Intelligent building systems include control systems such as security and monitoring (i.e. closed circuit television or CCTV), safety systems such as fire alarm, environmental conditioning systems such as heating, ventilation, and air conditioning (HVAC), and energy management systems such as internal and external lighting.   The distinct advantage of being able to support multi-product and multi-vendor environments can be realized if these systems, especially those that rely Internet Protocol (IP) communication between devices, are deployed over the same generic structured cabling topology used for telecommunications applications.  Many other low voltage building systems, such as audio/video paging, service/equipment alarms, non-voice/data communications, wireless access points, may also be supported by the telecommunications cabling infrastructure.

ANSI/TIA-862-B “Structured Cabling Infrastructure Standard for Intelligent Building Systems ” was developed by the TIA TR-42.1 Commercial Building Cabling Subcommittee and published in February, 2016. Expanding on the content of ANSI/TIA-862-A, TIA-862-B specifies minimum requirements for intelligent building (previously called building automation system or BAS) cabling to support applications that use Internet Protocol (IP) communication, as well as accommodate other protocols that are typically used between devices.  Specific content addresses recommended cabling topology, architecture, design and installation practices, test procedures, and components.

Significant changes from the previous edition include:

  • The title of the Standard has been revised
  • The term “intelligent building system” replaces “building automation system”
  • Additional guidance on the use of structured cabling for wireless systems, remote powering over balanced twisted-pair cabling, and smart lighting has been added

ANSI/TIA-862-B Terminology

ansi tia 862 terminology


ANSI/TIA-862-B Contents

  • Cabling Subsystem 1
  • Cabling Subsystem 2 and Cabling Subsystem 3
  • Wireless
  • Power Delivery over Balanced Twisted-Pair Cabling
  • Distributor Rooms
  • Zone Enclosure
  • Entrance Facilities
  • Transmission and Field Test Requirements
  • Bonding and Grounding
  • Administration
  • Annexes addressing Power Distribution over Balanced Twisted-Pair Cabling, Separation of Services, Optional Coverage Area Topologies, Examples of Low Voltage Intelligent Building Systems, and Balanced Multipoint Data Bus

Example Intelligent Building System Applications

Access Control · Audio/Video/Multimedia · Broadband Video · CATV and CCTV · Digital Signage · Elevator Control · Energy Management ·  Sensors, Actuators, and Controls · HVAC Control · Infant Security ·  Intercom · Lighting Monitoring and Control · Master Synchronous Clock · Medical Gas Alarms Safety System Monitors and Displays · Nurse Call · Overhead Paging · Personnel Monitoring · Power Monitoring and Control · Staff Emergency Alarms · Telemetry · Time & Attendance · Visual Information Display · Digital Advertising

Why Use Structured Cabling for Intelligent Building System Applications?

  • Proprietary cabling eliminated
  • Common services supported
  • Redundant pathways reduced
  • Low voltage cabling becomes managed
  • Provides migration path to IP devices
  • Asset control
  • Reduced labor/rapid deployment
  • MAC costs reduced (Siemon estimates a 15-38% reduction)
  • Supports energy conservation
  • Infrastructure for low voltage power distribution (e.g. Power over Ethernet or PoE) provided

TIA-862-B Intelligence Building Cabling Infrastructure

ANSI/TIA-862-A BAS Cabling Infrastructure diagram
ANSI/TIA-862-B Intelligent Building Cabling Infrastructure Diagram

Benefits of Zoned Cabling

Zone cabling supports network convergence of data and voice networks, wireless (Wi-Fi) device uplink connections, and a wide range of sensors, control panels, and detectors for lighting, security, and other building communications.  A zoned structured cabling design consists of horizontal cables run from the floor distributor in the telecommunications room to an intermediate connection point that may be housed in a zone enclosure located in the ceiling space, on the wall, or below an access floor, or flooded throughout a floor space.  Cables are then patched from the zone enclosure to equipment and work area outlets. The benefits of a zoned cabling approach include ease of deployment, the ability to facilitate the use of trunking cables, and improved pathway utilization.  With zoned cabling, moves, additions, and changes (MAC work) cost less and are faster and less disruptive in order to support rapid floor space reorganization.

Intelligent Cabling System Media

  • Primarily supported by Category 5e, Category 6, Category 6A, and  Category 7A, copper twisted-pair cabling
  • Copper balanced twisted-pair cabling supports Type 1 and Type 2 PoE and other remote powering applications up to 100 W and a maximum of 1 A per pair
  • Optical fiber solutions may be deployed if consideration is given to the need to power devices
  • TIA-862-A recommends category 6A 4-pair balanced twisted-pair or 2-fiber optical fiber cabling for use in Cabling Subsytem 1
  • Siemon recommends Category 6A F/UTP cabling to support improved heat dissipation and Category 7A to support cable sharing in Cabling Subsystem 1

Click here for Siemon’s “Zone Cabling and Coverage Area Planning Guide” describing best practices for the design of zone cabling and coverage areas supporting intelligent building systems.

Click here for Siemon’s “60W PoE Lighting Applications Planning Guide” describing best practices for the design of zone cabling and coverage areas supporting 60W PoE lighting applications.

Click here for archive information on ANSI/TIA-862-A.

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