ISO 16484-2:2004

INTERNATIONAL ISO
STANDARD 16484-2
First edition
2004-08-01
Building automation and control systems
(BACS) —
Part 2:
Hardware
Systèmes de gestion technique du bâtiment —
Partie 2: Équipement
Reference number
©
ISO 2004
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

©  ISO 2004
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2004 – All rights reserved

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16484-2 was prepared by the European Committee for Standardization (CEN) in collaboration with
Technical Committee ISO/TC 205, Building environment design, in accordance with the Agreement on
technical cooperation between ISO and CEN (Vienna Agreement).
Throughout the text of this document, read ".this European Standard." to mean ".this International
Standard.".
ISO 16484 consists of the following parts, under the general title Building automation and control systems
(BACS):
— Part 1: Overview and definitions
— Part 2: Hardware
— Part 3: Functions
— Part 4: Applications
— Part 5: Data communication protocol
— Part 6: Data communication — Conformance testing
— Part 7: Project implementation

Contents                                                       Page
Foreword.v
Introduction.vi
1 Scope .1
2 Normative references.1
3 Terms and definitions .2
4 Abbreviations, acronyms and symbols, .27
5 Requirements.29
5.1 BACS components .29
5.1.1 Hardware components and system functionality .29
5.1.2 System configuration.29
5.1.3 Basic hardware performance criteria .30
5.2 Management devices.30
5.2.1 General .30
5.2.2 Data processing device, server station.31
5.2.3 Peripherals .31
5.2.4 Interfaces.33
5.2.5 Alarm indication and annunciation devices .34
5.3 Control devices.34
5.3.1 General .34
5.3.2 Controller.36
5.3.3 Application specific controller.42
5.4 Field devices .43
5.4.1 General .43
5.4.2 Coupling module .43
5.4.3 Local override/indication device.44
5.4.4 Sensors.45
5.4.5 Actuators.47
5.4.6 Room device .50
5.5 Cabling.50
5.6 System communications .51
5.6.1 General .51
5.6.2 Interconnection of devices within networks.53
5.6.3 Interconnection of devices between networks.53
5.6.4 Communications protocol.54
5.7 Engineering/commissioning tools.54
5.7.1 General .54
5.7.2 Engineering tools .54
5.7.3 Commissioning tools .54
Annex A (informative) General safety requirements and environmental conditions.56
A.1 General .56
A.2 National annexes .56
Annex ZA (normative)  Normative references to international publications with their corresponding
European publications.57
Bibliography.58

iv © ISO 2004 – All rights reserved

Foreword
This document (EN ISO 16484-2:2004) has been prepared by CEN /TC 247, "Building Automation, Controls and
Building Management", the secretariat of which is held by the SNV, in collaboration with ISO/TC 205 "Building
Environment Design".
This document has to be implemented at national level, either by publication of an identical text or by
endorsement, by February 2005, and conflicting national standards have to be withdrawn by February 2005.
The EN ISO 16484-2 is part of the EN ISO 16484 series of International Standards under the general title
Building Automation and Control Systems (BACS), which will comprise the following parts:
Part 1: Overview and Vocabulary
Part 2: Hardware
Part 3: Functions
Part 4: Applications
Part 5: Data communication - Protocol
Part 6: Data communication - Conformance testing
Part 7: Project specification and implementation

In this standard, Annex A: General safety requirements and environmental conditions and the Bibliography are
both informative.
The Annex ZA Normative references to international publications with the corresponding European publications,
is normative.
NOTE  National annexes may contain information provided for easier implementation, e.g. an alphabetical index or national
footnotes.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark,
Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg,
Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United
Kingdom
Introduction
This series of standards is intended for design of new buildings and retrofit of existing buildings for an
acceptable indoor environment, practical energy conservation and efficiency.
The application of this series of standards for BACS is envisaged as follows:
- the environmental design for all building types requires complex methods for automation and control. The
functional integration of services other than HVAC e.g. lighting and electric power distribution control, security
control, transportation, maintenance management or facilities management is a general task for all parties
employed to develop an integrated multi-application system. This integration allows the user to take advantage
of synergies between the different applications. This standard will give guidance to architects, consultants and
contractors as well as to users on how to share such resources,
- the innovation cycles between devices, systems and networks vary. To make it possible to add and to change
existing devices, and extend the building automation and control network, several interfaces both proprietary and
standardized are defined between the BACS network and the other systems. A manufacturer can design a
product, both to meet his specific marketing objectives and to give the option to integrate that special device into
a multi-application BACS. Interfaces are also defined in appropriate parts of this standard along with the
necessary communications protocol and conformance test required to support the inter-working of devices,
- a manufacturer, a systems house, or an electrical or mechanical contractor can assemble an implementation of
a building automation and control system,
- the application of this standard is not to standardize the hardware and software design or the architecture of a
System, but to define the process for the creation of project specifications, where functionality and the quality of
the
...