EN IEC 63327:2021

SLOVENSKI STANDARD
01-september-2021
Avtomatski stroji za nego tal za komercialno uporabo - Posebne zahteve
Automatic floor treatment machines for commercial use - Particular requirements
Ta slovenski standard je istoveten z: EN IEC 63327:2021
ICS:
97.080 Aparati za čiščenje Cleaning appliances
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 63327

NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2021
ICS 13.120; 97.080
English Version
Automatic floor treatment machines for commercial use -
Particular requirements
(IEC 63327:2021)
Machines automatiques de traitement des sols à usage Automatische Bodenbehandlungsmaschinen für den
commercial - Exigences particulières gewerblichen Gebrauch - Besondere Anforderungen
(IEC 63327:2021) (IEC 63327:2021)
This European Standard was approved by CENELEC on 2021-06-08. 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 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63327:2021 E
European foreword
The text of document 61J/734/CDV, future edition 1 of IEC 63327, prepared by SC 61J "Electrical
motor-operated cleaning appliances for commercial use" of IEC/TC 61 "Safety of household and
similar electrical appliances" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 63327:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022-03-08
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-06-08
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 63327:2021 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60068-2-78:2012 NOTE Harmonized as EN 60068-2-78:2013 (not modified)
IEC 60204-1:2016 NOTE Harmonized as EN 60204-1:2018 (modified)
IEC 60335 (series) NOTE Harmonized as EN 60335 (series)
IEC 60335-2-2 NOTE Harmonized as EN 60335-2-2
IEC 60335-2-10:2002 NOTE Harmonized as EN 60335-2-10:2003 (not modified)
IEC 60335-2-29:2016 NOTE Harmonized as EN 60335-2-29:— (not modified)
IEC 60335-2-100 NOTE Harmonized as EN 50636-2-100
IEC 60601-1 NOTE Harmonized as EN 60601-1
IEC 61508 (series) NOTE Harmonized as EN 61508 (series)
IEC 62885-9:2019 NOTE Harmonized as EN IEC 62885-9:2019 (not modified)
ISO 3691-4 NOTE Harmonized as EN ISO 3691-4
ISO 3743-1:2010 NOTE Harmonized as EN ISO 3743-1:2010 (not modified)
ISO 3744:2010 NOTE Harmonized as EN ISO 3744:2010 (not modified)

To be published. Stage at the time of publication: FprEN 60335-2-29:2020.
ISO 4871:1996 NOTE Harmonized as EN ISO 4871:2009 (not modified)
ISO 9614-2:1996 NOTE Harmonized as EN ISO 9614-2:1996 (not modified)
ISO 11203:1995 NOTE Harmonized as EN ISO 11203:2009 (not modified)
ISO/TR 11688-1 NOTE Harmonized as EN ISO 11688-1
ISO 13482:2014 NOTE Harmonized as EN ISO 13482:2014 (not modified)
ISO 13732-1 NOTE Harmonized as EN ISO 13732-1
ISO 13856-3:2013 NOTE Harmonized as EN ISO 13856-3:2013 (not modified)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60335-1 2020 Household and similar electrical EN IEC 60335-1 —
appliances - Safety - Part 1: General
requirements
IEC 60335-2-69 2021 Household and similar electrical - -
appliances - Safety - Part 2-69: Particular
requirements for wet and dry vacuum
cleaners, including power brush, for
commercial use
IEC 60335-2-72 2021 Household and similar electrical - -
appliances - Safety - Part 2-72: Particular
requirements for floor treatment machines
with or without traction drive, for
commercial use
IEC 61032 - Protection of persons and equipment by EN 61032 -
enclosures - Probes for verification
IEC 61058-1 - Switches for appliances - Part 1: General EN IEC 61058-1 -
requirements
IEC 61770 2008 Electric appliances connected to the EN 61770 2009
water mains - Avoidance of
backsiphonage and failure of hose-sets
- - + AC 2011
- - + A11 2018
IEC 62061 - Safety of machinery - Functional safety of EN IEC 62061 -
safety-related control systems
ISO 13849-1 - Safety of machinery - Safety-related parts EN ISO 13849-1 -
of control systems - Part 1: General
principles for design
To be published. Stage at the time of publication: FprEN IEC 60335-1:2020.
Publication Year Title EN/HD Year
ISO 13857 2019 Safety of machinery - Safety distances to EN ISO 13857 2019
prevent hazard zones being reached by
upper and lower limbs
ISO 18646-1 2016 Robotics - Performance criteria and - -
related test methods for service robots -
Part 1: Locomotion for wheeled robots

IEC 63327 ®
Edition 1.0 2021-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Automatic floor treatment machines for commercial use –

Particular requirements
Machines automatiques de traitement des sols à usage commercial –

Exigences particulières
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.120; 97.080 ISBN 978-2-8322-9763-6

– 2 – IEC 63327:2021 © IEC 2021
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 7
3 Terms and definitions . 8
4 General requirements . 11
5 General conditions for the tests . 11
6 Starting of motor operated appliances . 11
7 Stability and mechanical hazards . 12
8 Construction . 15
Annexes . 17
Annex FF (normative) Additional requirements for automatic floor treatment machines
not equipped with a manual mode . 18
Annex GG (normative) Requirements for docking stations for automatic floor treatment
machines for commercial use . 20
Annex HH (normative) Requirements to avoid backsiphonage at docking stations . 31
Annex II (informative) Emission of acoustical noise of docking stations . 32
Annex JJ (informative) Alternative route to fulfil safety critical functions . 34
Bibliography . 35

Figure 1 – Measurement of confined space speed . 16
Figure 2 – Confined space, stopping zone, and contact zone . 16
Figure 3 – Obstacle positioning during docking process . 16

Table 1 – Minimum required performance levels . 13
Table GG.1 – Degree of protection against harmful ingress of water . 21
Table JJ.1 – Safety functions . 34

IEC 63327:2021 © IEC 2021 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AUTOMATIC FLOOR TREATMENT MACHINES FOR COMMERCIAL USE –
PARTICULAR REQUIREMENTS
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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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.
IEC 63327 has been prepared by subcommittee 61J: Electrical motor-operated cleaning
appliances for commercial use, of IEC technical committee 61: Safety of household and
similar electrical appliances. It is an International Standard.
The text of this International Standard is based on the following documents:
CDV Report on voting
61J/734/CDV 61J/747A/RVC
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.

– 4 – IEC 63327:2021 © IEC 2021
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement,
available at www.iec.ch/members_experts/refdocs. The main document types developed by
IEC are described in greater detail at www.iec.ch/standardsdev/publications.
The requirements for the construction and testing covered by this document are applied in
addition to the particular requirements for floor treatment machines with or without traction
drive, for commercial use given in IEC 60335-2-72:2021.
NOTE 1 The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
– notes: in small roman type.
Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the
associated noun are also in bold.
NOTE 2 The 100 numbering is applied in certain clauses of this standard as these are additions to certain existing
clauses of IEC 60335-1, IEC 60335-2-69, and IEC 60335-2-72.
NOTE 3 The 200 numbering in certain clauses of this standard is applied to avoid overlap with the numbering of
the corresponding clauses of IEC 60335-1, IEC 60335-2-69, and IEC 60335-2-72.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
IEC 63327:2021 © IEC 2021 – 5 –
INTRODUCTION
It has been assumed in the drafting of this International Standard that the execution of its
provisions is entrusted to appropriately qualified and experienced persons.
This standard recognizes the internationally accepted level of protection against hazards such
as electrical, mechanical, thermal, fire and radiation of appliances when operated as in
normal use taking into account the manufacturer's instructions. It also covers abnormal
situations that can be expected in practice and takes into account the way in which
electromagnetic phenomena can affect the safe operation of appliances.
This standard takes into account the requirements of IEC 60364 as far as possible so that
there is compatibility with the wiring rules when the appliance is connected to the supply
mains. However, national wiring rules may differ.
This standard is a product family standard dealing with the safety of appliances and takes
precedence over horizontal and generic standards covering the same subject.
NOTE Horizontal and generic standards covering a hazard are not applicable since they have been taken into
consideration when developing the general and particular requirements for the IEC 60335 series of standards. For
example, in the case of temperature requirements for surfaces on many appliances, generic standards, such as
ISO 13732-1 for hot surfaces, are not applicable in addition to Part 1 or part 2 standards.
An appliance that complies with the text of this standard will not necessarily be considered to
comply with the safety principles of the standard if, when examined and tested, it is found to
have other features that impair the level of safety covered by these requirements.
An appliance employing materials or having forms of construction differing from those detailed
in the requirements of this standard may be examined and tested according to the intent of
the requirements and, if found to be substantially equivalent, may be considered to comply
with the standard.
– 6 – IEC 63327:2021 © IEC 2021
AUTOMATIC FLOOR TREATMENT MACHINES FOR COMMERCIAL USE –
PARTICULAR REQUIREMENTS
1 Scope
This International Standard deals with the safety of powered automatic floor treatment
machines intended for commercial use indoors for the following applications:
– sweeping,
– scrubbing,
– wet or dry pick-up,
– polishing,
– application of wax, sealing products and powder-based detergents,
– shampooing
of floors.
The requirements given by this standard are applied in addition to the requirements for
commercial floor treatment machines in IEC 60335-2-72, as far as applicable.
For automatic floor treatment machines solely designed for wet or dry pick-up, additional or
modified requirements of IEC 60335-2-69 where stated are applicable.
Machines covered by this standard can operate in automatic or manual mode.
Modified requirements are given in Annex FF of this standard for automatic floor treatment
machines not equipped with a manual mode.
The automatic floor treatment machines covered by this standard are designed to avoid
hazardous contact with persons in the environment applied. It is recognized that automatic
floor treatment machines for commercial use might require operation within close proximity
to large groups of people, such as in shopping malls and schools.
Throughout this standard, the term “machine” is used to refer to an automatic floor
treatment machine.
The following power systems are covered:
– rechargeable batteries that are recharged by built-in battery chargers or off-board
battery chargers which may be incorporated within the circuitry of the machine, or
mounted on the machine and incorporated within the enclosure of the automatic floor
treatment machine; or powered by batteries that need to be removed to be recharged
with a charger that is external to the machine,
– Other systems are under consideration.
This standard does not apply to
– vacuum cleaners and water-suction cleaning appliances and automatic battery-operated
cleaners for household use (IEC 60335-2-2);
– floor treatment machines and wet scrubbing machines for household use
(IEC 60335‑2‑10);
– battery chargers (IEC 60335-2-29);

IEC 63327:2021 © IEC 2021 – 7 –
– floor treatment machines for commercial use (IEC 60335-2-67);
– spray extraction machines for commercial use (IEC 60335-2-68);
– road sweepers;
NOTE 101 In Europe, the EN 17106 series covers road sweepers.
– machines designed for use on slopes with a gradient exceeding 20 %;
– machines equipped with a power take-off (PTO);
– machines designed for use in corrosive or explosive environments (dust, vapour or gas);
– machines designed for use in vehicles or on board of ships or aircraft.
– vacuum cleaners designed for pickup of combustible dust;
– appliances for medical purposes (IEC 60601-1);
– driverless industrial trucks and their systems (ISO 3691-4);
– robots and robotic devices: Safety requirements of personal care robots (ISO 13482)
– machines with parts that extend beyond the contact zone of the machine;
NOTE 102 Components of the machine that operate outside the contact zone can be evaluated differently.
– machines designed for picking up liquids with a flash point below 55 °C.
NOTE 103 The flash point temperature limit can vary in different countries. National regulations will need to be
taken into account.
NOTE 104 Attention is drawn to the fact that in many countries additional requirements on the safe use of the
equipment covered can be specified by the national health authorities, the national authorities responsible for the
protection of labour, the national water supply authorities and similar authorities.
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.
IEC 60335-1:2020, Household and similar electrical appliances – Safety – Part 1: General
requirements
IEC 60335-2-69:2021, Household and similar electrical appliances – Safety – Part 2-69:
Particular requirements for wet and dry vacuum cleaners, including power brush, for
commercial use
IEC 60335-2-72:2021, Household and similar electrical appliances – Safety – Part 2-72:
Particular requirements for floor treatment machines with or without traction drive, for
commercial use
IEC 61032, Protection of persons and equipment by enclosures – Probes for verification
IEC 61058-1, Switches for appliances – Part 1: General requirements
IEC 61770:2008, Electric appliances connected to the water mains – Avoidance of
backsiphonage and failure of hose-sets
IEC 62061, Safety of machinery – Functional safety of safety-related control systems
ISO 13849-1, Safety of machinery – Safety-related parts of control systems – Part 1: General
principles for design
– 8 – IEC 63327:2021 © IEC 2021
ISO 13857:2019, Safety of machinery – Safety distances to prevent hazard zones being
reached by upper and lower limbs
ISO 18646-1:2016, Robotics – Performance criteria and related test methods for service
robots – Part 1: Locomotion for wheeled robots
3 Terms and definitions
Clause 3 of IEC 60335-2-69:2021 and IEC 60335-2-72:2021 applies, except as follows:
NOTE The 200 numbering in Clause 3 of this standard is applied to avoid overlap with the numbering of Clause 3
of IEC 60335-2-69 and IEC 60335-2-72.
Addition:
3.201
automatic floor treatment machine
machine that operates automatically on a defined working area and that may also be able to
be operated in a manual mode
Note 1 to entry: Definition of the work area and floor surface can be done by operator action, (temporary)
physical limitations or by autonomous (initial) exploratory mode of the machine.
3.202
type 1 machine
automatic floor treatment machine having
– a maximum rated automatic speed not exceeding 3 km/h, and
– a height during normal operation not exceeding 50 cm above the ground, and
– a mass during normal operation not exceeding 20 kg
Note 1 to entry: If a GVW is available, the mass is replaced by this value.
3.203
type 2 machine
automatic floor treatment machine other than a type 1 machine
3.204
control system
set of logic control and power functions which allows to monitor and control the mechanical
structure of the machine and to communicate with the environment (equipment and
operators)
[SOURCE: ISO 8373:2012, 2.7 modified – "monitoring" has been changed to "to monitor",
"robot" has been changed to "machine", "communication" has been changed to
"communicate" and "users" has been changed to "operators"]
3.205
manual mode
operating mode in which the machine can be operated by, for example, pushbuttons or a
joystick and that excludes operation in automatic mode
Note 1 to entry: It includes manual cleaning and transportation modes.
[SOURCE: ISO 8373:2012, 5.3.10.2, modified – "robot" has been changed to "machine",
"operation" has been changed to "mode" and the note to entry has been added]

IEC 63327:2021 © IEC 2021 – 9 –
3.206
automatic mode
operating mode in which the machine accomplishes its assigned mission without direct human
intervention
3.207
locked state
condition in which the driving wheels are being prevented from moving with a locking
mechanism that can be unlocked by the intervention of the authorized operator only
Note 1 to entry: A locking mechanism can be the traction drive or the service brake.
3.208
rated automatic speed
maximum speed of the machine during operation in automatic mode in open space
3.209
access control
security measure enabling the operator to gain access to the control of the machine
Note 1 to entry: It includes, but is not limited to, a key-protected control device.
3.210
stopping distance
maximum distance travelled by the machine between the initiation of the stop and the
complete standstill
Note 1 to entry: The stopping distance in 7.3 includes machine reaction time.
[SOURCE: ISO 18646-1:2016, 3.10, modified – "mobile platform origin" has been changed to
"machine", "full stop of the mobile platform" has been changed to "complete standstill" and the
note to entry has been added]
3.211
stop category 0
stopping by immediate removal of power to the machine actuators (i.e., an uncontrolled stop)
Note 1 to entry: It is understood that operator attention will be required to re-enable power to the actuators.
[SOURCE: IEC 60204-1:2016, 9.2.2, modified – Note to entry has been added]
3.212
stop category 1
controlled stop with power available to the machine actuators to achieve the stop and then
removal of power when the stop is achieved
Note 1 to entry: It is understood that operator attention will be required to re-enable power to the actuators.
[SOURCE: IEC 60204-1:2016, 9.2.2, modified – Note to entry has been added]
3.213
stop category 2
controlled stop with power left available to the machine actuators
Note 1 to entry: It is understood that operator attention is not required to re-enable power to the actuators.
[SOURCE: IEC 60204-1:2016, 9.2.2, modified – "remaining" has been changed to "left" and
the note to entry has been added]

– 10 – IEC 63327:2021 © IEC 2021
3.214
stopping zone
fixed or variable-sized zone in which the machine has the capabilities to avoid a static object
Note 1 to entry: See Figure 2.
3.215
contact zone
boundary in which the machine is assumed to be in contact with the object, and the allowable
motion of the machine could be hazardous at that boundary
Note 1 to entry: See Figure 2.
Note 2 to entry: Hazardous exposed moving side brushes are included in the contact zone.
3.216
open space
area that is not considered to be a confined space
3.217
confined space
area in which the distance from the nearest continuous wall or obstacle is less than 0,5 m
from the machine transport width parallel to the direction of motion
Note 1 to entry: See Figure 2.
3.218
machine transport width
minimum width the machine can pass through to indicate the maneuverability of the machine
during transport
Note 1 to entry: It does not indicate the effective cleaning width of the machine.
[SOURCE: IEC 62885-9:2019, Clause 7, modified – "not the effective cleaning width of the
machine" has been deleted and the note to entry has been added]
3.219
docking station
unit that may provide one or more of the following functions for the automatic floor
treatment machine:
– manual or automatic battery charging facilities,
– AC and/or DC power supply,
– filling water with or without detergents,
– filling detergents,
– filling water for wet batteries,
– emptying of wastewater, dust, coarse dirt,
– communication connections,
– navigation information
Note 1 to entry: A docking station is also known as a base unit.

IEC 63327:2021 © IEC 2021 – 11 –
4 General requirements
The machine shall be constructed as follows:
The machine when in manual mode shall fulfil the requirements for commercial floor
treatment machines according to IEC 60335-2-72:2021 unless stated otherwise in this
standard. Further requirements for the automatic mode are given within the main body of this
standard. Machines shall be constructed in their manual and automatic mode so that they
function safely to cause no danger to persons or surroundings during normal use, even in the
event of carelessness, and during installation, adjusting, maintenance, cleaning, repairing, or
transportation. For ride-on machines in automatic mode, operator presence on the
machine shall be prevented either by sensing which stops the machine from operating, or
design features which prevent operator presence.
Modified requirements to IEC 60335-2-72:2021 are given in normative Annex FF of this
standard for automatic floor treatment machines not equipped with a manual mode.
For the purposes of this standard, the term ‘appliance’ as used in IEC 60335-1:2020 is to be
read as ‘machine’.
Safety of the machine shall not depend on remote operation. Resetting of stop category 0 or
stop category 1 shall not be possible remotely.
Compliance is checked by the following:
The tests of this standard shall be performed after disabling remote operations.
5 General conditions for the tests
5.1 The following test obstacles, taken from ISO 13856-3, shall be covered in black felt or
coarse fabric with a reflectance between 5 % and 10 %:
a) Obstacle 1 – a cylinder with a diameter of 200 mm and a length of 600 mm, placed
horizontally; and
b) Obstacle 2 – a cylinder with a diameter of 70 mm and a height of 400 mm, placed
vertically.
NOTE To perform the test, the obstacle can be attached to a flat plate with a handle or a cord can be used to
place the obstacle.
5.2 Tests shall be conducted at lighting level between 100 lx and 1000 lx.
6 Starting of motor operated appliances
It shall only be possible to start the type 2 machine in automatic mode from initial start-up
by intended actuation of an access control provided for the purpose. The same requirement
applies when restarting the type 2 machine in automatic mode after a stop category 0. This
requirement only applies to components where the unexpected starting might cause a hazard.
It does not apply to components such as suction units, pumps, etc.
Compliance is checked by inspection and test.

– 12 – IEC 63327:2021 © IEC 2021
7 Stability and mechanical hazards
7.1 Machines in automatic mode, operating in an open space environment, shall not
exceed 6 km/h. Machines in automatic mode operating in a confined space environment
shall not exceed 4 km/h.
NOTE 1 As specified in this standard, manual mode speed can be higher than automatic mode speed.
Compliance for machine speed operating in confined space environment is checked by
measurement in accordance with the test procedure as described below.
The test area of the confined space environment consists of two continuous walls or
obstacles, each with a minimum length equal to the machine transport length and a minimum
height of 1 m. One wall is located on one side of the machine, and the other wall is located on
the opposite side of the machine starting from the location where the first wall ends. The two
walls are placed in the direction of travel of the machine so that they are within the confined
space distance on each side from the machine transport width. Sensors are allocated at
each end of the test area to measure the start and finish of the machine traversal.
NOTE 2 An example of test set up is shown in Figure 1.
The machine, loaded to the GVW rating, traverses towards the confined space test set-up
area at the maximum open space speed and enters the confined space test area. The
confined space speed is measured from the start and end of the machine traversal through
the confined space test set-up area. The average speed shall be measured over three
successful speed measurements.
Compliance is checked by measurement in accordance with ISO 18646-1:2016, Clause 5,
with the machine loaded to the GVW rating.
7.2 Machines that can function in manual mode as ride-on machine or a walk-behind
machine with traction drive shall not be possible to operate with the higher speed of manual
mode when operating in automatic mode.
Compliance is checked by inspection and measurement.
7.3 The maximum allowed stopping distance, S , shall be calculated using the following
a
formula:
S < 1,2 × V
a a
where
is stopping distance in automatic mode (m);
S
a
V is maximum rated automatic speed of the machine in the direction of test (m/s).
a
NOTE Stopping distance is based on a reaction time below 0,5 s.
Compliance is checked by functional test.
7.4 The detection system shall be capable of avoiding contact with obstacles in the
directions in which the machine is capable of motion at distances greater than S , as
a
calculated in 7.3, for the maximum speed the machine can travel in that direction. This
requirement is not applicable to type 1 machines not exceeding a speed of 1,5 km/h and to
automatic floor treatment machines during the docking process to the docking station.
Obstacles according 5.1 shall be used for testing.
Compliance is checked by functional test.

IEC 63327:2021 © IEC 2021 – 13 –
7.5 A machine shall not fall over abrupt surface elevation changes such as staircases,
unprotected drop-offs, and the like.
Compliance is checked by the following test: The machine shall be tested on a surface
(11 ± 1) cm above an adjacent surface. The lower surface shall be a minimum 1 m in length
from where it meets the upper surface; the lowest surface is concrete. The test shall be
conducted under the most unfavourable conditions, based on sensor positions, both starting
from rest and in motion towards the abrupt surface elevation change under normal operation
and at loaded to the GVW rating.
The machine shall be able to detect and stop in the presence of abrupt surface elevation
changes of (11 ± 1) cm or greater in all directions of travel.
7.6 The control system of safety-critical functions in the machine (i.e., electric, hydraulic,
pneumatic, and software) shall be designed so that they comply with the PL levels and
structures as described in ISO 13849-1. The tests of 7.1 to 7.5 and 7.7 to 7.10 shall be
conducted using only the control system of the safety-critical functions which meet the
requirements of 7.7. Software in programmable electronic circuits, necessary to fulfil the
safety critical functions and that can interfere with them, shall fulfil the requirements of
Annex R of IEC 60335-1:2020. References in R.2.2.5 and R.2.2.9 to Clause 19 shall instead
refer to 7.6 of this standard.
Alternative methods for determining the required safety integrity level/performance level, for
example IEC 62061, are acceptable in achieving the required risk reduction (see normative
Annex JJ). The safety-critical functions are identified in Table 1.
Table 1 – Minimum required performance levels
Type and purpose of safety-critical function (SCF) Minimum required performance level (PL) as
described in ISO 13849-1
Type 1 machines Type 2 machines
Prevent traversing over abrupt surface elevation changes PL = d PL = d
such as staircases, unprotected drop-offs, and the like
referred to in 7.5
Prevent intrusions into the stopping or contact zones to PL = b PL = d
prevent crushing of and collision with parts of the body and
objects referred in 7.7 to 7.11
Prevent exceeding the automatic mode speed referred to in PL = b PL = d
7.1 and 7.2
Provide locked state of drive wheels referred to in 7.8 PL = b PL = b
Provide desired switch-off of the machine, or emergency PL = b PL = c
switch-off
Provide desired stop category 0, 1, or 2 PL = b PL = d

7.7 In the initial start-up state, while the machine is at rest, each of the obstacles described
in 5.1 is placed in turn in contact with the machine at various locations representative of the
contact zone. The machine shall not initiate motion unless after selection of automatic mode
by an operator the machines moves directly away from the obstacle.
The machine shall not initiate motion, unless
– it moves directly away from the obstacle after automatic mode is initiated by the
operator, and
– it can determine that nothing is in the contact zone, through guards or sensing, in the
direction of motion without contacting the obstacle.

– 14 – IEC 63327:2021 © IEC 2021
This requirement is not applicable to type 1 machines not exceeding a speed of 1,5 km/h and
to automatic floor treatment machines during the docking process to the docking station.
Compliance is checked by functional test. Test duration is 5 min or less if the machine moves
away from the obstacle.
7.8 The machine shall monitor the operating status of all safety-related control parts of the
control system before starting and during operation.
Any detected failure in the safety-related parts of the control system shall result in a stop
category 0 or stop category 1 with the driving wheels in a locked state. The machine shall
require the intervention of the operator to restart.
The safety-related parts of the control system are the relevant parts of the safety-critical
functions (SCFs) identified in Table 1.
Compliance is checked by an evaluating system in accordance with Table 1.
7.9 The machine shall avoid contact with any static objects that enter the stopping zone.
When any obstacle described in 5.1 enters the stopping zone, at least a stop category 2 or
obstacle avoidance shall be initiated. This requirement is not applicable to type 1 machines
not exceeding a speed of 1,5 km/h and to automatic floor treatment machines during the
docking process to the docking station.
When a stop category 2 is achieved and the machine is at rest, the contact zone sensors
may be disabled.
NOTE When the obstacle is removed, the machine can resume movement automatically unless contact with the
obstacle is made.
Compliance is checked by the following test:
The machine is driven toward the test obstacles, at both confined space speed and rated
automatic speed. The obstacles are placed outside of the stopping zone ahead of the
machine. The machine shall avoid contact with any objects when entering the stopping
zone. When any obstacle described in 5.1 enters the stopping zone, at least a stop
category 2 or obstacle avoidance shall be initiated. Each obstacle shall be tested separately.
Test obstacle 1 shall be laying down and at 0°, 45°, and 90° to the path of the machine, at a
range greater than the machine safe stopping distance, and positioned at the left-most (one-
half the width of the machine from the centreline), right-most, and centre of the machine travel
path. Test obstacle 2 shall be set vertically at a range equivalent to the machine safe
stopping distance and positioned at the left-most, right-most, and centre of the machine path
(see Figure 2 for obstacle positioning).
7.10 Following a stop category 2, each of the obstacles described in 5.1 is placed in
contact with the machine at various locations representative of the contact zone. The
machine shall not initiate motion, unless the system ensures during motion to brake on time to
prevent further contact with the obstacle. This requirement is not applicable to type 1
machines not exceeding a speed of 1,5 km/h and to automatic floor treatment machines
during the docking process to the docking station.
Compliance is checked by functional test. Test duration is 5 min or less if the machine moves
away from the obstacle.
7.11 When either of the obstacles described in 5.1 enters the contact zone while the
machine is moving, a stop category 0 or stop category 1 shall be initiated. This requirement
is not applicable to type 1 machines not exceeding a speed of 1,5 km/h and to automatic
floor treatment machines during the docking process to the docking station.

IEC 63327:2021 © IEC 2021 – 15 –
Compliance is checked by the following test:
The obstacle is moved in front of the machine’s direction of motion inside the stopping zone.
The machine’s contact zone shall initiate a stop category 0 or stop category 1, due to
anticipated contact with the obstacle. When the obstacle is removed, the machine shall not
resume movement without operator intervention.
Requirements for machines intended to pick up hazardous dust are specified in
IEC 60335‑2‑69:2021, normative Annex A, Clause A.4 and normative Annex AA.
Requirements for machines intended to pick up dust in ESD protected areas, are specified in
IEC 60335-2-69:2021, normative Annex DD.
7.12 Automatic floor treatment machines intended to be used with docking stations and
able to perform an automatic docking process shall not pose a crushing hazard during the
docking process.
...