Introduction to Building Management System...MMI / HMI / GUI Field Devices 3 Major Topics –Controllers, Networks, System Engineering & 963 \爀䐀椀猀挀甀猀猀漀渀琀栀攀

$Page 1: Introduction to Building Management System...MMI / HMI / GUI Field Devices 3 Major Topics –Controllers, Networks, System Engineering & 963 \爀䐀椀猀挀甀猀猀漀渀琀栀攀$
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Introduction to

Building Management SystemPamela David

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Presenter

Presentation Notes

Curtain raiser for Trend

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AGENDADesigning a BMS

Equipment in a BuildingControl, Monitor, ManageDataPoint Schedule

Components of a Building Management System

Peripheral DevicesControllers

ProtocolsNetworksSupervisors

BMS in EMS

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Definition A Building Management System (BMS) is a computer-based controlsystem, consisting of software and hardware, installed in buildings.

BMS controls, monitors and manages the building’s equipment.

Equipment in a building could include mechanical and electricalequipment such as ventilation, lighting, power systems, fire systems,and security systems.

BMSs can integrate using Internet protocols and open standardssuch as XML, BACnet, LonWorks and Modbus.

What is a BEMS? Building & Energy Management System(BMS, EMS, BAS, IBMS, IBS, BACS, EMCS or Intelligent BuildingControls, Smart Buildings)

Presenter

Presentation Notes

To make the SI’s familiar with Trend Terminologies

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Equipment to BMS

HVAC – Heating Ventilation & Air Conditioning

Mechanical Equipment

Electrical Equipment

Plumbing Equipment

Presenter

Presentation Notes

History of Trend and the migration

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Mechanical Equipment

• Fresh Air Handling Equipment• Various Types of AHU• Heat Recovery Cycle• Exhaust Fans

- Twin Fans, - 2 Speed, - VFD

• Staircase / Lobby Press. Fans• FCUs• VAVs

• Chillers• Primary & Secondary Pumps• Cooling Towers• Condensers

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Plumbing Equipment

• Pumps- Booster- Transfer- Irrigation- Sump- Sewage Pumps- Fire

Water Tank

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Electrical Equipment

• MCC Panels- Incoming / Outgoing Feeders

• Lighting /DB Panel• UPS• Generators• Elevators / Travelators

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3rd Party Systems

• Chiller Plant Manager• Fire Alarm System• Lighting Control System

• Security System• CCTV System• Access Control System

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Equipment schedule

S.NO EQUIPMENT QUANTITY LOCATION CONTROL MONITOR INTEGRATE

HVAC AIR

HVAC WATER

PLUMBING

ELECTRICAL

SYSTEMS

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Control, Monitor, Manage

Control : If the equipment functions under the commands of the BMSMonitor : If the equipment functions on other dictates and BMS only

monitors it.Manage: Trending, run-hour etc

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CONTROL LOOPS1. OPEN LOOP2. CLOSED LOOP

Control, Monitor, ManageCONTROL LOOPS

Input VariableControl LogicOutput Variable

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CONTROLLED VARIABLESTemperaturePressureHumidityWater Flow

CONTROL LOOPSInput VariableControl LogicOutput Variable

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CONTROL MethodsAnalog : 0-10vDC, 4-20mADigital : Volt-free Contacts

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Control, Monitor, ManageCONTROL LOOPS

Input VariableControl LogicOutput VariableAnalog Input

Digital InputAnalog OutputDigital Output

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The control program - strategy

INPUTSAnalogue:-TemperaturePressureHumidityDigital:-RunFaultTripPulse (meter)

STRATEGYPIDOptimiserMathematical functionsLogic

OUTPUTSAnaloguee.g. valve positionDigitali.e ON/OFF

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Control - Air Handling UnitCONTROL LOOPS Input Variable Control Logic Output Variable

Temperature CONTROL LOOP Supply Air Temperature Maintain supply temperature at a set value. Measure SA temp. Compare with set-point change cooling accordingly

Water flow in CHW Pipe via Control Valve + Actuator

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Control - Air Handling UnitCONTROL LOOPS Input Variable Control Logic Output Variable

Supply Fan CONTROL LOOP Real Time Clock in the DDC AHU to run based on time Fan motor Start/Stop


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Monitor- Air Handling UnitMonitoring Points Status / Feedback Alarm Fault

Supply Fan Fan Run Status – DPS / VFC Fan Motor Trip Alarm

Other Parameters H/O/A switch OA temperature Filter – Dirty alarm


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Air Handling Unit – AI, DI, AO, DOSupply Fan Fan Run Status – DPS / VFC Fan Motor Trip Alarm


Temperature CONTROL LOOP Supply Air Temperature Maintain supply temperature

at a set value. Water flow in CHW Pipe via

Control Valve + Actuator


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Equipment schedule

S.NO EQUIPMENT QUANTITY LOCATION CONTROL MONITOR INTEGRATEHVAC AIR

HVAC WATER

PLUMBING

ELECTRICAL

SYSTEMS

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SpecificationsGENERAL

PARTICULAR

Control Schematics

I/O schedule – (Datapoint List /

Sequence Of Operation

Network Schematic

(Equipment Schedule - Quantities)

Presenter

Presentation Notes

History of Trend and the migration

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Air Handling Unit – AI, DI, AO, DOSupply Fan Fan Run Status – DPS / VFC Fan Motor Trip Alarm


Temperature CONTROL LOOP Supply Air Temperature Maintain supply temperature

at a set value. Water flow in CHW Pipe via

Control Valve + Actuator


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Sample - Control Schematic

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Data Point or I/O schedule

S.N. Point Description Point Type Peripheral Details Provided By

DI DO AI AO MEP BMS

Location -

AHU 2nos

Condenser Water System

Total for the Outstation 0 0 0 0

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Data Point Schedule – THE FINAL DOCUMENT

• Converting a Schematic to an Data Point Schedule

• Point Description• Field Devices / Remarks• Supplied By – Contractor / TREND• Third Party Field Devices

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Designing A BMSS.NO EQUIPMENT QUANTITY LOCATION CONTROL MONITOR INTEGRATE

HVAC AIR

HVAC WATER

PLUMBING

ELECTRICAL

SYSTEMS

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S.N. Point Description Point Type Peripheral DetailsProvided

ByDI DO AI AO MEP BMS

Location -AHU 2nos

SA Temperature Sensor 2 Duct Temperature Sensor xModulating CHW Valve Command 2 Valve + Actuator x



Designing A BMS

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ISO 16484 –Building Automation Systems Structure

Supervisor Level

Network Level

Controller Level

Input/Output Level

Presenter

Presentation Notes

Supervisor Level contains supervisory software such as 963 and network displays such as the IQView or NDP. These devices access information from different devices over the network and can be configured with different operator levels of access. IQ System Network carries communications between controllers, supervisors and other Trend devices. The network can operate over a number of different media such as the IQ Current Loop network, Ethernet or Lonworks. If required autodialling can be used to extend the network over a number of different sites. Controller Level is the level where local control of the BMS equipment is performed. The controllers are primarily controlling the HVAC equipment, optional Local Displays such as the SDU can access data from the controller to which it is physically connected. A variety of controllers are available from a small controller designed to control a single plant item such as a VAV or FCU up to a large controller capable of controlling a much larger system. The Field Network carries communication between the controllers and the input/output devices. Some devices are wired directly from the device to the controller, where as others can connect using a field network such as wireless. Input/Output Level contains all the input/output transducers connected to controllers. This includes sensors, valves, relay modules and other interfaces. ISO 16484 is a standard that specifies the requirements and an outline for the overall functionality and engineering of building automation and control systems.

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Topics

Controllersprotocols

Networksprotocols

SupervisorMMI / HMI / GUI

Field Devices

Presenter

Presentation Notes

3 Major Topics –Controllers, Networks, System Engineering & 963 Discuss on the different types, concepts etc.

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Field Devices

OutputsInputs

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Field Devices

AnalogueTemperaturePressureHumidity

DigitalPressure SwitchesVoltfree Contacts

PulsedMeters

Inputs

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Field Devices

Valves

Valve Actuator

Damper Actuators

Variable Speed Drives

Outputs

Presenter

Presentation Notes

Outputs Outputs can be either analogue or digital. Analogue Outputs Supply a signal in the range 0-10V. This signal is adjustable from the software to match the plant e.g. 2-10V. If the plant requires a current signal a 2VID module will convert two 0-10V voltage signals to 0-20mA. Digital Outputs Can be either: Relays mounted in the controller Triacs in the controller Analogue outputs wired to external relays (Trend SRM) Typical output devices include valves actuators and VSD’s

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TYPES of SIGNALS:

MODULATING,

ON/OFF,

Field DevicesOutputs

Presenter

Presentation Notes

Outputs Outputs can be either analogue or digital. Analogue Outputs Supply a signal in the range 0-10V. This signal is adjustable from the software to match the plant e.g. 2-10V. If the plant requires a current signal a 2VID module will convert two 0-10V voltage signals to 0-20mA. Digital Outputs Can be either: Relays mounted in the controller Triacs in the controller Analogue outputs wired to external relays (Trend SRM) Typical output devices include valves actuators and VSD’s

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Topics

Controllers

Networksprotocols


Field Devices

Presenter

Presentation Notes


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Time control for boilers, chillers etc.

Modulating or on/off valves

OutputsAnalogueTemperaturePressureHumidity

DigitalRun / fault

PulsedMeters

Inputs

DDC - Controllermathslogic

PIDAlarms

Times

Logs

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Applications

• AHU’s

• chillers

• boilers

Presenter

Presentation Notes

The flexibility of Trend leads to a vast array of possibilities. Traditionally one would associate BMS with AHU’s, chillers, boilers, pump sets, dampers and so on…. However the picture is much wider than that, and to provide your clients with the very best use of their investment in a BMS, you should consider how far a BMS already reaches and how far it can extend to. CLICK Think lego, think different blocks doing different things, with the variations possible, every application is in reach. There are a number of platforms of controller, the number of inputs and outputs vary, from 10 to max 128 (all monitoring) We can take on smaller projects - little boiler rooms - right up the the very large office towers, hospitals and the like. Part of the skill of the system specialist is to be able to best fit the size / platform and points to each application, ensuring that you get flexible but good value controls solutions.

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DDC - Features• Freely Programmable• Stand-alone function (RTC, graph plots,

alarm generation)• RTC• 32 bit Microprocessor• Peer to peer• 1s cycle time• Networkable over TCP/IP• Web server with security protected

monitor/control • Modular & Expandable• RS232 local supervisor port• Precise and Accurate control

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Web enabled DDC

Presenter

Presentation Notes

Jumper setting for IQ3 controllers

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Terminal unit Controllers

- FCU- With 3 speed fan- With VFD fan

- VAV- Pressure Dependent- Pressure Independent

- Chilled beam

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Unitary DDC - Features

• Freely Programmable• Control FCUs with VFD, heater• Power efficient• Stand-alone function• Peer to peer• IO cycle time < 250 Milliseconds• Networkable over MS/TP or TCP/IP• Web server with security protected monitor/control • Water balancing• Virtual Metering function modules• Heat Meter & Integrator

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Unitary DDC - Features

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Room Control

Light LevelSensor

CO2 SensorWindow Contact

Blind ControlPIR

Detector

Inputs

Lighting dimmer Light switch

RD Display Option

Room Temperature

Room Setpoint

Heating Cooling Dimming control

Blinds Dimming control

Outputs

FAN Occupancy Signal Relay

<250ms Input to Outputfor lighting cycle

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Room Control –with 3rd Party integration

Blind control module on MSTP BUS

Or can be connected directly into the 3rd – party display.

MSTP

Raise/Lower

Raise/Lower

Heating Cooling

Outputs

FAN Dimming control

Lighting control module on MSTP BUS

- OR -

ORDepending

on I/O

3rd party display on MSTP BUS

Room Temperature Room Setpoint

Light Level

Blind Position

Light LevelSensor CO2 Sensor Window

Contact

Inputs

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Room Control : VAV Controllers - Features

• Network (MS/TP)

• Integral Pressure Sensor

• Extra AI,DI,AO,DO

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Topics


Networksprotocols


Field Devices

Presenter

Presentation Notes


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Networks

• Standard networks for the protocols.

• TCP/IP• MS/TP• LON• ModBus• Mbus

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Network - Features

• No. of devices on the network • Length of the network• Speed• Signal strength

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Networks: TCP/IP and Ethernet

• TCP/IP over Ethernet

- Non-Proprietary network developed by IEEE- TCP/IP provides end-to-end connectivity

specifying how data should be formatted, addressed, transmitted, routed and received at the destination.

- the Transmission Control Protocol (TCP) and the Internet Protocol (IP)

Presenter

Presentation Notes

TCP/IP over Ethernet: This is not one particular protocol or standard, it is a collaboration. Ethernet: Ethernet in a general sense defines the network hardware standards. The physical aspects of the network, although strictly speaking there are also software elements to get it to work. IT defines the topology being used, BUS, STAR or RING, the hardware components and media access, if we have a BUS network when is it our turn to communicate. Transport Mechanism: TCP - Transmission Control Protocol: Creates a communications session between two devices. It ensures a connection exists before any data is transferred, when transferred it error checks and sequences the data. UDP - User Datagram Protocol: Classed as an unreliable message delivery protocol. There is no session created for data to transfer, it is just sent and there is no error checking. Used predominantly for network broadcasts. IP – Internet Protocol: An addressing protocol, used for internetworking and is the accepted addressing format used on the internet.

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Networks: LON• LON – Local Operating Network

- Proprietary network developed by Echelon.- Designed for control networks.

• The Echelon network defines:- LonWorks, a network standard. - LonTalk, a communications protocol. - All devices must be LonMark compatible!

• All devices should have a neuron ID.• Approximately 50 devices on a bus

Presenter

Presentation Notes

Local Operating Network LON is a proprietary network owned by the echelon corporation. LON was primarily designed as a control network control, by interconnecting intelligent devices the network can perform processes and application control . While the function of any particular node may be quite simple, the interaction among nodes enables a local operating network to perform complex tasks. The Lon network on its own has limits to data transmission size which can cause scalability problems. The network incorporates both a network standard and a network protocol. The network standard “LonWorks” allows for the the interconnection of devices, a common network, it defines the network hardware of routers, repeaters, terminators and cable/transport media. This network standard allows coexistence. The communications protocol “LonTalk” allows for intercommunications between devices. Although for this to be achieved all devices must be LonMark compliant. Devices have to talk the LON language. This communications protocol allows integration. From Web: The LonTalk Communications Protocol. The LonTalk protocol implements all seven layers of the OSI model, and does so by using a mixture of hardware and firmware on a silicon chip, thus eliminating any possibility of modification. �Echelon is the creator of LonWorks networking technology. A LonWorks system consists of a network of micro-controllers which have peer to peer communications over a variety of different media, including twisted pair, power line and radio frequencies.

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MS/TP

• Master-Slave/Token-Passing• It is cost-effective, relatively slow, serial

communications. • Approximately 50 devices on a bus• Repeaters are used to lengthen the distance

/ quantity of devices.

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Topics


Networksprotocols


Field Devices

Presenter

Presentation Notes


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Displays

• System level- BMS Software- Intelligent Display Panel

• Controller level• Room level

Presenter

Presentation Notes

The beauty of a good BMS is the flexibility…. ….think of the guy who’s been looking after some boilers for 10 years or so, suddenly we put this technical looking BeMS system in front of him with this wizzo display….. Will he use it? - NO. So we need to be able to put the data and BeMS information into a logical format using terms the user can understand. We need to displays that show items in a view corresponding to the users perspective and in terms that they’ll understand. Todays technologies provide you with wonderfully clear, high contrast colour displays with the simplest and most intuitive of interfaces – you own digits! Touch screens are the very simplest of interfaces to use – if you are interested in something – just prod it and see what happens!

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Displays - featuresROOM DISPLAY

- Built-in Temperature Sensor – Room Temperature- SetPoint by Occupant- C/F- Fan Speed / Off- Occupancy Override

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Displays - featuresCONTROLLER DISPLAY

- Single controller display panel- Colour Touch screen interface- Control panel mounted- USB Port- Graphs- Calendar set up- Flash memory to retain settings on loss of power

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Displays - featuresSYSTEM DISPLAY• Full colour touch screen display

• Full network access, see all controllers

• Ethernet connectivity

• Schematic/Graphic capability

• Minimal set up and commissioning

• Flexible and customisable for all users

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Displays - features

Link to Schematics.Thumbnails shown

Specified Timezone.Live Status. Click to edit

Updating Chart

Live value and in-place adjustment of points

Standard features

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SUPERVISOR DISPLAY - SOFTWARE• Secure – multi level passwords• Work Groups • Dynamic Display of Information• Graphical Displays• Customisable – Autocad, jpg, • Adjustments• Data collection• Archive• Graphs, Trending• Alarms• Alarm Retransmission - Email, SMS, Voice, Print • Alarm Management• Web Server• Client / Server Based

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Understanding BMS Architecture

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Topics


Networksprotocols


Field Devices

Presenter

Presentation Notes


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From DataPoint Schedule to BMS Architecture

S.N. Point Description Point Type Peripheral DetailsProvided

ByDI DO AI AO MEP BMS

Location -AHU 2nos

SA Temperature Sensor 2

Duct Temperature Sensor x

Modulating CHW Valve Command 2 Valve + Actuator x



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Putting the “E” in the BEMS

Controllers

Networks-Protocols

Supervisor

Field Devices

Presenter

Presentation Notes


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Documents

Introduction to Building Management System...MMI / HMI / GUI Field Devices 3 Major Topics –Controllers, Networks, System Engineering & 963 \爀䐀椀猀挀甀猀猀 漀渀 琀栀攀

Introduction to Building Management System...MMI / HMI / GUI Field Devices 3 Major Topics –Controllers, Networks, System Engineering & 963 \爀䐀椀猀挀甀猀猀漀渀琀栀攀