Bms Advanced Manangement Improvement Opps
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Transcript of Bms Advanced Manangement Improvement Opps
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Building Management Systems (BMS) – Seminar 2 –
Advanced Management and Improvement Opportunities
Presented By: Andrew Smit! "eader Building
#ecnologies – A$%$ &oom's Advisory
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Contents
Seminar 2 – Advanced Management and Improvement Opportunities...............................................................3
BMS Types and Scalability............................................................................................................................. 3
Open System Protocols – !at does t!is mean"..........................................................................................3
Open System Protocols – #omparison..........................................................................................................3
$ig! %evel Inter&aces '$%Is(........................................................................................................................... )
Integration *it! ot!er building systems..........................................................................................................)
+istributed Building #ontrol ,et*or-s............................................................................................................)
%icensing and Ot!er %imitations.....................................................................................................................
BM#S Programming......................................................................................................................................
Application Programming – #ontrol %oops................................................................................................
Standard Programming %oops – P/ PI/ PI+...............................................................................................
Advanced Programming &or 0nergy 0&&iciency.......................................................................................... 1
#ontrol %oop Tuning – ecap...................................................................................................................
04tended BM#S 5unctionality.......................................................................................................................
Advanced 6ser Inter&ace 5unctions..........................................................................................................
Trend +ata and Trend %ogging.................................................................................................................
Automated eporting................................................................................................................................ 7
Alarms and Alarm Management................................................................................................................ 7
6pgrades and etro&its.................................................................................................................................. 7
!en to 6pgrade or etro&it.....................................................................................................................7
Partial or Staged 6pgrade Options...........................................................................................................8
Total System eplacement.......................................................................................................................8Opportunity to Set ,e* Standards............................................................................................................8
+ecommissioning and #ommissioning...................................................................................................9:
Advanced Management and Improvement Opportunities – ecap..............................................................9:
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Seminar 2 – Advanced Management and Improvement Opportunities
( BM#S System Arc!itecture
1( BM#S Programming
( 04tended BM#S 5unctionality
7( 6pgrades and etro&its
Seminar 1 – The Basics Explained
1) What is a BMCS?
2) What Does it Do?
3) Benefits
) !perational Considerations
BMS #ypes and Scala'ility
; #an be a single BMS controller to !undreds o& net*or-ed controllers
; $ave a basic %#+ display/ a simple 0B inter&ace t!roug! to &ully animated
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; +ata is s!ared bet*een t!e devices via standard industry protocols
; Standard protocol ensures interoperability bet*een devices
; 0ac! device can be replaced *it! one &rom a di&&erent manu&acturer
*ig "evel Inter+aces (*"Is)
; #ommunication bet*een devices or complete systems over a data net*or-
; 0nable integration bet*een building systems
; eplaces traditional >!ard *ired? connections bet*een devices
; #an provide data &or !undreds o& points over a single connection
; Provides additional in&ormation and e4tended &unctionality
; #ommunications can be custom inter&aces or standard open protocols
; Open system protocols include %on*or-s/ Bacnet or Modbus.
; Standard Open protocols reduce con&iguration/ engineering/ etc
Integration wit oter 'uilding systems
• T!ere are many reasons to integrate t!e BMS *it! ot!er building systemsC
• Single user inter&ace to monitor and control all building services
• #onsolidated Alarm and 5ault management
• 04tended 5unctionality suc! asD
; Single point &or all time sc!eduling &unctions
; 0lectrical load management based on energy system
; #onsolidated a&ter !ours control o& lig!ting and $EA#
; Occupancy control o& $EA# using Security and Access #ontrol
; %ig!ting control in t!e event o& a security breac!
; 04tended secondary &ire mode control o& lig!ting/ security/ etcF
&'ll primar( fire mode controls m$st meet '$stralian standards
,istri'uted Building &ontrol -etwor.s
; Building control &unctions don?t !ave to be limited to being per&ormed *it!in t!e BMS controllers alone
; ,et*or-s/ $ig! %evel Inter&aces '$%I( and integration allo* control &unctionality to be distributed
; +evices include Eariable Speed +rives 'ES+s(/ c!illers and pac-aged and split air conditioning units
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; 0ac! device directly per&orms its o*n specialised control
; Eia t!e $%I/ t!e BMS monitors operational status and allo*s &or ad@ustment o& control parameters suc!
time sc!edules and setpoints
"icensing and Oter "imitations
; !en selecting a BMS consideration s!ould be made *it! regard to all relevant so&t*are and point
licensing/ net*or- limitations and spare capacity
• %icenses associated to t!e number o& points connected to t!e BMS
• %icenses o& con&iguration tools used to con&igure t!e BMS
• +ata net*or- limitations to t!e number o& connected BMS controllers
• System design s!ould allo* &or spare capacity &or &uture e4pansion
• 0B user inter&aces may !ave license restrictions &or connected P#s
• Maintenance issues i& your BMS is not current so&t*are revisions"
BM&S Programming
• Application programming
#anned/ grap!ical/ event and script
• Standard programming loops suc! as PI+/ PI and P
• Advanced programming strategies &or energy e&&iciency
• #ontrol loop tuning and energy optimisation
Application Programming – &ontrol "oops
; T!ere are 2 basic types o& control %oops/ event driven and closed loop.
; 0vent driven control *!ic! triggers &rom a c!ange o& state event suc! as time sc!edules or t!e c!ange
o& state o& an input 'analog or digital(
; #losed loop control continually uses t!e controlled variable as &eed=bac- and ad@usts t!e output device
in direct response.
Standard Programming "oops – P! PI! PI,
; T!e most commonly re&erenced control loop – t!e PI+ loop
>P? G Proportion control band
>I? G Integral gain control
>+? G +erivative term
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• Eariable cooling *ater temperature – only c!ill t!e cooling *ater enoug! to cater &or t!e
building load
&ontrol "oop #uning – 1ecap
• BMS control loop Tuning and Optimisation are not t!e same t!ing
• BMS control loop tuning ensures t!at t!e euipment operates in a stable/ predictable and repeatable
manner.
• Optimisation &ocuses on operating t!e euipment in t!e most energy e&&icient manner *it!out
impacting on t!e tenant com&ort
• T!e &irst stage o& optimisation includes BMS loop tuning.
/tended BM&S 3unctionality
• Advanced 6ser inter&ace &unctions
• Trend data/ sampling rates and numbers o& samples
• Automated reporting
• Alarm and event management
Advanced 4ser Inter+ace 3unctions
• Operator override control and ad@ustment o& BMS points
• #ondition based alarming and alarm management options
• Point trend sampling trend logging/ grap!ing and data e4port
• Automated and customised reporting
• Multiple user access levels/ vie* only to administrator
• Operator activity logging and audit trails
• eal time monitoring o& control logic
#rend ,ata and #rend "ogging
• BMS trending provides a !istorical loo- at plant per&ormance
• Allo*s a retrospective loo- at control &or &ault &inding and &ine tuning
• Trend sampling is set up &or individual BMS points
• Analogue BMS points are usually sampled at intervals
• Binary BMS points are usually sampled on a c!ange o& state '#OE(
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• T!e interval bet*een samples s!ould re&lect t!e rate t!e point c!anges
• Incorrect sampling rates *ill distort results or mas- problems
• Individual point trends can be grouped and displayed logically
•
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en to 4pgrade or 1etro5t
• !en s!ould you consider to upgrade or retro&it"
• Availability o& BMS !ard*are spare parts or tec!nical support
• eliability issues *it! t!e current BMS
• Access to &unctionality to improve energy e&&iciency
• Ma@or building &it out pro@ect or plant upgrade
• Identi&y t!e -ey ob@ectives and drivers
• !at are t!e options/ upgrade/ migration/ &ull replacement
• !at *ill t!e impacts be on my building and tenants"
• Plan *ell in advance/ don?t *ait until t!e last minute
• #onsider getting some independent advice
Partial or Staged 4pgrade Options
• 6pdate to a ne*er version o& t!e current BMS
• Allo*s &or re&res! o& e4isting system at reduced cost
•
Access to ne* &unctions and &eatures
• #an target BMS !ard*are devices at end o& li&e or obsolete
• Opportunity to revie* control strategies and user inter&aces
• or-s can be seuenced *it! tenant c!urn or retro&its
• %ogistically a simpler option t!an &ull replacement
#otal System 1eplacement
• Total replacement o& t!e current BMS !ard*are and so&t*are
• Opportunity to select best available BMS solution &or site
• Some &ield input and output devices can be retained
• ,e* !ig! speed communications net*or- s!ould be included
• %ogistical c!allenges &or a tenanted buildings
• A *ell=developed c!ange over *or-s program is reuired
• euires &ull commissioning o& t!e entire system
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Opportunity to Set -ew Standards
• +on?t @ust copy *!at you already !ave
• Opportunity to revie* all control strategies
• 6pgrade to energy e&&icient control
• Set standards &or ne* user inter&aces/ especially grap!ic displays
• Ta-e time to *or-s!op and document reuirements
• Agree on user inter&aces/ trending/ alarming and reporting
• It?s your system so ta-e an active role
,ecommissioning and &ommissioning
• +ecommissioning is @ust as important as commissioning
• #apture years o& improvements and >en!ancements?
• A c!ance to rig!t t!e *rongs
• #!ance to address t!e underlying issues
• >Point to Point? testing o& all connected &ield euipment
•
So&t*are and !ard*are commissioning
• Seasonal commissioning and tuning
• Blac- Bo4es? and s!ould be utilised to t!eir &ull potential.