Letter symbols to be used in elecrical technology - Part 6: Control technology

This part of IEC 60027 is applicable to control technology. It gives names and symbols for quantities, signals and functions, and their units.

Formelzeichen für die Elektrotechnik - Teil 6: Steuerungs- und Regelungstechnik

Symboles littéraux à utiliser en électrotechnique - Partie 6: Technologie de commande et de régulation

La présente partie de la CEI 60027 est applicable aux technologies de commande et de régulation. Elle donne les noms et symboles des grandeurs, signaux et fonctions, ainsi que leurs unités.

Črkovni simboli za uporabo v elektrotehnologiji - 6. del: Krmilna tehnologija (IEC 60027-6:2006)

General Information

Status
Published
Publication Date
24-Oct-2007
Current Stage
6060 - Document made available
Due Date
25-Oct-2007
Completion Date
25-Oct-2007

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Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 60027-6:2008
01-januar-2008

ýUNRYQLVLPEROL]DXSRUDERYHOHNWURWHKQRORJLMLGHO.UPLOQDWHKQRORJLMD ,(&



Letter symbols to be used in elecrical technology - Part 6: Control technology (IEC 60027

-6:2006)

Formelzeichen für die Elektrotechnik - Teil 6: Steuerungs- und Regelungstechnik (IEC

60027-6:2006)

Symboles littéraux a utiliser en électrotechnique - Partie 6: Technologie de commande et

de régulation (IEC 60027-6:2006)
Ta slovenski standard je istoveten z: EN 60027-6:2007
ICS:
01.060 9HOLþLQHLQHQRWH Quantities and units
01.075 Simboli za znake Character symbols
29.020 Elektrotehnika na splošno Electrical engineering in
general
SIST EN 60027-6:2008 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
EUROPEAN STANDARD
EN 60027-6
NORME EUROPÉENNE
October 2007
EUROPÄISCHE NORM
ICS 01.060 Partially supersedes HD 60027-2:2003
English version
Letter symbols to be used in electrical technology -
Part 6: Control technology
(IEC 60027-6:2006)
Symboles littéraux Formelzeichen für die Elektrotechnik -
à utiliser en électrotechnique - Teil 6: Steuerungs- und Regelungstechnik
Partie 6: Technologie de commande (IEC 60027-6:2006)
et de régulation
(CEI 60027-6:2006)

This European Standard was approved by CENELEC on 2007-10-01. CENELEC members are bound to comply

with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard

the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on

application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other

language made by translation under the responsibility of a CENELEC member into its own language and notified

to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the

Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60027-6:2007 E
---------------------- Page: 2 ----------------------
EN 60027-6:2007 - 2 -
Foreword

The text of document 25/331/FDIS, future edition 1 of IEC 60027-6, prepared by IEC TC 25, Quantities

and units, and their letter symbols, in co-operation with the International Federation of Automatic Control

(IFAC), was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as

EN 60027-6 on 2007-10-01.
This European Standard supersedes Clause 11 of HD 60027-2:2003.
In comparison with Clause 11 of HD 60027-2:2003 the following has been altered:

– the number of physical quantities and of their symbols listed in this European Standard has been

increased significantly. New clauses for general quantities, for general functions, for characteristic

quantities of the step response, for mapping functions and their quantities, and for parameters of

transfer elements and control loops have been included;

– the hitherto existing series of reserve symbols for variable quantities of the control loop has been

deleted. Four symbols out of this series have been used as new symbols for main quantities;

– the presentation of the denotation of some mathematical concepts specific to the field formerly given

in 11.4 has been removed to the column “remarks” of the relevant tables.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2008-07-01
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2010-10-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice

The text of the International Standard IEC 60027-6:2006 was approved by CENELEC as a European

Standard without any modification.
__________
---------------------- Page: 3 ----------------------
- 3 - EN 60027-6:2007
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.

NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

applies.
Publication Year Title EN/HD Year
IEC 60027-1 1992 Letter symbols to be used in electrical EN 60027-1 2006
technology -
Part 1: General
IEC 60027-2 2005 Letter symbols to be used in electrical EN 60027-2 2007
technology -
Part 2: Telecommunications and electronics
IEC 60050-101 1998 International Electrotechnical Vocabulary – –
(IEV) -
Part 101: Mathematics
IEC 60050-351 2006 International Electrotechnical Vocabulary – –
(IEV) -
Part 351: Control technology
ISO 80000-3 2006 Quantities and units - – –
Part 3: Space and time
ISO 31-5 1992 Quantities and units - – –
Part 5: Electricity and magnetism
ISO 31-11 1992 Quantities and units - – –
Part 11: Mathematical signs and symbols for
use in the physical sciences and technology
ANSI/IEEE 280 1985 Letter Symbols for Quantities Used in – –
Electrical Science and Electrical Engineering
EN 60027-1 is based on IEC 60027-1:1995 (Reprint) + A1:1997.
---------------------- Page: 4 ----------------------
NORME CEI
INTERNATIONALE
IEC
60027-6
INTERNATIONAL
Première édition
STANDARD
First edition
2006-12
Symboles littéraux à utiliser en électrotechnique –
Partie 6:
Technologie de commande et de régulation
Letter symbols to be used in
electrical technology –
Part 6:
Control technology
© IEC 2006 Droits de reproduction réservés ⎯ Copyright - all rights reserved

Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any

utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including

électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from

microfilms, sans l'accord écrit de l'éditeur. the publisher.

International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland

Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch

CODE PRIX
PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue
---------------------- Page: 5 ----------------------
60027-6 © IEC:2006 – 3 –
CONTENTS

FOREWORD...........................................................................................................................5

1 Scope...............................................................................................................................9

2 Normative references .......................................................................................................9

3 Principles .........................................................................................................................9

4 General quantities ..........................................................................................................11

5 General functions ...........................................................................................................15

6 Characteristic quantities of the step response ................................................................17

7 Mapping functions and their variable quantities ..............................................................19

8 Parameters of transfer elements and control loops .........................................................21

9 Variable quantities of the control loop (open-loop control system and closed-loop

control system)...............................................................................................................25

Annex A (informative) Functional diagrams ..........................................................................27

Figure A.1 – Open-loop control system; guidance system .....................................................27

Figure A.2 – Closed-loop control system; feedback control system .......................................27

Figure A.3 – System description using state variables ..........................................................29

Table 1 – General quantities .................................................................................................11

Table 2 – General functions ..................................................................................................15

Table 3 – Characteristic quantities of the step response .......................................................17

Table 4 – Mapping functions and their variable quantities .....................................................19

Table 5 – Parameters of transfer elements and control loops ................................................21

Table 6 – Variable quantities of the control loop....................................................................25

---------------------- Page: 6 ----------------------
60027-6 © IEC:2006 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY –
Part 6: Control technology
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with an IEC Publication.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 60027-6 has been prepared by IEC technical committee 25:

Quantities and units, and their letter symbols, in co-operation with the International Federation

of Automatic Control (IFAC).

This standard cancels and replaces IEC/PAS 60027-6 published in 2004. This first edition

constitutes a technical revision.
The text of this standard is based on the following documents:
FDIS Report on voting
25/331/FDIS 25/341/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.
This part of IEC 60027 is intended to replace Clause 11 of IEC 60027-2:2000.
---------------------- Page: 7 ----------------------
60027-6 © IEC:2006 – 7 –
In comparison with Clause 11 of IEC 60027-2:2000 the following has been altered:

– the number of physical quantities and of their symbols listed in this International Standard

has been increased significantly. New clauses for general quantities, for general functions,

for characteristic quantities of the step response, for mapping functions and their

quantities, and for parameters of transfer elements and control loops have been included;

– the hitherto existing series of reserve symbols for variable quantities of the control loop

has been deleted. Four symbols out of this series have been used as new symbols for

main quantities;

– the presentation of the denotation of some mathematical concepts specific to the field

formerly given in 11.4 has been removed to the column “remarks” of the relevant tables.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

The committee has decided that the contents of this publication will remain unchanged until

the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in

the data related to the specific publication. At this date, the publication will be

• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 8 ----------------------
60027-6 © IEC:2006 – 9 –
LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY –
Part 6: Control technology
1 Scope

This part of IEC 60027 is applicable to control technology. It gives names and symbols for

quantities, signals and functions, and their units.
2 Normative references

The following referenced documents are necessary for the application of this document. For

dated references, only the edition cited applies. For undated references, the latest edition of

the referenced document (including any amendments) applies.

lEC 60027-1:1992, Letter symbols to be used in electrical technology – Part 1: General

IEC 60027-2:2005, Letter symbols to be used in electrical technology – Part 2:
Telecommunications and electronics

IEC 60050-101:1998, International Electrotechnical Vocabulary – Part 101: Mathematics

IEC 60050-351:2006, International Electrotechnical Vocabulary – Part 3
...

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