Building Management System - BMS 2

8/12/2019 Building Management System - BMS 2

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IndexHistory of controlsBas- definitionWhats basWhy basComponents of basHvacHigh sideLow side controlsControl logicsSystem architectureSensorsControllersSoftwareWebcontrolsProtocols and communication interfacesBasic designingWhat to look for in executing a projectIO summaryController designSample exerciseQ&A


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Control system

Definition


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Control schematic

Control System

Feedback

Input Output


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Whats controls ?

The intelligence behind themechanical systems

Its like the human mind whichprocesses millions of inputs everyminuteHuman brain is the oldest and bestcontrol system


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History of controls ?

Electrical controls- 1970s Electronic discrete controls- 1980s

Digital controls - 1990s Open protocol controls- 2000


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Why BMS ?

To provide one point monitoring andcontrol of all utilities and integrationwith Fire life safety systems to offerprecision control, automation, safetylockouts, energy savings and betterinformation systems


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Benefits

Precision controlAutomatic operations

Safety InterlockEnergy savingsBetter Maintenance management

Good Information Systems


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Sub-systems of BASEnergy management systems

HVACElectrical

LightingMisc utilities like hydrant, water systems

Fire life safety systemsFire detection systemsAccess control systemsCCTV systemsPerimeter protection systems


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FeaturesHVACMonitor and control high side equipment including chillerthrough integration on Modbus/Bacnet for trending ofparameters

Monitoring and control of Pumps and other associatedequipment for High sideMonitoring and control of RA temp , control of AHU controlvalve, on/off operations in time schedule programs,monitorfilter clean/dirty conditions, control of VFD if provided,firestatus integration, fire damper control if motorized and

monitoring the IAQ parameters for each level in 2 locations.Monitoring of CO levels in basement and control of fans inthe basement for ventilation and exhaust.Integration of precision air conditioner for serverroom/switch/hub/IDF rooms


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FeaturesElectricalMonitor transformer temperatures andtrips, breaker status ,monitor various

parameters like V, A, PF, Freq for incomerand various important outgoing feedersIntegration of DG PLC and monitoringcritical engine and alternator parameters

Integration of UPS for monitoring all criticalparameters


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Features

LightingControl of lighting in general office

areas based on time schedule andoccupancy override facility withintegration to the EPABX system.Control of lights externally based onlux levels , time schedule programs


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Features

Plumbing, Sanitary & Fire fightingMonitoring and control of levels in

various tanks and control of pumpsTime schedule control for landscapepumpsMonitoring main pumps, jockeypumps, Engine driven pumps


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Proposed Design

System Architecture based on TCP/IPwith 2 layers of architecture controllers and Head end based onIndustry standard open protocol likeModBus/BacnetSystem covering the following

- HVAC- Lighting internal Workstations/Architectural- Electrical utilities like power measurement, breakers- Indoor air quality- Misc Equipments like pumps , levels etc.


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Proposed design

Integration with following equipmenton Bacnet or Modbus

Fire detection Panels

DGs UPSBreakersVFDs Precision AC UnitsChillers


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Proposed designMaintenance Management software for pro-activemaintenance and Facility ManagementMulti-user software with facility to monitor andoperate from multiple workstationsHi-speed controllers with freely programmingcapabilityBMS Network integrated with facility wide LANWeb based capability using IP address for multi-

location monitoring and control- for e.g from UKSMS Based alarming utility for messaging of keyalarms to a mobile phone and facility to escalate


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Components of BAS

Input devicesOutput devices

ControllersHead end Workstation


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Input DevicesTypesAnalog Input- Any input that varies withtime for e.g. Temperature, humidity ,

PressureDigital Input- Any input that works on atwo state mode ( 0 or 1)like on or off ,clean/dirty.

Pulse input- Any input incremental innature and totalizes over a period of time ,KWH meter, water meter


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Controllers

Microprocessor based with real timeclock and memory

Programmable for various controllogics and switching tablesCapability to communicate with othercontrollers on communicationprotocolStand alone operations


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Output devices

TypesAnalog output- output that varies

with time e.g 3 way valve , VFDDigital out put- on/off output e.g fanon/off , compressor on/off


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System Architecture drawing


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BACtalk Visual Logic ControllersCapable 10-bit universal inputsInteroperable Fully BACnet-compliant

on MS/TP LAN at up to 76.8 Kbps.Fast Internal logic loop of 100 msec.


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Visual Logic Controllers

Reliable Extensive onboard filtering,with all program data backed up innon-volatile EEPROM.

Versatile Fully programmable forcentral plant systems, air handlingunits, clean rooms, fume hoods andother control and process equipment.


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VLC 16160IC316 Universal Inputs16 Binary Outputsgrouped into 4 groups of

four binary triacoutputs, each with anisolated power source,making it ideal forcontrol of packagedequipment


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VLC 1600C3

16 UniversalInputs


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Visual Logic Programming


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FeaturesHVACMonitor and control high side equipment including chillerthrough integration on Modbus/Bacnet for trending ofparameters

Monitoring and control of Pumps and other associatedequipment for High sideMonitoring and control of RA temp , control of AHU controlvalve, on/off operations in time schedule programs,monitorfilter clean/dirty conditions, control of VFD if provided,firestatus integration, fire damper control if motorized and

monitoring the IAQ parameters for each level in 2 locations.Monitoring of CO levels in basement and control of fans inthe basement for ventilation and exhaust.Integration of precision air conditioner for serverroom/switch/hub/IDF rooms


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FeaturesElectricalMonitor transformer temperatures andtrips, breaker status ,monitor various

parameters like V, A, PF, Freq for incomerand various important outgoing feedersIntegration of DG PLC and monitoringcritical engine and alternator parameters

Integration of UPS for monitoring all criticalparameters


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Features

LightingControl of lighting in general officeareas based on time schedule andoccupancy override facility withintegration to the EPABX system.Control of lights externally based onlux levels , time schedule programs


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Features

Plumbing, Sanitary & Fire fightingMonitoring and control of levels invarious tanks and control of pumpsTime schedule control for landscapepumpsMonitoring main pumps, jockeypumps, Engine driven pumps


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Proposed Design

System Architecture based on TCP/IPwith 2 layers of architecture controllers and Head end based onIndustry standard open protocol likeModBus/BacnetSystem covering the following

- HVAC- Lighting internal Workstations/Architectural- Electrical utilities like power measurement, breakers- Indoor air quality- Misc Equipments like pumps , levels etc.


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Proposed design

Integration with following equipmenton Bacnet or Modbus

Fire detection Panels

DGs UPSBreakersVFDs Precision AC UnitsChillers


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Proposed designMaintenance Management software for pro-activemaintenance and Facility ManagementMulti-user software with facility to monitor andoperate from multiple workstationsHi-speed controllers with freely programmingcapabilityBMS Network integrated with facility wide LANWeb based capability using IP address for multi-

location monitoring and control- for e.g from UKSMS Based alarming utility for messaging of keyalarms to a mobile phone and facility to escalate


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Standards

UL 817NFPA 72e

IS2189UL 865UL 555


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What is Web enabled BASA BAS which utilizes the internet to providereal-time access to building personnel tomonitor ,control with necessary web servers,front end software's and a static IP addressInternet control goes beyond the simpleaccess. Internet control automates facilitiesHVAC and processes while expanding thescope to enterprise level,thus converting BASto MIS


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Internet and BASA Web based presentation of dynamicbuilding information allows not onlyoperators to operate from anywhere with fullfunctionality , it allows interaction withcontractors, consultants, equipmentsuppliers to provide feed forwardinformation to the building operation matrixIt provides upper management with bottomline oriented screens to provide dynamicproof of the success or failure of buildingperformance


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Internet based BAS

What has helped is the standardization ofdata communications like TCP/IPIt is the convergence of IT and BAS

Web based training for operating staffResource library for the buildingMultiple locations open system help inintegrationHTML for dynamic data


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AdvantagesStandard web browser like IE or NN as ainterfaceNo proprietary software required

High level of securityNo multiple copies of s/w requiredUnlimited usersCompanies with multi-locations facilities

Unifies users , consultants , contractors tostudy the system performance and fine tune


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Building.com

The concept of creating a website foreach complex allows all criticalbuilding information to be located inone organized place for all concernedto access.

The website is a focus point for energy

performance,client comfort andcomplaints.


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Building.comMany large buildings have a .com addressVery powerful and almost becoming a standard in USReal-time streaming video data to show constructionprogress

Helps bidding process all relevant drawings,documents for owners, bidders, consultants availableon the web siteLarge buildings can sell internet access by leasing ISDNlines/ T1 connects and distributing to many users


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Building.com

Buildings could sell e-mail ID , serverspaceIt allows a transparent system for tenant

billing systemsEmergency breakdown communications,shutdowns, special security proceduresAccess to real time temp, IAQ data.,

virtual thermostats and lighting interfacesIt is a building operations andmaintenance tool


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WEBtalk

Access your building using anInternet browser

Increase building managementefficiency

Ease to use, install,maintain


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The End

End of session 1Session 2- BMS sample designexercise

Building Management System - BMS 2

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