This document provides an overview of building automation systems (BAS) and their components. It describes the main point types in a BAS including analog, digital, and metering. It also outlines common input and output examples. The document discusses the software used to define the control strategy. Additionally, it shows a typical air handling unit plant layout and components. Finally, it reviews outstation and module options for collecting data from the field level.

1. Introduction to BAS
Systems

2. Specifying / Design of BMS
• Define hardware point types:
– Analogue - within a specified range
– Digital - On / Off or Open / Closed
– Metering - Water, Electricity via a Contact
• Define Control Strategy
– Plant Control Strategy
– Software Interlocks
– Set Values
– Time Parameters
– Alarm Limits

3. Analogue Input
• Analogue Input
– 0-10Vdc
– 0-10 000 Ohms
– 0-20mA
• Examples of A.I.
– Temperature Sensor
– Humidity Sensor
– Pressure Transducer
– Light Level
– Solar Level

4. Analogue Output
• Analogue Output
– 0 to 10Vdc
• Examples of A.O.
– Electronic Actuators Valves / Dampers
– Speed Control
– Remote Setting Signal

5. Digital Input
• Digital Input (Status or Binary Input)
– Clean Contact (Volt Free)
• Examples of D.I.
– Air Flow Switch
– Door Contact
– Water Level Switch

6. Digital Output
• Digital Output (Binary Output)
– A Switch
– 240Vac Rated
– Override Switches
• Examples of D.O.
– Start / Stop Fan
– Start / Stop Chiller
– Switch On / Off Lights

7. Meter
• Metered Input (Pulse Input)
– A High Speed Pulse
– Up to 600 Pulses per Minute
• Examples of Metering
– Water Consumption
– Electricity Consumption
– Number of Persons Passing a Turnstile

8. Software Points
• Used to define the Control Strategy
• Typical Software Point Types
– TIM - Time Schedules
– SPA - Set Point
– CTL - PID Control Algorithms
– ROT - Rotation of Plant
– CAL - Calculation
– PRG - Programmable Freely Defined
– MD - Maximum Demand

9. Typical AHU Plant

10. Typical AHU Plant
D.I. D.I.
D.I.

11. Typical AHU Plant
D.I. D.I.
D.I.
D.O.
D.O.

12. Typical AHU Plant
D.I. D.I.
D.I.
D.O.
D.O.
A.O. A.O.A.O.
A.O.
A.O. A.O.

13. Typical AHU Plant
D.I. D.I.
D.I.
D.O.
D.O.
A.O. A.O.A.O.
A.O.
A.O. A.O.
A.I.
A.I.

14. Select Outstation
• Based on Hardware count
• Match to appropriate Outstation
• Fixed hardware or Modular
• Allow spare capacity for future
expansion

15. UNC 132
• Fixed Configuration
• 8 A.I.
• 10 D.I.
• (2 Meter)
• 6 A.O.
• 8 D.O.
• Total 32 H/W
• 50 Software points
• EEPROM Backup

16. Modules

17. UNC 196 Outstation
• 6 Card Slots
• 16 Channel A.I. Card
• 16 Channel D.I. Card
• 16 Channel A.O. Card
• 16 Channel D.O. Card
• 6 Channel Meter Card
• Door Status Included
• Power status Included
• Total = 6 X 16 + 2 = 98
• Up to 250 points = 152
S/W

19. Network Interface Unit
• Terminals
• Modems
• Bridges
• 3 X RS232
• 1 X LAN

20. Keypad
• Local Interrogation
• Parameter Changes

21. BAS2800+ Systems
Architecture
PST N
X25
ISDN
Copper
802.3
Fi bre
Field*
Automation*
Management*
* As per CEN TC247 standards

22. Building Integration
Solutions