SIST EN ISO 25197:2020

SLOVENSKI STANDARD
01-julij-2020
Nadomešča:
SIST EN ISO 25197:2018
Mala plovila - Električni/elektronski regulacijski sistem za krmarjenje, prestavljanje
in pogon (ISO 25197:2020)
Small Craft - Electrical/electronic control system for steering, shift and throttle (ISO
25197:2020)
Kleine Wasserfahrzeuge - Elektrische/elektronische Regelungssysteme für Steuerung,
Schaltung und Antrieb (ISO 25197:2020)
Petits navires - Système électrique/électronique pour le contrôle de la direction, de
l'inverseur et des gaz (ISO 25197:2020)
Ta slovenski standard je istoveten z: EN ISO 25197:2020
ICS:
47.020.60 Električna oprema ladij in Electrical equipment of ships
konstrukcij na morju and of marine structures
47.080 Čolni Small craft
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 25197
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2020
EUROPÄISCHE NORM
ICS 47.080 Supersedes EN ISO 25197:2018
English Version
Small craft - Electrical/electronic control systems for
steering, shift and throttle (ISO 25197:2020)
Petits navires - Systèmes électriques/électroniques Kleine Wasserfahrzeuge - Elektrische/elektronische
pour le contrôle de la direction, de l'inverseur et des Regelungssysteme für Steuerung, Schaltung und
gaz (ISO 25197:2020) Antrieb (ISO 25197:2020)
This European Standard was approved by CEN on 7 March 2020.

CEN 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
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 member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 25197:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2013/53/EU aimed to be covered . 4

European foreword
This document (EN ISO 25197:2020) has been prepared by Technical Committee ISO/TC 188 "Small
craft" in collaboration with CCMC.
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 October 2020, and conflicting national standards shall
be withdrawn at the latest by October 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 25197:2018.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For the relationship with EU Directive(s) see informative Annex ZA, which is an integral part of this
document.
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, 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 the
United Kingdom.
Endorsement notice
The text of ISO 25197:2020 has been approved by CEN as EN ISO 25197:2020 without any modification.

Annex ZA
(informative)
Relationship between this European Standard and the essential
requirements of Directive 2013/53/EU aimed to be covered
This European Standard has been prepared under a Commission’s standardization request
M/542/C(2015) 8736 final to provide one voluntary means of conforming to essential requirements of
Directive 2013/53/EU.
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZA.1 confers, within the limits of
the scope of this standard, a presumption of conformity with the corresponding essential requirements
of that Directive, and associated EFTA regulations.
Table ZA.1 — Correspondence between this European Standard and Annex I of
Directive 2013/53/EU
Essential Requirements of Clause(s)/sub- Remarks/Notes
Directive 2013/53/EU clause(s)of this EN
Annex I, sub clause 2.5 4.7, 4.11, 12 These clauses specify the information to be
included in the owner’s manual.
Owner’s manual
Annex I, 5.4 Steering system 10.2 In respect of transmission of steering loads in
all foreseeable conditions.
5.4.1 General
Annex I, 5.4 Steering system 9.1.4 In respect of single engine non-sailing craft
with remote rudder steering only.
5.4.2 Emergency
arrangements
Annex II (3) - Steering wheels, 10.2 In respect of the transmission of steering loads
steering mechanisms and in for electric/electronic steering systems
cable assemblies supplied as components only.
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
Standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
INTERNATIONAL ISO
STANDARD 25197
Second edition
2020-04
Small craft — Electrical/electronic
control systems for steering, shift and
throttle
Petits navires — Systèmes électriques/électroniques pour le contrôle
de la direction, de l'inverseur et des gaz
Reference number
ISO 25197:2020(E)
©
ISO 2020
ISO 25197:2020(E)
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
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Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved

ISO 25197:2020(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 General requirements . 5
5 Control head . 6
6 Command station transfer . 8
7 Portable helm station controls . 8
8 Dynamic-positioning system (DPS) . 8
9 Failure modes and responses . 9
9.1 Loss of operation . 9
9.2 Loss of computer command logic . 9
10 Test requirements .10
10.1 General test requirements .10
10.2 Steering .10
10.3 Control lever(s) for separate or combined shift and throttle functions .10
10.4 Joystick .11
10.5 Environmental-test requirements.12
10.5.1 General.12
10.5.2 Salt mist tests .13
10.5.3 Damp heat — Cyclic .14
10.5.4 Damp heat — Steady state .14
10.5.5 High-temperature test — Operation .14
10.5.6 High-temperature test — Storage .14
10.5.7 Low-temperature test — Operation.15
10.5.8 Low-temperature test — Storage .15
10.6 Vibration tests and requirements .15
10.7 Shock testing .16
10.8 Drop test .16
10.9 Resistance to UV .16
10.10 Electromagnetic compatibility (EMC).17
10.10.1  Electromagnetic interference tests .17
10.10.2  EMC performance criteria . .17
10.10.3  Immunity to conducted low-frequency interference .17
10.10.4  Immunity to conducted radio-frequency interference .18
10.10.5  Immunity to radiated radio-frequency fields .18
10.10.6  Immunity to fast, low-energy transients (bursts) .18
10.10.7  Immunity to slow, high-energy transients (surges) .19
10.10.8  Immunity to electrostatic discharge (ESD) .19
10.10.9  Immunity to power supply variation .19
10.10.10 .
Radiated emissions .20
10.10.11 .
Conducted emissions .20
10.11 Compass safe distance .20
10.12 Insulation resistance .20
11 Labelling .20
12 Instructions to be included in the owner's manual.20
Bibliography .22
ISO 25197:2020(E)
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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 188, Small craft.
This second edition cancels and replaces the first edition (ISO 25197:2012), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— the terms and definitions have been revised to give coherency with other standard definitions; new
terms, such as input device and output device, have been introduced;
— the figures have been revised to clarify the concepts illustrated;
— 7.2, on portable helms, has been revised to make it coherent when an electric propulsion motor is used;
— 9.1 has been revised to include the fail-safe mode and the alarm policy;
— the main change is in 10.1: the request to use three different samples for all tests (except for EMC
test) has been deleted because it would have involved a great expense without having significant
improvement; only one sample is used for all tests described on the subsequent subclauses;
— the durability test on joystick described in 10.4 has been made an operational test;
— Table 1 in 10.5.1 has been updated introducing the column “immersion” to handle test on immerged
components;
— in 10.5.2, all ways to conduct the salt mist test, based on different standards, have been homogenized;
— in 10.7, the shock test has been revised;
— in 10.8, the free fall test has become the drop test with the addiction of the UV test;
— the UV test, described in 10.9, has been clarified;
iv © ISO 2020 – All rights reserved

ISO 25197:2020(E)
— in 10.10, there are many changes due to the revision of IEC 60533 and the forthcoming release of
IEC 62742; to avoid any direct link to those standards, all tests previously required by IEC 60533
have been embedded and all standards cited have been added to the normative reference list.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
INTERNATIONAL STANDARD ISO 25197:2020(E)
Small craft — Electrical/electronic control systems for
steering, shift and throttle
1 Scope
This document establishes the requirements for the design, construction and testing of electrical/
electronic steering, shift and throttle systems and dynamic positioning control systems, or combinations
thereof, on small craft of up to 24 m length of hull.
This document does not apply to electric trolling motors and autopilot systems on sailing craft.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
ISO 4892-1:2016, Plastics — Methods of exposure to laboratory light sources — Part 1: General guidance
ISO 4892-2:2013, Plastics — Methods of exposure to laboratory light sources — Part 2: Xenon-arc lamps
ISO 4892-3:2016, Plastics — Methods of exposure to laboratory light sources — Part 3: Fluorescent UV lamps
ISO 4892-4:2013, Plastics — Methods of exposure to laboratory light sources — Part 4: Open-flame carbon-
arc lamps
ISO 8846:1990, Small craft — Electrical devices — Protection against ignition of surrounding
flammable gases
ISO 8848:1990, Small craft — Remote steering systems
ISO 10133:2012, Small craft — Electrical systems — Extra-low-voltage d.c. installations
ISO 10240:2004/Amd1: 2015, Small craft — Owner’s manual
ISO 10592:1994, Small craft — Hydraulic steering systems
ISO 11591:2019, Small craft — Field of vision from the steering position
ISO 13297:2014, Small craft — Electrical systems — Alternating current installations
ISO 16750-2:2012, Road vehicles — Environmental conditions and testing for electrical and electronic
equipment — Part 2: Electrical loads
ISO 16750-3:2012, Road vehicles — Environmental conditions and testing for electrical and electronic
equipment — Part 3: Mechanical loads
ISO 16750-4:2010, Road vehicles — Environmental conditions and testing for electrical and electronic
equipment — Part 4: Climatic loads
ASTM B117: 2016, Practice for operating salt spray (fog) apparatus
IEC 60068-2-27:2008, Environmental testing — Part 2-27: Tests — Test Ea and guidance: Shock
IEC 60068-2-52:2017, Environmental testing — Part 2-52: Tests — Test Kb: Salt mist, cyclic (sodium
chloride solution)
ISO 25197:2020(E)
IEC 60092-507:2014, Electrical installations in ships — Part 507: Small vessels
IEC 60945:2002, Maritime navigation and radiocommunication equipment and systems — General
requirements — Methods of testing and required test results
IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) — Part 4: Testing and measurement
techniques — Section 2: Electrostatic discharge immunity test — Basic EMC publication
IEC 61000-4-3:2006+Amd1: 2007+ Amd2: 2010, Electromagnetic compatibility (EMC) — Part 4: Testing
and measurement techniques — Section 3: Radiated, radio frequency, electromagnetic field immunity test
IEC 61000-4-4:2012, Electromagnetic compatibility (EMC) — Part 4: Testing and measurement
techniques — Section 4: Electrical fast transient/burst immunity test — Basic EMC publication
IEC 61000-4-5:2014+Amd1: 2017, Electromagnetic compatibility (EMC) — Part 4: Testing and
measurement techniques — Section 5: Surge immunity test
IEC 61000-4-6:2013, Electromagnetic compatibility (EMC) — Part 4: Testing and measurement techniques
– Section 6: Immunity to conducted disturbances, induced by radio-frequency fields
IEC 61000-4-11:2004+Amd1: 2017, Electromagnetic compatibility (EMC) — Part 4: Testing and measurement
techniques — Section 11: Voltage dips, short interruptions and voltage variations immunity tests
IEC 61000-4-16:2015, Electromagnetic compatibility (EMC) — Part 4: Testing and measurement
techniques — Section 16: Test for immunity to conducted, common mode disturbance in the frequency
range 0 Hz to 150 KHz
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
electrical steering system
electronic steering system
all components, including CPU (central processing unit) and cable harnesses, from the manual steering
input device (3.11) up to and including the device [actuator (3.22) or electrical motor] regulating the
rudder or propulsion unit steering angle
Note 1 to entry: It includes the joystick (3.15) and components, i.e. GPS antennas for dynamic positioning, if
installed.
3.2
dynamic-positioning system
computer-controlled system to automatically maintain a craft's position and heading by using the
craft’s own propulsion systems with or without the assistance of bow or stern thrusters
3.3
electrical shift and throttle system
electronic shift and throttle system
all components, including CPU (central processing unit) and cable harnesses, from the shift and throttle
input device (3.11) up to and including the device controlling the shift and speed of engines
2 © ISO 2020 – All rights reserved

ISO 25197:2020(E)
3.4
ignition-protected equipment
electrical equipment designed and tested for use in explosive atmospheres without igniting surrounding
flammable gases
3.5
nominal voltage
commonly used voltage, such as 12 V, 24 V, or 36 V DC
3.6
manoeuvring mode
reduced power mode for manoeuvring, determined by the manufacturer of the steering/control systems
3.7
cruising mode
power mode above manoeuvring mode (3.6) up to full power, determined by the manufacturer
3.8
X axis
direction of a craft fore or aft, longitudinally
3.9
Y axis
direction of a craft port or starboard, transversely
3.10
Z axis
axis perpendicular to the X-Y plane
3.11
input device
device that transmits commands to a system
3.12
output device
device that operates from commands coming from an input device(s) (3.11)
EXAMPLE Electromechanical or electrohydraulic actuator (3.22).
3.13
control head
operator input device (3.11), other than a steering wheel, for the simultaneous control of steering and
propulsion (3.20)
EXAMPLE Joystick (3.15), track-ball or slide levers.
3.14
control lever
operator input device (3.11) for the control of thrust (3.23) and/or propulsion (3.20)
3.15
joystick
operator input device (3.11) for the simultaneous control of thrust (3.23), steering and propulsion (3.20)
3.16
helm station
location from which steering, propulsion (3.20) and thrust (3.23) can be controlled
3.17
multiple helm stations
more than one location in the boat from which steering, propulsion (3.20) and thrust (3.23) can be
controlled
ISO 25197:2020(E)
3.18
command station
helm station (3.16) location that is in active control
3.19
portable helm
helm providing a combination of shift or throttle or steering, not permanently affixed to the craft’s
structure, communicating with the system through wired or wireless (3.24) means
3.20
propulsion
component or components of thrust (3.23) that permit a craft’s movement in any direction
Note 1 to entry: Examples of propulsion-generating devices include outboards, stern drives, pod drives, jet
drives, inboards and thrusters.
3.21
radio-frequency
RF
frequency within the range of frequencies suitable for utilization in radio communication
3.22
actuator
electromechanical, electropneumatic and/or electrohydraulic device that converts an electrical signal
into a mechanical displacement
3.23
thrust
propulsive force from craft’s propulsion system, including bow or stern thrusters or a combination
thereof in order to move or rotate the craft
3.24
wireless
mode of communication, monitoring and/or control through the use of electromagnetic, acoustic or
optical transmission through atmospheric space
3.25
damp area
area where moisture is either permanently or intermittently present
EXAMPLE Bilge, head, galley.
3.26
wet area
area exposed to weather
3.27
interior
protected area inside the craft
3.28
immersion
area totally or partially under water
3.29
EUT
equipment under test
representative system, or part of it, used on tests
3.30
performance criterion
standard by which the functional status of an EUT (3.29) during and after testing is judged
4 © ISO 2020 – All rights reserved

ISO 25197:2020(E)
3.31
failure modes and effects analysis
FMEA
procedure in product development and operations development for analysis of potential failure modes
3.32
fail-safe mode
device or feature which, in the event of failure, responds in a way that causes no harm, or minimizes the
harm, to other devices, and causes no danger, or minimizes the danger, to personnel
3.33
trolling motor
electric propulsion unit that produces less than 500 N thrust (3.23), that includes an electric motor,
propeller and controls
3.34
autopilot system
system used to control the craft without constant hands on control by a human operator
4 General requirements
4.1 All electrical/electronic components shall be designed to withstand a reversed polarity connection
of the power leads. This shall not render the component inoperable when subsequently connected to the
power correctly.
NOTE Replacement of an external fuse, after reverse connection of power supply, is acceptable.
4.2 All electrical/electronic components shall be designed with reverse polarity protection from
internal surges.
4.3 DC systems shall comply with ISO 10133:2012. AC systems shall comply with ISO 13297:2014. An
acceptable alternative to ISO 10133:2012 and ISO 13297:2014 is given in IEC 60092-507:2014.
4.4 The system shall be energized whenever the propulsion engine(s) are running.
4.5 The system, except for dynamic positioning and displays, shall be fully operational within 5 s after
being turned on (powered).
4.6 In multi-installed engine control systems, the craft manoeuvrability shall be possible in presence
of a control system fault. System performance may be at a reduced speed.
4.7 Each helm station shall give a visual indication when active. A main steering position shall be
designated and meet the applicable requirements of ISO 11591:2019, with the location included in the
owner’s manual.
4.8 Each helm station shall, by visible and/or audible means, alert the operator when the system
enters the fail-safe mode.
4.9 The A-weighted sound pressure level of an audible alarm 1 m from the command station shall be
at
...