What is BMS ?

• Provides a single sea for Monitoring and Control of various parameters in a building for all utilities, integration with Fire & life safety systems, to offer precision control, automation, safety lockouts, energy savings and advanced information management systems to enable take corrective actions – pre and post the events

How do we achieve this ?

• Place intelligent Systems at various locations in a building

• Capture important and critical parameters

• Measure and gather field data through intelligent field devices and sensors etc.,

• Process the applications through DDC technology

• Analyze current performance and take corrective actions

Why do we need BMS ? • Every piece of equipment in a building today

is highly intelligent

• Complex algorithms to be processed

• Multiple buildings and a single seat of access

• Energy Costs are increasing

• Occupants want faster, quality and timely response

• Building functions keep changing

• Buildings are an asset to the owner

• Safer and healthier place for occupants

BACNET / TCP / IP Dedicated LAN

Router

Lighting

Access Control

HVAC

Utility Metering

Other Services

CCTV

Typical Floor

Router

Lighting

HVAC

Utility Metering

CCTV

HV Switch Room

HV Switch gears

Diesel Generator

Fire Panel

Excavation Warning System

IBMS Workstation

LCD Monitors Primary & Secondary Server Web Server

Firewall

Internet

Integrated BMS Architecture

Benefits

• Precision control

• Automatic operations

• Safety Interlock

• Energy savings

• Better Maintenance management

• Good Information Systems

Sub-systems of BAS

• Energy management systems – HVAC – Electrical – Lighting – Misc utilities like hydrant, water systems

• Fire, life safety systems – Fire detection systems – Access control systems – CCTV systems – Perimeter protection systems

What is a typical application in BMS?

• HVAC • Monitor and control high side equipment including chiller through

integration on Modbus /Bacnet for trending of parameters

• Monitoring and control of Pumps and other associated equipment for High side

• Monitoring and control of AHUs, VFDs, IAQ parameters

• Monitoring of CO levels in basement

• Integration of precision air conditioner for server room/switch/hub/IDF rooms

Control Loop

• The process of controlling an HVAC system involves three steps. These steps include first measuring data, then processing the data with other information and finally causing a control action. These three functions make up what is known as a control loop

• achieved through Direct Digital Controllers

PROTOCOLS used in BMS

BACnet

ModBus

LonWorks

Gateway

A device that translates one set of communication rules to another. It connects networks that use different protocols, allowing them to pass data to each other. A gateway is sometimes called an “integrator” or “bridge.”

Integration

Combines several functional systems into one (for example: security, metering, lighting, HVAC, and fire-alarm systems). Signals from these systems travel over the same digital network, and they can be controlled from the same workstation using uniform commands and graphics.

CONTROL FUNDAMENTALS