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Transcript of Controls Integration and a Path to More Efficient · PDF fileControls Integration and a Path...
![Page 1: Controls Integration and a Path to More Efficient · PDF fileControls Integration and a Path to More ... Sr. Controls Engineer, Enovity, Inc. Presentation Overview ... ‘Open’ protocols](https://reader034.fdocuments.us/reader034/viewer/2022051523/5a78b2327f8b9ab8768ee985/html5/thumbnails/1.jpg)
Controls Integration and a Path to More Efficient Buildings
Jonathan Soper, PEPrincipal, Enovity, Inc.
Tim Fackler, MCPSr. Controls Engineer, Enovity, Inc.
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Presentation Overview
What is Controls Integration?
The Need for Advanced Integration
What Makes Advanced Integration Work
Case Studies
Wrap Up
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What is Controls Integration?
Sharing of Information from Multiple Sub Systems
Consolidation of Information into a Common Front End
Direct Digital Controls (DDC) Provided a Major Advance for the Control of HVAC Systems
Next Stage of Development is Wide Area Integration of DDC Systems
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Different Generations of DDC System
‘First’ Generation – 1980s• Programmable devices, remote alarming• Slower & smaller networks, serial & modems• DOS based
‘Second’ Generation – Early 1990s• Graphical front end and windows based• Faster networks, trending, MSTP & ARCNET
‘New’ Generation – Mid to Late 1990s• ‘Open’ protocols such as BACnet & LONworks• Web based, Ethernet
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Older Proprietary Systems Lack Functionality
Older DDC Systems Lack Many Features• Trending difficult
• Mixed with pneumatics & limited control
• Insufficient control points
• Many are still DOS based
• Diagnostic features other than basic alarms are unavailable
• Few options for remote access
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Proprietary Systems Prevail
Owners of Multiple Buildings have Multiple Different DDC Systems
• Difficult procurement process• Numerous licenses needed• Building operators require knowledge of different
systems
Older DDC Systems Can be Expensive to Upgrade
• Prioritization of budgets for controls upgrades• One system, one vendor, one price• Ten year cycle
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Components of a Successful Wide Area Integration
Use of Open Protocols• Control systems with open protocols easier to
integrate
Reliable and Functional IT Network• Select the right IT solution, select correct router ports.
Robust Hardware• Hardware is the interface between the native controls
system and the common front end; correct selection is critical.
Experienced Integrator• Integrator must have experience of native control
systems, IT systems and integration technology.
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Open Protocols – Quick ReviewBuilding Automation and Control Networking (BACnet) • BACnet over IP• BACnet over Ethernet• BACnet over MSTP
LonWorks (LON)• Lonworks
Modbus• Modbus RTU• Modbus ASCII• Modbus TCP
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Commonly Used Integration Systems
Java Application Control Engine (JACE)• Produced by Tridium, multiple connection types,
multiple drivers, Niagra AX language open source & write custom drivers.
Richards Zeta• Multiple devices depending on application or protocol,
mediator is main integration device, translation file needed.
Field Server• Multiple drivers, used a lot in non-HVAC systems
Long Established Controls Manufacturers• For example ALC Webctrl
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IT Network TypesExclusive IT LAN• Highly secure, total control, dedicated bandwidth, fast,
expensive.
Virtual Local Area Network (VLAN)• Secure, use existing infrastructure, dedicated
bandwidth, less expensive than exclusive
Shared Public or Private LAN• Answer to IT Dept., use existing network and share
bandwidth, less expensive than exclusive or virtual
Dial Up• Most control systems support modems, very slow,
connect to one system at a time, cheap
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An Ideal Scenario
Readily Accessible Information on Building System Performance
Remote Control of Building Systems
Competitive Environment to Deliver Highest Quality Control Systems
Consistent and Recognizable Graphics & Point Naming Convention
HVAC System Sequences that Result in Optimal System Performance on an Ongoing Basis
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Two Case Studies
Menlo Park Campus, GSA• Campus of several buildings• Integration of four ‘First’/ ‘Second’ generation control
systems into common Tridium AX front end.
GEMnet (Government Energy & Maintenance Network) Expansion
• Expansion of an existing wide area network covering around 100 buildings in four States.
• Existing wide area network integrates ten (10) buildings using ALC Webctrl.
• Integration of the control systems at eighteen (18) facilities into Tridium AX front end.
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Menlo Park Campus Site Plan
A mesh, wireless network was established between buildings 1, 3 and 15. Building 15 is the location of the Tridium server at this site.
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Menlo Park – Buildings 15 and 20
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Menlo Park – Buildings 1 and 2
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Menlo Park – Buildings 3 and 3A
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Improved System for Building Operators
All Five Buildings Now Monitored from One Front End
Setpoints, Schedules, Alarms, Trending from One Front End
Common Set of Graphics
New Building Operators Require Less Training
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Menlo Park Sample Tridium Graphics I
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Menlo Park Sample Tridium Graphics II
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Menlo Park Sample Tridium Graphics III
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Lessons Learned – Menlo Park Campus
Existing Network 8000 Network Issues • Additional JACE panels were needed in Building 15.
Commission System• Thorough point to point checks needed
Building Operator Training• Coordination with building engineers and client critical
through integration process
Wireless Network Required a Lot of Troubleshooting
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GEMnet Integration Phase II
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GEMnet Integration Phase 2 Overview
City Buildings per Site Proprietary Systems Hardware Installed Final Protocols Used
Sacramento 4 Johnson Mediator, JACE BACnet/IP, Niagara
San Francisco 1 Niagara None SQL
Fresno 1 Invensys Mediator BACnet/IP
Van Nuys 1 Delta Mediator BACnet/IP
Los Angeles 3 Delta, CSI JACEBACnet MS/TP, ModBus/RTU,
Niagara
Santa Ana 1 ALC None BACnet/IP
San Diego 1 LonWorks None SQL
Calexico 1 LonWorks None ModBus/RTU
Menlo Park 5 CSI, Barber‐Colman, Johnson JACE, Server for operator use Niagara
San Jose 2 Delta JACE BACnet MS/TP, Niagara
Reno 1 Johnson Mediator BACnet/IP
Las Vegas 1 Delta JACE BACnet MS/TP, Niagara
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Typical Layout for a JACE
SacramentoMenlo ParkSan JoseLos AngelesLas Vegas
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Typical Richards-Zeta Mediator Connection
RenoSacramentoFresno Van Nuys
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Typical Modbus, BACnet or SQL Connection
San FranciscoSanta AnaSan DiegoCalexico
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Lessons Learned – GEMnet Phase IIVerify Network is Fully Functional Within Each Building• FAA building in LA did not have good ethernet
connection between BAS & router.
Firewall Configurations• Had to work with GSA network administrator to
understand firewall configurations and open ports
Individual Site Hardware Requirements • What works in theory does not always work in
practice; native BACnet site needed JACE
Verify Existing Open Protocols• One site was Modbus RTU; master/slave not defined
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Power of the Fully Integrated System
Central Point for Initiating Demand Reduction
Collect Trend Data for Multiple Facilities on One Server
Fault Diagnostics & Monitoring Based Commissioning Easier to Implement
System Performance at Multiple Facilities Can be Monitored from Any Location
New Facilities Can be Remotely Commissioned
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Contact Us
Jonathan Soper, PEPrincipal
415.974.0390 [email protected]
Tim Fackler, MCPSr. Controls Engineer
415.974.0390 [email protected]
www.enovity.com