W05 Basics of setting up PROFIBUS-PA networks Martin Ruck Siemens Jason Nicholl Phoenix Kris Hardaker United Utilities
Basics of setting up a Profibus PA Network Agenda 1. What is Profibus PA 2. Benefits of using a Fieldbus 3. System Components 4. Profibus PA Rules 5. Network Configuration Demonstration Network Configuration Jason Nicholl - Phoenix Pactware FDT/DTM Kris Hardaker - United Utilities Simatic PDM EDD
What is PROFIBUS PA PA = P rocess Automation Fieldbus tailored for the needs of the process industry : MBP Manchester Coded and Bus Powered IEC 61158-2 Bus powered Intrinsically safe Devices can be configured over the bus Slower speed 31.25 Kbit/s RS485 MBP FISCO
Why Use a Fieldbus Scaling and Accuracy 4-20mA 4 20mA Signals above 20mA indicate instrument failure Profibus PA Normal Operating Range 4-20mA Fieldbus Motivation Signals below 4mA indicate instrument failure 0mA indicate open circuit
Benefits of Using a Fieldbus Reliable data from Field devices More accurate readings with regards to resolution More diagnostics to prove instrument functionality Data presented in same format Remote configuration Nuisance alarms. Unchecked Communication interrupted Configuration error Fault Process error Device passive or not assigned Maintenance required Advance maintenance warning Simulation Good Communication good Device has no diagnostics
System Components Industrial Ethernet / Fast Ethernet Controller PROFIBUS DP Slaves DP/PA- Link/Coupler PROFIBUS PA Profibus DP Physical Layer Modified RS485 speeds between 9.6kbit/s and 12Mbit/s Profibus PA Physical Layer Manchester Encoded Bus Powered (MBP) (IEC 61158-2) 31.25kbits/s
Converting from Profibus DP to PA Coupler Low speed connection Link + Coupler High speed connection 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 5 6 4 5 6 7 8 9 4 5 6 4 5 6 Simple monitoring Control # Manufacturer specific e.g. PF SK1 93.75Kbits
System Components PA Cables PA Topology Spur lengths PA Termination 2 Terminators at extreme ends
System Components M12 Connectors T Junctions Junction Boxes Active Field Distributors
Profibus PA Active field distributors AFD DP/PA Link M Add new devices Enhance line Enhance ring Bus termination Automatic bus termination PROFIBUS PA AFD AFD AFD AFD AFD There is no need to reserve spare ports of the AFDs!
Profibus PA Active field distributors AFD Increasing availability and simplifying installation Robust Network
Design, Installation and Commissioning 12 1. Spur Lines and Lengths must correlate Segment Voltage Cycle times 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. Network Design Tools 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
Configuration - GSD Files (General Station Data) Profibus Configuration Tool 13 Controller Cyclic Communications Device -Value / Status PROFIBUS PA The GSD File holds information about the Profibus Device Profibus Ident Supported Baud rates Diagnostics supported Module type and data Length
Device Management Tools EDD Electronic Device Description Device Parameters Text File Optimal for devices medium complexity Standardised EDDL language in IEC 61804-2 FDT Field Device Tool DTM Device Type Manager Device Parameters Software (DTM Device Manager) Optimal for highly complex devices Simatic PDM Device Management Tool Class 2 Master Pactware AMS Configuration Parameter interaction Diagnostics Fieldcare EDD or FDT/DTM PROFIBUS PA Acyclic Communications Parameterisation
Live Demonstrations Jason Nicholl Phoenix Contact Development and Manufacturing, Inc. Business Development Manager Kris Hardaker Senior Engineer Site Systems Engineering United Utilities Pactware Simatic PDM
Contact Basics of setting up a Profibus PA Network Martin Ruck Product Manager Process Instrumentation Siemens Industry GB&I Mobile: +44 (0) 7808 824913 Email: martin.ruck@siemens.com Jason Nicholl Business Development Manager Phoenix Contact Development and Manufacturing, Inc I/O and Networks Business Unit, Americas Tel: 1-800-888-7388 x3720 Email: JNicholl@phoenixcon.com Kris Hardaker Senior Engineer Site Systems Engineering United Utilities T: 01925 731037 (internal 31037) Email: Kris.Hardaker@uuplc.co.uk Thank you for your time