EN 16603-20-21:2020
(Main)Space engineering - Interface requirements for electrical actuators
Space engineering - Interface requirements for electrical actuators
In general terms, the scope of the consolidation of the electrical interface requirements for electrical (hold down and release or deployment) actuators in the present ECSS-E-ST-20-21 and the relevant explanation in the handbook ECSS-E-HB-20-21 is to allow a more recurrent approach both for actuator electronics (power source) and electrical actuators (power load) offered by the relevant manufacturers, at the benefit of the system integrators and of the Agency, thus ensuring:
- better quality,
- stability of performances, and
- independence of the products from specific mission targets.
A recurrent approach enables manufacturing companies to concentrate on products and a small step improvement approach that is the basis of a high quality industrial output.
Raumfahrttechnik - Anforderungen an Schnittstellen für elektrische Stellantriebe
This activity will be the joint development of EN 16603-20-21.
This standard identifies the requirements needed to specify, procure or develop the electronics needed for driving release actuators (bot explosive like pyros or nonexplosive like thermal knives) and gives the relevant electrical interface specification, both from source and load perspective.
Ingénierie spatiale - Exigences d'interface pour les actionneurs électriques
D’une manière générale, la consolidation des exigences en matière d'interface électrique pour les actionneurs électriques (à maintien et à déclenchement, ou à déploiement) dans l'actuelle ECSS-E-ST-20-21 et l’explication correspondante qui en est faite dans le manuel ECSS-E-HB-20-21 ont pour but de permettre une approche plus récurrente tant pour les électroniques d’actionneurs (alimentation) que pour les actionneurs électriques (charge) proposés par les fabricants concernés, dans l’intérêt des intégrateurs de système et de l'Agence, assurant ainsi :
- une meilleure qualité ;
- la stabilité des performances ; et
- l’indépendance des produits par rapport à des objectifs de mission spécifiques.
Une approche récurrente permet aux entreprises de fabrication de se concentrer sur les produits et d’adopter une approche d’amélioration par petites étapes à la base d’une production industrielle de haute qualité.
Vesoljska tehnika - Zahteve vmesnika za električne pogone
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2020
Vesoljska tehnika - Zahteve vmesnika za električne pogone
Space engineering - Interface requirements for electrical actuators
Raumfahrttechnik - Anforderungen an Schnittstellen für elektrische Aktuatoren
Ingénierie spatiale - Exigences d'interface pour les actuateurs électriques
Ta slovenski standard je istoveten z: EN 16603-20-21:2020
ICS:
49.140 Vesoljski sistemi in operacije Space systems and
operations
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 16603-20-21
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2020
ICS 49.140
English version
Space engineering - Interface requirements for electrical
actuators
Ingénierie spatiale - Exigences d'interface pour les Raumfahrttechnik - Anforderungen an Schnittstellen
actionneurs électriques für elektrische Aktuatoren
This European Standard was approved by CEN on 24 May 2020.
CEN and 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 CEN-CENELEC Management Centre or to
any CEN and 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 CEN and CENELEC member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium,
Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia,
Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
CEN-CENELEC Management Centre:
Rue de la Science 23, B-1040 Brussels
© 2020 CEN/CENELEC All rights of exploitation in any form and by any means Ref. No. EN 16603-20-21:2020 E
reserved worldwide for CEN national Members and for
CENELEC Members.
Table of contents
European Foreword . 4
Introduction . 5
Scope . 6
Normative references . 7
Terms, definitions and abbreviated terms . 8
3.1 Terms from other standards . 8
3.2 Terms specific to the present standard . 8
3.3 Abbreviated terms. 10
3.4 Nomenclature . 10
Principles . 11
4.1 Standard assumptions . 11
4.2 Verification . 11
Requirements . 12
5.1 Functional general interface requirements . 12
5.1.1 General . 12
5.1.2 Reliability . 12
5.2 Functional source interface requirements . 13
5.2.1 General . 13
5.2.2 Reliability . 13
5.2.3 Commands . 14
5.2.4 Telemetry . 15
5.3 Functional load interface requirements . 16
5.3.1 General . 16
5.3.2 Reliability . 16
5.4 Performance general interface requirements . 16
5.4.1 General . 16
5.5 Performance source interface requirements . 17
5.5.1 General . 17
5.5.2 Reliability . 17
5.5.3 Telemetry . 18
5.5.4 Recurrent products. 18
5.6 Performance load interface requirements . 18
5.6.1 General . 18
5.6.2 Reliability . 19
5.6.3 Recurrent products. 19
Annex A (informative) Requirements mapping . 20
Bibliography . 37
Tables
Table A-1 : Functional general requirements list . 21
Table A-2 : Functional source requirements list . 23
Table A-3 : Functional load requirements list . 30
Table A-4 : Performance general requirements list . 31
Table A-5 : Performance source requirements list . 32
Table A-6 : Performance load requirements list . 35
European Foreword
This document (EN 16603-20-21:2020) has been prepared by Technical
Committee CEN/CLC/TC 5 “Space”, the secretariat of which is held by DIN.
This standard (EN 16603-20-21:2020) originates from ECSS-E-ST-20-21C.
This European Standard shall be given the status of a national standard, either
by publication of an identical text or by endorsement, at the latest by December
2020, and conflicting national standards shall be withdrawn at the latest by
December 2020.
Attention is drawn to the possibility that some of the elements of this document
may be the subject of patent rights. CEN [and/or CENELEC] shall not be held
responsible for identifying any or all such patent rights.
This document has been prepared under a standardization request given to
CEN by the European Commission and the European Free Trade Association.
This document has been developed to cover specifically space systems and has
therefore precedence over any EN covering the same scope but with a wider
domain of applicability (e.g. : aerospace).
According to the CEN-CENELEC Internal Regulations, the national standards
organizations of the following countries are bound to implement this European
Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia,
Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
Introduction
This standard identifies the requirements needed to specify, procure or develop
the electronics needed for driving release actuators (bot explosive like
pyrotechnic devices or non-explosive like thermal knives) and gives the
relevant electrical interface specification, both from source and load
perspective.
The present standard covers explosive or non-explosive actuators electronics
required to comply with single fault tolerance with respect to actuation success.
For a reference architecture description, it is possible to refer to ECSS-E-HB-20-21.
ECSS-E-HB-20-21 includes a clarification of the principles of operation of the
actuator electronics, identifies important issues related to actuators and
explains the requirements of the present standard.
Scope
In general terms, the scope of the consolidation of the electrical interface
requirements for electrical (hold down and release or deployment) actuators in
the present ECSS-E-ST-20-21 and the relevant explanation in the handbook
ECSS-E-HB-20-21 is to allow a more recurrent approach both for actuator
electronics (power source) and electrical actuators (power load) offered by the
relevant manufacturers, at the benefit of the system integrators and of the
Agency, thus ensuring:
• better quality,
• stability of performances, and
• independence of the products from specific mission targets.
A recurrent approach enables manufacturing companies to concentrate on
products and a small step improvement approach that is the basis of a high
quality industrial output.
Normative references
The following normative documents contain provisions which, through
reference in this text, constitute provisions of this ECSS Standard. For dated
references, subsequent amendments to, or revision of any of these publications
do not apply. However, parties to agreements based on this ECSS Standard are
encouraged to investigate the possibility of applying the more recent editions of
the normative documents indicated below. For undated references, the latest
edition of the publication referred to applies.
EN reference Reference in text Title
EN 16601-00-01 ECSS-S-ST-00-01 ECSS system - Glossary of terms
EN 16602-30-02 ECSS-Q-ST-30-02 Space product assurance - Failure modes, effects (and
criticality) analysis (FMEA/FMECA)
EN 16603-33-11 ECSS-E-ST-33-11 Space engineering - Explosive subsystems and devices
Terms, definitions and abbreviated terms
3.1 Terms from other standards
a. For the purpose of this document, the terms and definitions from ECSS-S-
ST-00-01 apply, in particular for the following terms:
1. redundancy
2. active redundancy
3. hot redundancy
4. cold redundancy
5. fault
6. fault tolerance
b. For the purpose of this document, the terms and definitions ECSS-Q-ST-
30-02 apply, in particular for the following terms:
1. failure propagation
c. For the purpose of this document, the terms and definitions from ECSS-
E-ST-33-11 apply, in particular for the following terms:
1. no fire
2. all fire
3.2 Terms specific to the present standard
3.2.1 actuator
component of a machine that is responsible for
triggering the movement of a mechanism or a system
3.2.2 actuator electronics
electronics supplying an actuator
3.2.3 actuators group
set of actuators sharing the same ARM and the same FIRE block
NOTE The term “actuators group” is synonymous
to the term “group” in this standard
3.2.4 all-fire current
current giving a probability of actuation higher than a specified limit, at a
confidence level higher of a specified limit
3.2.5 no-fire current
current giving a probability of actuation lower than a specified limit, at a
confidence level higher than a specified limit
3.2.6 maximum fire current
maximum current allowed in an actuator in nominal conditions
3.2.7 minimum actuation current
all-fire current plus a margin defined by the system integrator
NOTE The current margin is calculated to guarantee
in worst case the required reliability with a
given confidence level when the actuation
time is above the minimum actuation time.
3.2.8 minimum actuation time
actuation time in the all-fire current reference conditions, plus a margin
established by the manufacturer or by the system integrator
NOTE The margin is calculated to guarantee in
worst case the required reliability with a
given confidence level when the actuation
current is above the minimum actuation
current.
3.2.9 inhibition strap
hardware feature that does not allow firing of the actuator
NOTE The inhibition strap typically contains a
connector and one of more wires to ensure
continuity until strap is opened.
3.2.10 curren
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