ISO 22554:2015
(Main)Ships and marine technology — Propeller shaft revolution indicators — Electric type and electronic type
Ships and marine technology — Propeller shaft revolution indicators — Electric type and electronic type
ISO 22554:2015 specifies the construction, performance requirements, methods of testing, and required test results for electric and electronic propeller shaft revolution indicators (hereinafter referred to as "indicator system") required by Clause 2.5.4, Regulation 19, chapter V, SOLAS 1974 (as amended, 2000). This International Standard is associated with IMO Resolution A.694 (17) and IEC 60945. Where a requirement in this International Standard differs from IEC 60945, the requirement in this International Standard takes precedence. NOTE When this indicator system can be used as the tachometer for the engine of a ship, its usage as the tachometer will be accepted.
Navires et technologie maritime — Indicateurs de vitesse d'arbre du propulseur — Type électrique et type électronique
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INTERNATIONAL ISO
STANDARD 22554
Second edition
2015-03-15
Ships and marine technology —
Propeller shaft revolution indicators
— Electric type and electronic type
Navires et technologie maritime — Indicateurs de vitesse d’arbre du
propulseur — Type électrique et type électronique
Reference number
ISO 22554:2015(E)
©
ISO 2015
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ISO 22554:2015(E)
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© ISO 2015
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ii © ISO 2015 – All rights reserved
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ISO 22554:2015(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Construction of indicator system . 2
4.1 Indicator system . 2
4.2 Transmitters . 3
4.3 Indicator . 4
5 Performance requirements . 5
5.1 General . 5
5.2 Balance . 5
5.3 Friction error . 5
5.4 Calibration accuracy . 5
5.5 Damping . 5
5.6 Zero point . 5
5.7 Output electric signal of a signal converter . 6
5.8 Output electric signal accuracy of a signal converter . 6
5.9 Power supply fluctuations . 6
5.10 Insulation resistance and high voltage . 6
6 Methods of testing and required test results . 7
6.1 Test items and sequence . 7
6.2 Construction . 7
6.3 Environmental test . 7
6.4 Balance test . 7
6.5 Friction test . 7
6.6 Calibration accuracy test . 7
6.7 Damping test . 7
6.8 Zero point test . 8
6.9 Signal converter output electric signal test . 8
6.10 Signal converter output electric signal accuracy test . 8
6.11 Power supply fluctuation test . 8
7 Interface . 8
8 Marking . 8
9 Information . 8
Bibliography . 9
© ISO 2015 – All rights reserved iii
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ISO 22554:2015(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 on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT), see the following URL: Foreword — Supplementary information.
The committee responsible for this document is ISO/TC 8, Ships and marine technology, Subcommittee
SC 6, Navigation and ship operations.
This second edition cancels and replaces the first edition (ISO 22554:2007), subclauses 5.2, 5.3, 5.4, and
5.6 of which have been technically revised.
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INTERNATIONAL STANDARD ISO 22554:2015(E)
Ships and marine technology — Propeller shaft revolution
indicators — Electric type and electronic type
1 Scope
This International Standard specifies the construction, performance requirements, methods of testing,
and required test results for electric and electronic propeller shaft revolution indicators (hereinafter
referred to as “indicator system”) required by Clause 2.5.4, Regulation 19, chapter V, SOLAS 1974 (as
amended, 2000).
This International Standard is associated with IMO Resolution A.694 (17) and IEC 60945.
Where a requirement in this International Standard differs from IEC 60945, the requirement in this
International Standard takes precedence.
NOTE When this indicator system can be used as the tachometer for the engine of a ship, its usage as the
tachometer will be accepted.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
IEC 60945, Maritime navigation and radiocommunication equipment and systems — General requirements
— Methods of testing and required test results
IEC 61162-1, Maritime navigation and radiocommunication equipment and systems — Digital interfaces —
Part 1: Single talker and multiple listeners
IEC 61162-2, Maritime navigation and radiocommunication equipment and systems — Digital interfaces —
Part 2: Single talker and multiple listeners, high-speed transmission
IEC 62288:2014, Maritime navigation and radiocommunication equipment and systems — Presentation
of navigation-related information on shipborne navigational displays — General requirements, methods of
testing and required test results
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
propeller shaft revolution indicator
remote device capable of indicating the number of revolutions per minute only, or the number of
revolutions per minute and the direction of the revolution of the shaft on which it is mounted
3.2
electric propeller shaft revolution indicator
electric type indicator that employs a generator driven by the propeller shaft through the driving unit
that transmits the revolution speed (number of revolutions per minute) and direction of rotation of the
propeller shaft
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ISO 22554:2015(E)
3.3
electronic propeller shaft revolution indicator
electronic type indicator that employs a revolution sensor that detects pulses generated by a gear
turning the propeller shaft or a circular disc with a slit and transmits these pulses to a signal converter
3.4
indicator
means by which the state of the equipment or machinery is represented to an observer
Note 1 to entry: An indicator shows both the sense and magnitude of the information it presents. An indicator can
be analog or digital.
3.5
analog type indicator
indicator that shows the revolution speed in a continuous way, such as by means of an arrow pointer and
graduated scale
3.6
digital type indicator
indicator that shows the revolution speed in a discrete, alphanumeric way
3.7
calibration accuracy
difference between the true revolution speed of a propeller shaft and the revolution speed indicated by
the indicator
3.8
damping efficiency
amount by which an indicator initially over-reads in response to a sudden signal input, as a percentage
of the maximum reading
4 Construction of indicator system
4.1 Indicator system
4.1.1 An indicator system should show information on the state of the equipment or machinery to which
it is connected at locations adjacent to, or remote from, the equipment or machinery. At the equipment
or machinery, such systems will generally comprise a sensor
...
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