SIST EN 54-18:2006
(Main)Fire detection and fire alarm systems - Part 18: Input/output devices
- Abstract
This European Standard specifies requirements, test methods and performance criteria for input/output devices connected to a transmission path of a fire detection and fire alarm system, used to receive and/or transmit electrical signals to or from the transmission path, necessary for the operation of the fire detection and fire alarm system and/or fire protection system.
An input/output device may be a physically separate device or its function may be integrated into another device in which case this European Standard may be used to assess this function.
Control and indicating equipment, and ancillary control and indicating equipment (e.g. repeater panels and fire brigade panels) are not covered by this European Standard.
- Status
- Published
- Publication Date
- 31-Mar-2006
- Technical Committee
- POZ - Požarna varnost
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Apr-2006
- Due Date
- 01-Apr-2006
- Completion Date
- 01-Apr-2006
- Directive
- 2012-01-0929 - Odredba o določitvi standardov, ki so obvezni na področju zasebnega varovanja
305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eecOJ Ref: C 259 OJ Date: 08-Aug-2014
89/106/EEC - Construction productsOJ Ref: C 304 OJ Date: 13-Dec-2006
SIST EN 54-18:2006 is the Slovenian adoption of EN 54-18:2005 from CEN for fire detection and fire alarm systems. It specifies requirements, test methods and performance criteria for input/output devices used on the transmission path of a fire detection and fire alarm system. The standard is aimed at manufacturers, test laboratories, certification bodies and system designers who need to assess these devices as separate units or as integrated functions.
What does SIST EN 54-18:2006 specify?
SIST EN 54-18:2006 specifies how input/output devices for fire detection and fire alarm systems are defined, marked, documented and type tested. It also sets the route to CE-related conformity in Annex ZA for products placed on the market as construction products.
The scope is narrow and practical: the device must be connected to a transmission path and must receive and/or transmit electrical signals needed for the operation of the fire detection and fire alarm system and/or fire protection system. Control and indicating equipment, including ancillary control and indicating equipment such as repeater panels and fire brigade panels, is outside the scope.
The document is organized into:
- Clause 1 Scope
- Clause 2 Normative references
- Clause 3 Terms, definitions and abbreviations
- Clause 4 Requirements
- Clause 5 Tests
- Annex ZA on the EU construction products link and CE marking
- Bibliography
| Annex | What it covers |
|---|---|
| ZA | Relationship with the Construction Products Directive, attestation of conformity, CE marking, and declaration of conformity |
What are the key requirements of SIST EN 54-18:2006?
SIST EN 54-18:2006 combines product definition, identification, documentation, software control and environmental testing. In practice, it asks manufacturers to show that the device works as specified, stays stable under expected stresses, and can be traced and supported throughout installation and maintenance.
Compliance and applicability
Clause 4 says compliance is shown by meeting the requirements of Clause 4 itself, passing the tests in Clause 5, and satisfying the test criteria. For an input/output function integrated into another device, the function can be assessed within the host product, but the required functional checks before, during and/or after conditioning still apply.
For a reader, this means the input/output function cannot be treated as an informal add-on. If it is built into a detector or another product, its behavior still has to be verified as a fire system function.
Monitoring, marking and technical data
Clause 4 requires detachable devices to provide a means for remote monitoring to detect removal from the mounting base and to generate a fault signal. The intent is simple: if someone removes the device, the fire alarm system must know about it.
Clause 4 also requires clear marking and supply data. The device has to carry the standard reference, manufacturer or supplier name, model designation, terminal designations, and traceability information including the production batch or date and any software version inside the device. The accompanying data must define the electrical input and output functions and the signal processing needed for correct operation.
For users, this matters because installers and service technicians need wiring and operating information that is unambiguous, and operators need traceability when troubleshooting or handling field problems.
Documentation and software-controlled devices
Clause 4 requires design documentation such as drawings, parts lists, block diagrams and circuit diagrams. Where relevant, the documentation also covers the signal processing principle. For software-controlled devices, the standard asks for an overview of the software design, and more detailed design documentation if the testing authority requests it.
The software requirements are specific: the software needs a modular structure, invalid data must not be able to cause program errors, and deadlock must be avoided. The program and manufacturer preset data must be held in non-volatile memory, and changes to that memory must not be possible during normal operation. Site-specific data must either be retained for at least 2 weeks without external power or be restored automatically within 1 h after power returns.
In practice, this is about predictable behavior after faults, power loss and maintenance work.
Test program and environmental robustness
Clause 5 uses a structured test schedule with 12 specimens. The testing covers performance at supply limits, high and low temperature, humid conditions, sulphur dioxide corrosion, shock, impact, vibration and EMC immunity. Each test has its own conditioning, recovery and functional test steps.
That matters because it separates electrical performance from environmental endurance. A device may work at nominal room conditions but still fail under heat, cold, humidity, vibration or electrical disturbance, so the standard checks all of those areas.
EMC immunity and fire-system behavior
Clause 5.12 sends EMC immunity testing to EN 50130-4 and requires the device to keep functioning correctly during and after those tests. The accepted behavior is no unwanted or unspecified function during conditioning, followed by correct function in the final functional test.
For procurement and quality teams, this is the part that shows the device is not just electrically active but tolerant of the electromagnetic environment normally found in fire and alarm installations.
CE-related conformity under Annex ZA
Annex ZA links the standard to the Construction Products Directive and sets the conformity route for input/output devices used for fire safety. It assigns system 1 attestation of conformity, with factory production control, type testing, initial factory inspection and periodic surveillance.
For a buyer or manufacturer, this means the technical requirements are tied to a formal conformity process, including the records, testing and product identification needed for CE marking and the declaration of conformity.
What terms does SIST EN 54-18:2006 define?
SIST EN 54-18:2006 defines the terms that shape how the product is tested and documented.
- Input/output device - A device on the transmission path of a fire detection and fire alarm system that receives and/or transmits electrical signals needed for system operation.
- Conditioning - Exposure of a specimen to environmental conditions so the effect on the specimen can be assessed.
- Recovery - Treatment after conditioning so the specimen stabilizes before measurement.
- Control and indicating equipment (CIE) - The equipment that controls and indicates the fire alarm system status; the standard uses the abbreviation CIE.
- Electromagnetic compatibility (EMC) - The ability of the device to operate correctly in an electromagnetic environment; the standard uses EMC when discussing immunity tests.
Who uses SIST EN 54-18:2006?
SIST EN 54-18:2006 is used by manufacturers of fire detection and fire alarm system components, especially when the input/output function is a standalone device or built into another product. It is also used by test laboratories that run type tests, by notified product certification bodies that assess conformity, and by factory production control teams that need to keep production aligned with tested samples.
System integrators, specifiers and quality managers use it to check whether a device is suitable for a fire alarm installation and whether its electrical and environmental behavior is defined well enough for purchase, certification and maintenance.
What changed in SIST EN 54-18:2006 from the previous edition?
SIST EN 54-18:2006 is identified as identical to EN 54-18:2005. The Slovenian publication therefore follows the 2005 European edition.
Which standards are used with SIST EN 54-18:2006?
| Standard | What it contributes |
|---|---|
| EN 54-1:1996 | Basic terms and general framework for fire detection and fire alarm systems |
| EN 50130-4:1995 | EMC immunity requirements for components of fire, intruder and social alarm systems |
| EN 60068-1 | General guidance for environmental testing conditions |
| EN 60068-2-1 | Cold test method used in Clause 5 |
| EN 60068-2-2 | Dry heat test method used in Clause 5 |
| EN 60068-2-6 | Sinusoidal vibration test method used in Clause 5 |
| EN 60068-2-27 | Shock test method used in Clause 5 |
| EN 60068-2-30 | Damp heat, cyclic test method used in Clause 5 |
| EN 60068-2-42 | Sulphur dioxide corrosion test method used in Clause 5 |
| EN 60068-2-75 | Hammer impact test method used in Clause 5 |
| EN 60068-2-78 | Damp heat, steady state test method used in Clause 5 |
| EN ISO 9001:2000 | Cited in Annex ZA as a reference point for quality management and factory production control |
The foreword also places EN 54-18 within the wider EN 54 series, alongside parts covering control and indicating equipment, power supply equipment, compatibility assessment, planning and installation guidance, voice alarm equipment, short-circuit isolators, aspirating smoke detectors, alarm transmission and routing equipment, line-type heat detectors, visual alarms, loudspeakers and radio links.
What does the SIST EN 54-18:2006 document contain?
SIST EN 54-18:2006 contains the product scope, formal references, defined terms, and a requirements section that covers compliance, monitoring of detachable devices, marking, data, documentation and software-controlled devices. It then gives a detailed test section with a general test setup, specimen allocation, and specific methods for supply variation, temperature, humidity, corrosion, shock, impact, vibration and EMC immunity.
The document also includes Table 1, which assigns specimens to each test, and Annex ZA, which gives the CE-marking and conformity route for construction products used for fire safety. For manufacturers and labs, this means the standard is not only a product definition but also a complete test and conformity framework.
Relations
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 03-Jun-2026
- Effective Date
- 08-Apr-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 28-Jan-2026
Get Certified
Connect with accredited certification bodies for this standard
CIS Institut d.o.o.
Personal Protective Equipment (PPE) certification body. Notified Body NB-2890 for EU Regulation 2016/425 PPE.
Kiwa BDA Testing
Building and construction product certification.
Kmetijski inštitut Slovenije
Agricultural Institute of Slovenia. Soil testing, plant health, agricultural product analysis.
Sponsored listings
Frequently Asked Questions
SIST EN 54-18:2006 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Fire detection and fire alarm systems - Part 18: Input/output devices". This standard covers: This European Standard specifies requirements, test methods and performance criteria for input/output devices connected to a transmission path of a fire detection and fire alarm system, used to receive and/or transmit electrical signals to or from the transmission path, necessary for the operation of the fire detection and fire alarm system and/or fire protection system. An input/output device may be a physically separate device or its function may be integrated into another device in which case this European Standard may be used to assess this function. Control and indicating equipment, and ancillary control and indicating equipment (e.g. repeater panels and fire brigade panels) are not covered by this European Standard.
This European Standard specifies requirements, test methods and performance criteria for input/output devices connected to a transmission path of a fire detection and fire alarm system, used to receive and/or transmit electrical signals to or from the transmission path, necessary for the operation of the fire detection and fire alarm system and/or fire protection system. An input/output device may be a physically separate device or its function may be integrated into another device in which case this European Standard may be used to assess this function. Control and indicating equipment, and ancillary control and indicating equipment (e.g. repeater panels and fire brigade panels) are not covered by this European Standard.
SIST EN 54-18:2006 is classified under the following ICS (International Classification for Standards) categories: 13.220.20 - Fire protection; 13.320 - Alarm and warning systems. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 54-18:2006 has the following relationships with other standards: It is inter standard links to SIST EN 60068-2-42:2004, SIST EN IEC 60068-2-1:2026, SIST EN IEC 60068-2-2:2026, SIST EN IEC 60068-2-30:2025, SIST EN 60068-2-78:2002, SIST EN 50130-4:1997, SIST EN 60068-1:2014, SIST EN 60068-2-75:2014, SIST EN 1365-1:1999, SIST EN 54-1:1996, SIST EN 12845:2015+A2:2026, SIST EN 17229:2026, SIST EN 50600-2-5:2016, SIST EN 50600-2-5:2021, SIST EN 16925:2019. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 54-18:2006 is associated with the following European legislation: EU Directives/Regulations: 2012-01-0929, 2020-01-0063, 305/2011, 89/106/EEC, EUR-PUB; Standardization Mandates: M/109. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
SIST EN 54-18:2006 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2006
Sistemi za odkrivanje in javljanje požara ter alarmiranje – 18. del: Vhodno/izhodne
naprave
Fire detection and fire alarm systems - Part 18: Input/output devices
Brandmeldeanlagen - Teil 18: Eingangs-/Ausgangsgeräte
Systemes de détection et d'alarme incendie - Partie 18: Dispositifs d'entrée/sortie
Ta slovenski standard je istoveten z: EN 54-18:2005
ICS:
13.220.20 3RåDUQD]DãþLWD Fire protection
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 54-18
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2005
ICS 13.220.20
English Version
Fire detection and fire alarm systems - Part 18: Input/output
devices
Systèmes de détection et d'alarme incendie - Partie 18: Brandmeldeanlagen - Teil 18: Eingangs-/Ausgangsgeräte
Dispositifs d'entrée/sortie
This European Standard was approved by CEN on 26 October 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 54-18:2005: E
worldwide for CEN national Members.
Contents Page
Foreword.3
Introduction .5
1 Scope .6
2 Normative references .6
3 Terms, definitions and abbreviations.7
3.1 Terms and definitions .7
3.2 Abbreviations.7
4 Requirements.7
4.1 Compliance.7
4.2 Monitoring of detachable devices.7
4.3 Marking and data .8
4.4 Documentation.8
4.5 Requirements for software controlled devices .8
5 Tests.10
5.1 General.10
5.2 Performance and variation in supply parameters .12
5.3 Dry heat (operational).12
5.4 Cold (operational) .13
5.5 Damp heat, cyclic (operational).14
5.6 Damp heat, steady state (endurance).15
5.7 Sulphur dioxide (SO ) corrosion (endurance) .16
5.8 Shock (operational) .17
5.9 Impact (operational).18
5.10 Vibration, sinusoidal (operational).19
5.11 Vibration, sinusoidal (endurance).20
5.12 Electromagnetic Compatibility (EMC) Immunity tests.21
Annex ZA (informative) Relationship of this European Standard with the Construction Products
Directive 89/106/EEC .22
ZA.1 Scope and relevant clauses.22
ZA.2 Procedures for the attestation of conformity of input/output devices covered by this
standard.23
ZA.3 CE Marking and labelling and accompanying documentation .28
ZA.4 EC certificate and declaration of conformity .29
Bibliography .31
Foreword
This European Standard (EN 54-18:2005) has been prepared by Technical Committee CEN/TC 72 “Fire
detection and fire alarm systems”, the secretariat of which is held by BSI.
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 June 2006, and conflicting national standards shall be withdrawn at
the latest by December 2008.
This European Standard 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 relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this European
Standard.
EN 54 “Fire detection and fire alarm systems” consists of the following parts:
Part 1: Introduction
Part 2: Control and indicating equipment
Part 3: Fire alarm devices – Sounders
Part 4: Power supply equipment
Part 5: Heat detectors - Point detectors
Part 7: Smoke detectors - Point detectors using scattered light, transmitted light or ionization
Part 10: Flame detectors - Point detectors
Part 11: Manual call points
Part 12: Smoke detectors - Line detectors using an optical light beam
Part 13: Compatibility assessment of system components
Part 14: Guidelines for planning, design, installation, commissioning, use and maintenance
Part 15: Point type multi-sensor fire detectors
Part 16: Voice alarm control and indicating equipment
Part 17: Short-circuit isolators
Part 18: Input/output devices
Part 20: Aspirating smoke detectors
Part 21: Alarm transmission and fault warning routing equipment
Part 22: Line-type heat detectors
Part 23: Fire alarm devices - Visual alarms
Part 24: Components of voice alarm systems – Loudspeakers
Part 25: Components using radio links and system requirements
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
The term input/output devices, used in this European Standard, covers a wide range of different types of
devices, which are intended for different applications, and may therefore have different functions. This
European Standard does not therefore include detailed functional requirements for the input/output devices
but requires that their function is sufficiently specified by the manufacturer and that they function correctly in
accordance with the manufacturer’s specification.
1 Scope
This European Standard specifies requirements, test methods and performance criteria for input/output
devices connected to a transmission path of a fire detection and fire alarm system, used to receive and/or
transmit electrical signals to or from the transmission path, necessary for the operation of the fire detection
and fire alarm system and/or fire protection system.
An input/output device may be a physically separate device or its function may be integrated into another
device in which case this European Standard may be used to assess this function.
Control and indicating equipment, and ancillary control and indicating equipment (e.g. repeater panels and fire
brigade panels) are not covered by this European Standard.
2 Normative references
The following referenced documents are indispensable for the application of this European Standard. For
dated references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 54-1:1996, Fire detection and fire alarm systems — Part 1: Introduction
EN 50130-4:1995, Alarm systems — Part 4: Electromagnetic compatibility - Product family standard: Immunity
requirements for components of fire, intruder and social alarm systems
EN 60068-1, Environmental testing — Part 1: General and guidance (IEC 60068-1:1988 + Corrigendum 1988
+ A1:1992)
EN 60068-2-1, Environmental testing — Part 2: Tests — Tests A: Cold (IEC 60068-2-1:1990)
EN 60068-2-2, Basic environmental testing procedures — Part 2: Tests — Tests B: Dry heat (IEC 60068-2-
2:1974 + IEC 60068-2-2A:1976)
EN 60068-2-6, Environmental testing — Part 2: Tests — Test Fc: Vibration, (sinusoidal) (IEC 60068-2-6:1995
+ Corrigendum 1995)
EN 60068-2-27, Basic environmental testing procedures — Part 2: Tests — Test Ea and guidance: Shock
(IEC 60068-2-27:1987)
EN 60068-2-30, Environmental testing — Part 2: Tests — Test Db and guidance: Damp heat, cyclic (12 + 12
hour cycle) (IEC 60068-2-30:1980 + A1:1985)
EN 60068-2-42, Environmental testing — Part 2-42: Tests — Test Kc: Sulphur dioxide test for contacts and
connections (IEC 60068-2-42:2003)
EN 60068-2-75, Environmental testing — Part 2: Tests — Test Eh: Hammer tests (IEC 60068-2-75:1997)
EN 60068-2-78, Environmental testing — Part 2-78: Tests — Test Cab: Damp heat, steady state (IEC 60068-
2-78:2001)
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN 54-1:1996 and the following
apply.
3.1.1
input/output device
device connected to a transmission path of a fire detection and fire alarm system, used to receive and/or
transmit electrical signals necessary for the operation of the fire detection and fire alarm system
3.1.2
conditioning
exposure of a specimen to environmental conditions in order to determine the effect of such conditions on the
specimen
3.1.3
recovery
treatment of a specimen, after conditioning, so that the properties of the specimen may be stabilised before
measurement
3.2 Abbreviations
For the purposes of this European Standard, the following abbreviations apply:
CIE: Control and indicating equipment.
EMC: Electromagnetic compatibility.
4 Requirements
4.1 Compliance
In order to comply with this European Standard, the input/output devices shall meet the requirements of this
clause, which shall be verified by inspection and engineering assessment, shall be tested as described in
Clause 5 and shall meet the requirements of the tests. For input/output devices integrated into another device,
which is already covered by an existing European Standard, the environmental conditioning shall be
performed in accordance with that European Standard, with the addition of the functional tests before, during
and/or after conditioning, as required in this European Standard.
In some detector standards/specifications, the dry heat (operational) test is conducted in special test
equipment (e.g. in the heat tunnel for heat detectors). The required functional testing of the integrated
input/output device before, during and after the dry heat conditioning may be done in this equipment, if this is
possible without disrupting the detector measurements. Otherwise, a separate dry heat test, with the same
conditioning, shall be conducted. For heat detectors, the test temperature is the maximum application
temperature.
4.2 Monitoring of detachable devices
If an input/output device is detachable (i.e. it is attached to a detachable mounting base), then a means shall
be provided for a remote monitoring system (e.g. the control and indicating equipment) to detect the removal
of the device from the base, in order to give a fault signal.
4.3 Marking and data
4.3.1 Marking
Each input/output device shall be clearly marked with the following information:
a) number and date of this European Standard (i.e. EN 54-18:2005);
b) name or trademark of the manufacturer or supplier;
c) model designation (type or number);
d) wiring terminal designations;
e) some mark(s) or code(s) (e.g. a serial number or batch code), by which the manufacturer can identify, at
least, the date or batch and place of manufacture, and the version number(s) of any software, contained
within the device.
For detachable devices, the head shall be marked with a), b) and d), and the base shall be marked with at least
b) (i.e. its own model designation) and c).
Where any marking on the device uses symbols or abbreviations not in common use then these shall be
explained in the data supplied with the device.
The marking shall be visible during installation and shall be accessible during maintenance.
The markings shall not be placed on screws or other easily removable parts.
NOTE Where ZA.3 covers the same information as required by this subclause, the requirements of this subclause
are met.
4.3.2 Data
Input/output devices shall be supplied with sufficient technical, installation and maintenance data to ensure
their correct installation and operation. These data shall include the parameters necessary to define the input
and/or output functions (e.g. output voltage and current ratings, alarm and fault trip levels, logic levels). If all of
these data are not supplied with each device, then reference to the appropriate data sheet(s) shall be given on,
or with, each device. To enable correct operation of the input/output device, these data shall describe the
requirements for the correct processing of the signals from the device. This can be in the form of a full
technical specification of these signals, a reference to the appropriate signalling protocol or a reference to
suitable types of control and indicating equipment etc.
4.4 Documentation
The manufacturer shall prepare and provide design documentation (e.g. drawings, parts lists, block diagrams,
circuit diagrams). Where appropriate, this shall include documentation of the signal processing principle.
4.5 Requirements for software controlled devices
4.5.1 General
For input/output devices which rely on software control in order to fulfil the requirements of this European
Standard, the requirements of 4.5.2, 4.5.3 and 4.5.4 shall be met.
4.5.2 Software documentation
4.5.2.1 The manufacturer shall prepare documentation which gives an overview of the software design.
This shall be submitted to the testing authority together with the input/output devices. This documentation
shall be in sufficient detail for the design to be inspected for compliance with this European Standard and shall
include at least the following:
a) a functional description of the main program flow (e.g. as a flow diagram or structogram) including:
1) a brief description of the modules and the functions that they perform;
2) the way in which the modules interact;
3) the overall hierarchy of the program;
4) the way in which the software interacts with the hardware of the device;
5) the way in which the modules are called, including any interrupt processing;
b) a description of which areas of memory are used for the various purposes (e.g. the program, site specific
data and running data);
c) a designation, by which the software and its version can be uniquely identified.
4.5.2.2 The manufacturer shall also prepare detailed design documentation, which only needs to be
provided if required by the testing authority. It shall comprise at least the following:
a) an overview of the whole system configuration, including all software and hardware components;
b) a description of each module of the program, containing at least:
1) the name of the module;
2) a description of the tasks performed;
3) a description of the interfaces, including the type of data transfer, the valid data range and the
checking for valid data;
c) full source code listings, as hard copy or in machine-readable form (e.g. ASCII-code), including all global
and local variables, constants and labels used, and sufficient comment for the program flow to be
recognized;
d) details of any software tools used in the design and implementation phase (e.g. CASE-tools, compilers
etc.).
4.5.3 Software design
In order to ensure the reliability of the device, the following requirements for software design shall apply:
a) the software shall have a modular structure;
b) the design of the interfaces for manually and automatically generated data shall not permit invalid data to
cause error in the program operation;
c) the software shall be designed to avoid the occurrence of deadlock of the program flow.
4.5.4 The storage of programs and data
The program necessary to comply with this European Standard, and any preset data such as manufacturer's
settings, shall be held in non-volatile memory. Writing to areas of memory containing this program and data
shall only be possible by the use of some special tool or code and shall not be possible during normal
operation of the device.
Site-specific data shall be held in memory which will retain data for at least 2 weeks without external power to
the device, unless provision is made for the automatic renewal of such data, following loss of power, within 1 h
of power being restored.
5 Tests
5.1 General
5.1.1 Atmospheric conditions for tests
Unless otherwise stated in a test procedure, the testing shall be carried out after the test specimen has been
allowed to stabilize in the standard atmospheric conditions for testing as described in EN 60068-1 as follows:
a) temperature : (15 to 35) °C;
b) relative humidity : (25 to 75) %;
c) air pressure : (86 to 106) kPa.
If variations in these parameters have a significant effect on a measurement, then such variations shall be
kept to a minimum during a series of measurements carried out as part of one test on one specimen.
5.1.2 Operating conditions for tests
If a test method requires a specimen to be operational, then the specimen shall be connected to suitable
supply and monitoring equipment with characteristics as required by the manufacturer's data. Unless
otherwise specified in the test method, the supply parameters applied to the specimen shall be set within the
manufacturer's specified range(s) and shall remain substantially constant throughout the tests. The value
chosen for each parameter shall normally be the nominal value, or the mean of the specified range.
The details of the supply and monitoring equipment used shall be given in the test report.
5.1.3 Mounting arrangements
When necessary, the specimen shall be mounted by its normal means of attachment in accordance with the
manufacturer's instructions. If these instructions describe more than one method of mounting then the method
considered to be most unfavourable shall be chosen for each test.
5.1.4 Functional test
Each function of the input/output device shall be activated, by a suitable means in accordance with the
manufacturer's specification, and appropriate observations or measurements shall be made to confirm the
correct operation of the device.
NOTE The variety and the diversity of the equipment within the scope of this European Standard make it difficult to
define the precise details of this functional test. This functional test is intended to exercise each function of the device in a
simple way. A more complete assessment of the performance of these functions, in accordance with the manufacturer's
specification, is made in the performance and variation in supply voltage test (see 5.2).
5.1.5 Tolerances
Unless otherwise stated, the tolerances for the environmental test parameters shall be as given in the basic
reference standards for the test (e.g. the relevant parts of EN 60068-2).
If a requirement or test procedure does not specify a tolerance or deviation limits, then deviation limits of ± 5 %
shall be applied.
5.1.6 Provision for tests
Twelve specimens are required to conduct the tests as indicated in the test schedule (see 5.1.7). These
specimens shall be numbered 1 to 12 arbitrarily.
NOTE The number of specimens may be reduced to a minimum of 9 if the same specimen is used for more than one
EMC test (see Table 1, note).
The specimens submitted shall be representative of the manufacturer’s normal production with regard to their
construction.
5.1.7 Test schedule
The specimens shall be tested according to the test schedule in Table 1.
Table 1 — Test schedule for input/output devices
Test Clause Specimen number
Performance and variation of supply parameters 5.2 1
Dry heat (operational) 5.3 2
Cold (operational) 5.4 2
Damp heat, cyclic (operational) 5.5 3
Damp heat, steady state (endurance) 5.6 4
SO corrosion (endurance) 5.7 5
Shock (operational) 5.8 6
Impact (operational) 5.9 7
Vibration (operational) 5.10 8
Vibration (endurance) 5.11 8
Electromagnetic Compatibility (EMC), immunity tests 5.12 9 to 12*
NOTE In the interests of test economy, it is permitted to use the same specimen for more than
one EMC test. In this case, intermediate functional test(s) on the specimen(s) used for more than
one test may be deleted, and a functional test conducted at the end of the sequence of tests.
However it should be noted that in the event of a failure, it may not be possible to identify which test
exposure caused the failure (see EN 50130-4:1995, Clause 4).
5.2 Performance and variation in supply parameters
5.2.1 Object
To demonstrate the ability of the input/output device to function correctly in accordance with the
manufacturer's specifications, at the upper and lower limits of the supply parameters specified by the
manufacturer.
5.2.2 Test procedure
The input and output device shall be connected to suitable supply and monitoring equipment, as specified by
the manufacturer. The performance of each function of the input/output device shall be tested, according to
the manufacturer's specification, at the upper and at the lower limits of the supply parameter (e.g. voltage)
range(s). The testing of the device’s performance shall include tests and measurements in all operating
modes with the maximum and minimum parameters and parameter settings specified by the manufacturer for
the input and/or output lines (see 4.3.2).
If it is not possible to adjust the input/output device's supply voltage to the upper and lower limits, then the
performance shall be tested at the worst case conditions of the supply voltage to the supply and monitoring
equipment, and the line impedance, allowed by the manufacturer's specifications.
5.2.3 Requirements
The input/output device shall function correctly within the manufacturer's specifications.
5.3 Dry heat (operational)
5.3.1 Object
To demonstrate the ability of the input/output device to function correctly at high ambient temperatures, which
may occur for short periods in the service environment.
5.3.2 Test procedure
5.3.2.1 Reference
The test apparatus and procedure shall be as described in EN 60068-2-2, Test Bb and as described in 5.3.2.2
to 5.3.2.6.
5.3.2.2 Initial measurements
Before conditioning, the functional test shall be conducted as described in 5.1.4.
5.3.2.3 State of the specimen during conditioning
The specimen shall be mounted as described in 5.1.3 and shall be connected to its supply and monitoring
equipment as described in 5.1.2.
5.3.2.4 Conditioning
The following conditioning shall be applied:
Temperature: (+ 55 ± 2) °C
Duration: 16 h
5.3.2.5 Measurements during conditioning
The specimen shall be monitored during the conditioning period to detect any unwanted or unspecified
functioning.
During the last hour of the conditioning period, a functional test shall be conducted as described in 5.1.4.
5.3.2.6 Final measurements
After a recovery period of at least 1 h at laboratory conditions, the functional test shall be conducted as
described in 5.1.4.
5.3.3 Requirements
No unwanted or unspecified function shall occur during conditioning.
In the functional tests, the specimen shall function correctly as specified by the manufacturer.
5.4 Cold (operational)
5.4.1 Object
To demonstrate the ability of the input/output device to function correctly at low ambient temperatures
appropriate to the anticipated service environment.
5.4.2 Test procedure
5.4.2.1 Reference
The test apparatus and procedure shall be as described in EN 60068-2-1, Test Ab and as described in 5.4.2.2
to 5.4.2.6.
5.4.2.2 Initial measurements
Before conditioning, the functional test shall be conducted as described in 5.1.4.
5.4.2.3 State of the specimen during conditioning
The specimen shall be mounted as described in 5.1.3 and shall be connected to its supply and monitoring
equipment as described in 5.1.2.
5.4.2.4 Conditioning
The following conditioning shall be applied:
Temperature: (−10 ± 3) °C
Duration: 16 h
5.4.2.5 Measurements during conditioning
The specimen shall be monitored during the conditioning period to detect any unwanted or unspecified
functioning.
During the last hour of the conditioning period, a functional test shall be conducted as described in 5.1.4.
5.4.2.6 Final measurements
After a recovery period of at least 1 h at laboratory conditions, the functional test shall be conducted as
described in 5.1.4.
5.4.3 Requirements
No unwanted or unspecified function shall occur during conditioning.
In the functional tests, the specimen shall function correctly as specified by the manufacturer.
5.5 Damp heat, cyclic (operational)
5.5.1 Object
To demonstrate the ability of the input/output device to function correctly at high relative humidity (with
condensation), which may occur for short periods in the anticipated service environment.
5.5.2 Test procedure
5.5.2.1 Reference
The test apparatus and procedure shall be generally as described in EN 60068-2-30, Test Db, using the
variant 1 test cycle and controlled recovery conditions, and as described in 5.5.2.2 to 5.5.2.6.
5.5.2.2 Initial measurements
Before conditioning, the functional test shall be conducted as described in 5.1.4.
5.5.2.3 State of the specimen during conditioning
The specimen shall be mounted as described in 5.1.3 and shall be connected to its supply and monitoring
equipment as described in 5.1.2.
5.5.2.4 Conditioning
The following conditioning shall be applied:
Lower temperature: (25 ± 3) °C
Upper temperature: (40 ± 2) °C
Relative humidity:
at lower temperature > 95 %
at upper temperature (93 ± 3) %
Number of cycles: 2
5.5.2.5 Measurements during conditioning
The specimen shall be monitored during the conditioning period to detect any unwanted or unspecified
functioning.
During the last hour of the conditioning period, a functional test shall be conducted as described in 5.1.4.
5.5.2.6 Final measurements
After the recovery period, the functional test shall be conducted as described in 5.1.4.
5.5.3 Requirements
No unwanted or unspecified function shall occur during conditioning.
In the functional tests, the specimen shall function correctly as specified by the manufacturer.
5.6 Damp heat, steady state (endurance)
5.6.1 Object
To demonstrate the ability of the input/output device to withstand the long term effects of humidity in the
service environment (e.g. changes in electrical properties of materials, chemical reactions involving moisture
and galvanic corrosion).
5.6.2 Test procedure
5.6.2.1 Reference
The test apparatus and procedure shall be as described in IEC 60068-2-78, Test Cab and as described in
5.6.2.2 to 5.6.2.5.
5.6.2.2 Initial measurements
Before conditioning, the functional test shall be conducted as described i
...