 1900 meters for none IS

4. Ensure that there is more than 9V at each slave

5. Total number of devices depends on the current draw.

6. Terminate at the extreme ends of the segment

7. Follow recommended grounding practices

8. Intrinsically Safe (IS) design affects maximum spur lengths and total length.

9. Ensure spur length does not exceed the trunk line length

Network Design Tools

•Segment Voltage•Cycle times

Configuration - GSD Files (General Station Data)13

Controller

PROFIBUS PA

Profibus Configuration Tool

The GSD File holds information about the Profibus Device

•Profibus Ident•Supported Baud rates•Diagnostics supported•Module type and data Length

Cyclic CommunicationsDevice -Value / Status

Device Management Tools

Simatic PDM

AMS

Pactware

Fieldcare

ConfigurationParameter interaction

Diagnostics

Device Management Tool

Class 2 Master

PROFIBUS PA

EDD or FDT/DTM

EDD – Electronic Device Description•Device Parameters•Text File•Optimal for devices medium complexity•Standardised EDDL language in IEC 61804-2

FDT – Field Device ToolDTM – Device Type Manager•Device Parameters•Software (DTM Device Manager)•Optimal for highly complex devices

Acyclic CommunicationsParameterisation

Live Demonstrations

Pactware Simatic PDM

Kris HardakerSenior EngineerSite Systems EngineeringUnited Utilities

Jason NichollPhoenix Contact Development and Manufacturing, Inc.Business Development Manager

Contact

Basics of setting up a Profibus PA Network

Jason NichollBusiness Development Manager Phoenix Contact Development and Manufacturing, IncI/O and Networks Business Unit, AmericasTel: 1-800-888-7388 x3720Email: JNicholl@phoenixcon.com

Kris HardakerSenior EngineerSite Systems EngineeringUnited UtilitiesT: 01925 731037 (internal 31037)Email: Kris.Hardaker@uuplc.co.uk

Martin RuckProduct ManagerProcess InstrumentationSiemens Industry GB&IMobile: +44 (0) 7808 824913Email: martin.ruck@siemens.com

Thank you for your time