karsten fischer - p+f wirelesshart overvie · wirelesshart and with the built-in features as...
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THE PEPPERL+FUCHS GROUPWirelessHART Overview
Karsten Fischer - Global Account Manager Invensys
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Topics
• Introduction to Wireless• Wireless devices are everywhere • Introducing WirelessHART as the first global standard for
industrial applications• HART over Wireless versus WirelessHART• Elements of WirelessHART
– Band and Radio• History of HART / HART specification• WirelessHART for Process Applications• WirelessHART business opportunities
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Introduction to Wireless / WirelessHART
• WirelessHART is one possible wireless standard (protocol) for wireless communication
• Others are– WLAN– Bluetooth– ZigBee– OneWireless– Smart Wireless Solution– …
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Wireless devices in everyday life!
• We use wireless devices in everyday life.
– Devices are simple and often work out of the box
– We sometimes accept poor battery life
– We seem to accept that the reception is bad
– We even seem to accept loss of signal (no access due to bandwidth availability or local obstruction – driving through a tunnel)
– We seem to accept interference from other WiFi users using the same channel as our network
WiFi networks at home and in the office
TV/DVD controllers (Games console controllers)
Car Remote locking
Mobile phone and blue tooth earpiece
RFID identifying tags
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Wireless devices in industry applications!
• Industry has special requirements
– The network needs to be reliable– Adding new participants to a
network needs to be simple– We expect to use standard
configuration tolls such as Handhelds for configuration
– The network needs to be safe to any external intruders or spies
– The network itself should be based on a common international standard (WirelessHART) to ensure that each vendor can provide compatible and interoperable field-devices or adaptors to join the open network
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Open Wireless Standards for Process Automation
• The main end user requirement is:– An OPEN and INTEROPERABLE standard
• Two wireless standards are in discussion for Process Automation– WirelessHART → industrial standard (HART spec 7.1 available)
→ Integrity Test Kit (ITK) available today→ products available today
– ISA SP100 → no industrial standard yet (specification pending)→ no Integrity Test Kit (ITK) available today→ no products available today→ still under development
• At the moment Pepperl+Fuchs supports WirelessHART only. Once the ISA SP100 specification and ITK’s are available we will also support this standard.
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HART over Wireless and WirelessHART
WiFi – etc….
Industry standardWirelessHART
• Expensive to commission
• Expensive to integrate
• Security, Reliability ???
• Use existing tools
• Use existing system
• Security, Reliability built in
HA
RT
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Elements of WirelessHART – Band / Radio
• WirelessHART has selected the License Free 2.4 GHz Industrial Scientific Medical (ISM)-Band as the preferred radio frequency along with the standard radio IEC 802.15.4
433MHz433/915MHz
315/413MHz
315/426MHz
433/868MHz
315/915MHz
2.4 GHz
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Elements of WirelessHART – Band / Radio
• Advantages:– 2.4 GHz is a worldwide usable band without any permission for
using this Bandwidth (rare restrictions apply)– Cheap and freely available Hardware due to WLAN standard
IEC 802.15.4 – Designed for very low power consumption = battery powered
devices
• Disadvantages:– Already used frequency band (WLAN, Bluetooth, ZigBee),
therefore transmission reliability seems to be <100%. With WirelessHART and with the built-in features as specified under release 7.1 the reliability is ensured though.
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History of WirelessHART
Source: HART Communication Foundation
Jun 08HART Spec 7.1
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Compatibility and HART Specification
• Hart specification 7.1 was released in June 2008.
• WirelessHART is a part of HART specification 7.1
• All functionalities supported by HART specification 5 and/or 6 are supported by HART specification 7.1 as well
• Therefore it is ensured that WirelessHART is backwards compatible to previous revisions.
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• HART means: „Highway Addressed Remote Transducer“
From toFrom to
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• Besides of the physical layer as described above, HART standardizes the protocol which is transmitted by the sinus waves
• The protocol offers different services to parameterise, set up, service and maintain field equipment
• New DCS systems use HART IOs (HART FBMs) for continuous monitoring and integration of advanced diagnostic and multi-variable capabilities of smart devices
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Layout of Wired HART Structure
KFD2-HMM-16
ON
13 14 1519 20 21
16 17 18
ON
RS 485
4…20m
A
KFD2-STC4-Ex2
PWR
7 8 9 10 1112 13 14 15
1 23 4 5 6
KFD2-STC4-Ex2
PWR
7 8 9 10 1112 13 14 15
1 23 4 5 6
KFD2-STC4-Ex2
PWR
7 8 9 10 1112 13 14 15
1 23 4 5 6
KFD2-STC4-Ex2
PWR
7 8 9 10 1112 13 14 15
1 23 4 5 6
KFD2-STC4-Ex2
PWR
7 8 9 10 1112 13 14 15
1 23 4 5 6
KFD2-STC4-Ex2
PWR
7 8 9 10 1112 13 14 15
1 23 4 5 6
KFD2-STC4-Ex2
PWR
7 8 9 10 1112 13 14 15
1 23 4 5 6
KFD2-STC4-Ex2
PWR
7 8 9 10 1112 13 14 15
1 23 4 5 6
KFD2-HMM-16
ON
13 14 1519 20 21
16 17 18
ON
RS 485
4…20m
A
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Layout of WirelessHART Structure
RS 485 RS 485WirelessHARTGateway
WirelessHARTAdaptor
Mesh Network Mesh Network
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• WirelessHART is a new enhancement to the HART Technology• Idea
– Keep the well known and proven protocol– Change the physical layer from the modulated sinus on the 4 to 20 mA
loop to radios an create the first wireless standard for ProcessAutomation
⇒ What are the opportunities here?
WirelessHART opportunities
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Question 1Based on market surveys, how many analog field devices are out in the market today?approx.a) 10 Mill.b) 20 Mill.c) 30 Mill.
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Question 2Based on market surveys, how many of those analog field devices are HART enabled?approx.a) 30 %b) 50%c) 70%
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Question 3Based on market surveys, how many of those HART enabled field devices are digitally integrated into DCS systems?approx.a) 10 %b) 30%c) 50%
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WirelessHART is well suited for Process Applications
• Process monitoring– Hard to reach / expensive to
install locations– Full access to multivariable
devices• Asset Management
– Condition monitoring– Configuration database
• Control– Open loop– Closed loop
• Where appropriate for wireless
Type Class Description
Safety 0 Critical
Control
1 Closed Loop regulatory control
2 Closed loop supervisory control
3 Open loop control
Monitoring4 Alerting
5 Data logging and Up/Download
Class Template from ISA
Ideal for retrofit!
Ideal for retrofit!
Ideal for retrofit!
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• Objectives– An Open and Interoperable Standard– As easy as using wired HART– Enable wireless access to existing HART Devices – Use the same configuration, maintenance, diagnostic tools and
procedures– Require little additional training– Worldwide usable– Hardware must be available from the shelf
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Your business opportunitiesIn total the survey showed that approx. 30 Mill. analog field devices are installed in plants worldwide. 70% of these are HART enabled, but only 10% are digitally integrated into a DCS.⇒This indicates a total business opportunity of nearly 20 Mill. field devices that can be digitally integrated into any DCS by enabling them to WirelessHART. ⇒This would allow to
–Enable the DCS to retrieve asset management information from thefield device–Add additional process variables (2nd, 3rd and 4th variable) to the existing PV (from the 4 to 20 mA signal) for further process optimization–“Pimp-Up” your plants by making full use of the field device installed inthe past and by providing more variables into the DCS
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PROTECTING YOUR PROCESS