Bms Advanced Manangement Improvement Opps

8/16/2019 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.

Bms Advanced Manangement Improvement Opps

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