EN 1760-1:1997+A1:2009

SLOVENSKI STANDARD
01-maj-2009
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SIST EN 1760-1:2000
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Safety of machinery - Pressure sensitive protective devices - Part 1: General principles
for the design and testing of pressure sensitive mats and pressure sensitive floors
Sicherheit von Maschinen - Druckempfindliche Schutzeinrichtungen - Teil 1: Allgemeine
Leitsätze für die Gestaltung und Prüfung von Schaltmatten und Schaltplatten
Sécurité des machines - Dispositifs de protection sensibles à la pression - Partie 1:
Principes généraux de conception et d'essai des tapis et planchers sensibles à la
pression
Ta slovenski standard je istoveten z: EN 1760-1:1997+A1:2009
ICS:
13.110 Varnost strojev Safety of machinery
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 1760-1:1997+A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2009
ICS 13.110 Supersedes EN 1760-1:1997
English Version
Safety of machinery - Pressure sensitive protective devices -
Part 1: General principles for the design and testing of pressure
sensitive mats and pressure sensitive floors
Sécurité des machines - Dispositifs de protection sensibles Sicherheit von Maschinen - Druckempfindliche
à la pression - Partie 1: Principes généraux de conception Schutzeinrichtungen - Teil 1: Allgemeine Leitsätze für die
et d'essai des tapis et planchers sensibles à la pression Gestaltung und Prüfung von Schaltmatten und
Schaltplatten
This European Standard was approved by CEN on 26 March 1997 and includes Amendment 1 approved by CEN on 22 February 2009.

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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1760-1:1997+A1:2009: E
worldwide for CEN national Members.

Contents Page
Foreword .4
Introduction .6
1 Scope .6
2 Normative references .6
3 Definitions .8
4 Requirements . 10
4.1 General . 10
4.2 Actuating force . 10
4.3 Response time (see 7.5 for test method) . 12
4.4 Static loading (see 7.6 for test method) . 13
4.5 Number of operations (see 7.7 for test method) . 13
4.6 The output state of the sensor (see 7.8 for test method) . 13
4.7 Response of output signal switching device(s) to the actuating force (see 7.9 for test
method) . 13
4.8 Access for maintenance (see 7.10 for test method). 14
4.9 Adjustments (see 7.11 for test method) . 14
4.10 Connections (see 7.12 for test method) . 14
4.11 Environmental conditions (see 7.13 for test method) . 14
4.12 Power supply . 15
4.13 Electrical equipment (see 7.15 for test method) . 16
4.14 Enclosure (see 7.16 for test method) . 16
4.15 Categories for safety-related parts of control systems according to EN 954 (see 7.17 for
test method) . 17
4.16 Sensor fittings (see 7.1.2 for test method) . 17
4.17 Tripping (see 7.1.2 for test method) . 17
4.18 Slipperiness and softness of the sensor top surfaces (see 7.18 for test method) . 17
4.19 Additional coverings of top surfaces of sensor(s) (see 7.19 for test method) . 17
4.20 Failure due to blocking or wedging (see 7.20 for test method) . 17
5 Marking (see 7.1.2 for test method) . 18
5.1 The pressure sensitive mat or pressure sensitive floor shall be marked in accordance with
)
!6.4 of EN ISO 12100-2:2003, 6.4 b) of EN ISO 12100-2:2003/prA1:2008" and 18.1 of EN
60204-1:1992. . 18
5.2 Marking of the control unit . 18
5.3 Marking of the sensor . 18
5.4 All labels and markings shall be securely fixed and durable for the expected lifetime of the part
of the pressure sensitive mat or pressure sensitive floor to which it is attached (see EN 61310-
2). . 18
5.5 Component parts of the pressure sensitive mat or pressure sensitive floor that can be replaced
in accordance with the information for use shall be identifiable. . 18
6 Information for use . 18
6.1 General . 18
6.2 Instructions for use (see 7.1.2 for test method) . 18
7 Testing . 21
7.1 General . 21
7.2 Sensor test sample . 21
7.3 Test pieces for load tests . 22
7.4 Test no. 1 – Actuating force (requirements see 4.2) . 22
7.5 Test no. 2 – Response time (requirement see 4.3) . 26
7.6 Test no. 3 – Static loading (requirements see 4.4) . 27
7.7 Test no. 4 – Number of operations (requirements see 4.5) . 28
7.8 Test no. 5 – Output state of the sensor (requirements see 4.6) . 32
7.9 Test no. 6 – Response of output signal switching device to the actuating force
(requirements see 4.7) . 33
7.10 Test no. 7 – Access for maintenance (requirements see 4.8) . 33
7.11 Test no. 8 – Adjustments (requirements see 4.9) . 33
7.12 Test no. 9 – Connections (requirements see 4.10) . 33
7.13 Test no. 10 – Environmental conditions (requirements see 4.11) . 33
7.14 Test no. 11 – Electrical power supply (requirements see 4.12.1) . 35
7.15 Test no. 12 – Electrical equipment (requirements see 4.13) . 35
7.16 Test no. 13 – Enclosure (requirements see 4.14) . 35
7.17 Test no. 14 – Categories for safety-related parts of control systems according to EN 954
(requirements see 4.15) . 35
7.18 Test no. 15 – Slipperiness and softness of the sensor top surfaces (requirements see
4.18) . 35
7.19 Test no. 16 – Additional coverings of top surfaces of sensor(s) (requirements see 4.19) . 35
7.20 Test no. 17 – Failure due to blocking or wedging (requirements see 4.20) . 35
Annex A (normative) Timing diagrams for devices with and without reset . 36
Annex B (informative) Application notes . 39
B.1 Mounting surface (location) . 39
B.2 Size of the sensor . 39
B.3 Selection criteria . 39
B.4 Comparison between good and poor installation design . 41
Annex C (informative) Design notes . 43
C.1 General conditions . 43
C.2 Pressure sensitive mats . 43
C.3 Pressure sensitive floors . 45
Annex D (informative) Installation, commissioning and test . 48
D.1 General . 48
D.2 Installation . 48
D.3 Commissioning . 48
D.4 Regular inspection and tests . 49
D.5 Tests after maintenance . 49
Annex E (informative) Bibliography . 50
Annex ZA (informative) !Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/EC" . 51
Annex ZB (informative) !Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC" . 52

Foreword
This document (EN 1760-1:1997+A1:2009) has been prepared by Technical Committee CEN/TC 114 “Safety
of machinery”, the secretariat of which is held by DIN.
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 2009, and conflicting national standards shall be withdrawn at
the latest by December 2009.
This document includes Amendment 1, approved by CEN on 2009-02-22.
This document supersedes EN 1760-1:1997.
The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ".
!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 relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts of this
document."
This is the first part of a multi-part type B standard which will cover safety devices that detect the presence of
a person through the application of a pressure or force by a part of the person's body. After actuation the
safety devices give a stop command which is used by the control system of the machine to provide protection
for the person who caused the device to be actuated.
The other parts of the standard will cover:
Part 2: General principles for the design and testing of pressure sensitive edges and pressure sensitive
bars (in preparation)
Part 3: General principles for the design and testing of pressure sensitive bumpers (in preparation)
The informative annex A presents timing diagrams for devices with and without reset. The notes in informative
annex B provide guidance regarding application. It is recommended that the supplier and customer liaise to
examine carefully the constraints presented by the application before placing an order for the equipment.
The safeguarding of machinery !(see 3.20 of EN ISO 12100-1:2003)" can be achieved by many different
means. These means include guards which prevent access to the danger zone by means of a physical barrier
(e.g. fixed guards to !EN 953" and interlocking guards to EN 1088); and protective devices, (e.g. electro-
sensitive protective equipment to !EN 61496-1" and pressure-sensitive protective devices to this
standard).
Type C standards makers and designers of machinery/installations should consider the best way to achieve
the required level of safety taking into account the intended application and the results of the risk assessment
(see !EN ISO 14121-1").
The best solution may combine several of these different means. It is recommended that the
machinery/installation supplier and the user examine together carefully the existing constraints before making
their decision on the choice of safeguarding means.
The notes in informative annex C give guidance regarding the design of pressure sensitive mats and pressure
sensitive floors. Informative annex D gives guidance for installation, commissioning and testing. Informative
annex E contains bibliography.
This European Standard does not specify the dimensions or the configuration of the effective sensing area of
pressure sensitive mat(s) or floor(s) in relation to any particular application. However, there is a requirement
for the manufacturer of the safety device to provide sufficient information to enable the user (i.e. the
machinery manufacturer and/or the user of the machinery) to specify an adequate arrangement.
!deleted text"
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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and United Kingdom.

Introduction
Pressure sensitive protective devices are used in a wide variety of applications with different conditions of use
relating, for example, to extremes of loading, electrical, physical and chemical environments. They are
interfaced with the machine controls to ensure that the machine reverts to a safe condition if the pressure
sensitive device is actuated.
Each type of application presents particular hazards. It is not the intention of this standard to identify those
hazards nor to recommend specific methods of application to particular machines. This is normally the
function of machine specific standards.
1 Scope
This Standard specifies requirements for pressure sensitive mats and floors normally actuated by the feet for
use as safety devices to protect persons from dangerous machinery. The minimum safety requirements for
the performance, marking and documentation are given.
The Standard covers pressure sensitive mats and floors, regardless of type of energy used, e.g. electrical,
hydraulic, pneumatic or mechanical.
This standard covers mats and floors designed to detect:
a) Persons weighing more than 35 kg;
b) And persons (e.g. children) weighing more than 20 kg.
The detection of persons weighing less than 20 kg is not covered by this standard.
This European Standard does not specify the dimensions or the configuration of the effective sensing area of
pressure sensitive mat(s) or floor(s) in relation to any particular application.
2 Normative references
!The following referenced documents are indispensable for the application 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."
!deleted text"
!EN 953:1997, Safety of machinery – Guards – General requirements for the design and construction of
fixed and movable guards"
EN 954-1:1996, Safety of machinery – Safety-related parts of control systems – Part 1: General principles for
design
EN 982:1996, Safety of machinery – Safety requirements for fluid power systems and their components -
Hydraulics
EN 983:1996, Safety of machinery – Safety requirements for fluid power systems and their components –
Pneumatics
!EN 999", Safety of machinery – The positioning of protective equipment in respect of approach speeds
of parts of the human body
!deleted text"
EN 1088:1995, Safety of machinery – Interlocking devices associated with guards – Principles for design and
selection
!deleted text"
EN 50081, Electromagnetic compatibility – Generic emission standard
EN 50082, Electromagnetic compatibility – Generic immunity standard
EN 60204-1:1992, Safety of machinery; electrical equipment of machines; part 1: general requirements
(IEC 204-1:1992, modified)
EN 60439-1:1994, Low-voltage switchgear and controlgear assemblies; part 1: type-tested and partially type-
tested assemblies (IEC 439-1:1992 + corrigendum 1993)
EN 60529, Degrees of protection provided by enclosures (IP code) (IEC 529:1989)
EN 61000-4-2, Electromagnetic compatibility (EMC) – Part 4: Testing and measurement techniques –
Section 2: Electrostatic discharge immunity test – Basic EMC publication (IEC 1000-4-2:1995)
EN 61000-4-3, Electromagnetic compatibility (EMC) – Part 4: Testing and measurement techniques –
Section 3: Radiated, radio-frequency, electromagnetic field immunity test (IEC 1000-4-3:1995, modified)
EN 61000-4-4, Electromagnetic compatibility (EMC) – Part 4: Testing and measurement techniques –
Section 4: Electrical fast transient/burst immunity test – Basic EMV publication (IEC 1000-4-4:1995)
EN 61000-4-5, Electromagnetic compatibility (EMC) – Part 4: Testing and measurement techniques –
Section 5: Surge immunity test (IEC 1000-4-5:1995)
EN 61310-2, Safety of machinery – Indication, marking and actuation – Part 2: Requirements for marking
(IEC 1310-2:1995)
!EN ISO 12100-1:2003, Safety of machinery – Basic concepts, general principles for design – Part 1: Basic
terminology, methodology (ISO 12100-1:2003)
EN ISO 12100-2:2003, Safety of machinery – Basic concepts, general principles for design – Part 2: Technical
principles (ISO 12100-2:2003)"
!EN ISO 14121-1, Safety of machinery – Risk assessment – Part 1: Principles (ISO 14121-1:2007)"
!EN ISO 14122-2, Safety of machinery – Permanent means of access to machinery – Part 2: Working
platforms and walkways (ISO 14122-2:2001)"
IEC 68-2-3:1969, Basic environmental testing procedures – Part 2: Tests. Test Ca: Damp heat, steady state
IEC 68-2-6:1995, Environmental testing – Part 2: Tests – Test Fc: Vibration (sinusoidal)
IEC 68-2-14:1984, Basic environmental testing procedures – Part 2: Tests. Test N: Change of temperature
ISO 6431:1992, Pneumatic fluid power; single rod cylinders, 1000 kPa (10 bar) series, with detachable
mountings, bores from 32 mm to 320 mm; mounting dimensions
3 Definitions
!For the purposes of this document, the terms and definitions given in EN ISO 12100-1:2003 and the
following apply."
3.1
pressure sensitive mat
a safety device !(see 3.26.5 of EN ISO 12100-1:2003)" which detects a person standing on it or who
steps onto it. It comprises a sensor(s) which responds to the application of pressure and a control unit, and
one or more output signal switching device(s) (see figure 1).
In a pressure sensitive mat the effective sensing area is deformed locally when the sensor(s) is actuated.
3.2
pressure sensitive floor
a safety device !(see 3.26.5 of EN ISO 12100-1:2003)" which detects a person standing on it or who
steps onto it. It comprises a sensor(s) which responds to the application of pressure and a control unit, and
one or more output signal switching device(s).
In a pressure sensitive floor the effective sensing area is moved as a whole when the sensor(s) is actuated.
3.3
sensor
that part of the pressure sensitive mat or pressure sensitive floor which contains an effective sensing area on
which the application of an actuating force causes the signal from the sensor to the control unit to change
state
3.4
effective sensing area
that part of the top surface area of the sensor or a combination of sensors of the pressure sensitive mat or
pressure sensitive floor within which a response to an actuating force (see 4.2) will take place
3.5
control unit
The device that responds to the condition of the sensor(s) and controls the state of the output signal switching
device. It may also monitor the integrity of the pressure sensitive mat or pressure sensitive floor (see
reference to categories EN 954-1) and it may contain facilities to process a reset signal. The control unit may
be integrated with the machine control system.
3.6
output signal switching device
That part of the pressure sensitive mat or pressure sensitive floor which when the sensor or monitoring
function means is actuated responds by producing an OFF state. The output signal switching device may be
integrated with the machine control system.
3.7
actuating force
any force which produces a pressure on the effective sensing area to create an OFF state in the output signal
switching device
3.8
reset
the function which permits an ON state in the output signal switching devices, providing that certain conditions
are met
3.9
ON state of output signal switching device(s)
a state where the output circuit(s) is complete and the flow of current or fluid is interrupted
3.10
OFF state of output signal switching device(s)
a state where the output circuit(s) is broken and the flow of current or fluid is interrupted
3.11
response time
the time between the start of the application of a force to the effective sensing area and the start of the OFF
state of the output signal switching device (see 4.3)
3.12
dead zone
that part of the top surface area of the sensor outside the effective sensing area

1 Pressure sensitive mat or floor output signal processing
6 Actuating force
7 Sensor output
8 ON state/OFF state signal
9 Manual reset signal (where appropriate alternative to A)
10 Reset signal from machine control system (where appropriate)
11 Monitoring signals (optional)
A Manual reset signal to the machine control system (where appropriate alternative to 9).
a Machine control system(s)
Figure 1 — Pressure sensitive mat or pressure sensitive floor interfaced with a machine
4 Requirements
4.1 General
Pressure sensitive mats and pressure sensitive floors shall be able to detect a person who is standing on, or
who steps onto the effective sensing area.
4.2 Actuating force
4.2.1 Single sensor (see 7.4.1 and 7.4.2 for test method)
The pressure sensitive mat or pressure sensitive floor shall not respond to the actuating forces stated in table
1 when the test piece (see figure 2) is applied over the effective sensing area at a maximum speed of 2 mm/s
within the operating temperature range.
Test pieces 1, 2 and 3 apply to pressure sensitive mats and pressure sensitive floors designed to detect
persons weighing more than 35 kg. Test piece 4 shall additionally be applied to pressure sensitive mats and
pressure sensitive floors designed to detect persons (e.g. children) weighing more than 20 kg.
Table 1 — Actuating force
Application Test piece Actuating force
Number d N
mm
For pressure sensitive 1 11 300
mats and pressure
2 80 300
sensitive floors designed
3 200 600
to detect persons
weighing more than
35 kg
Additional test for 4 40 150
pressure sensitive mats
and pressure sensitive
floors designed to detect
persons (e.g. children)
weighing more than
20 kg
4.2.2 Combinations of sensors (see 7.4.3 and 7.4.4 for test methods)
Where an effective sensing area is built up of more than one sensor, joints and junctions shall fulfil the
requirements of 4.2.1 except that only test piece 2 in table 1 applies to pressure sensitive mats and pressure
sensitive floors designed to detect persons weighing more than 35 kg.
Where pressure sensitive mats and pressure sensitive floors are designed to detect persons (e.g. children)
weighing 20 kg or more only test pieces 2 and 4 shall apply.
For other parts of the effective sensing area, 4.2.1 shall apply (see table 1).
Dimensions in millimetres
Test piece 1      Test pieces 2, 3 and 4

Test piece 5      Test piece 6
A Mounting proposal only
B Rubber "shoe", 60 Shore A + 5 Shore A, fixed with adhesive
C Steel
For d see table 1
Figure 2 — Test pieces
4.3 Response time (see 7.5 for test method)
The response time shall be stated by the manufacturer and shall not exceed 200 ms over the operating
temperature range. The response time is the time between (a) and (b) where:
a) Is when a test piece touches vertically the effective sensing area at a velocity of 0,25 m/s; and
b) Is the start of the OFF state of the output signal switching device (see figures A.1, A.2 and A.3).
NOTE The 200 ms limit is specified to prevent the safety device from being defeated by the application of short
stepping impulses.
4.4 Static loading (see 7.6 for test method)
4.4.1 After the application of a static force of 2000 N + 50 N within the effective sensing area through test
piece 2 (see figure 2), for a period of 8 h, the output signal switching device shall change state within 2 min
after the removal of the force and the deformation shall not be more than 2 mm depth at the lowest part of the
top surface after 1 h.
4.4.2 After the application of a static force of 750 N + 20 N within the effective sensing area at another
location to that used in 4.4.1 through test piece 1 (see figure 2) for a period of 8 h, the deformation shall not be
more than 2 mm at the lowest part of the top surface after 1 h.
4.5 Number of operations (see 7.7 for test method)
4.5.1 A pressure sensitive mat or pressure sensitive floor shall perform its function for the typical expected
number of operations.
4.5.1.1 The expected number of operations for the pressure sensitive mat or pressure sensitive floor is
100 000 operations in each of five locations (500 000 operations in total). If the effective sensing area consists
of a combination of sensors, this requirement shall apply to the combination of sensors.
4.5.1.2 In addition, the expected number of operations for the sensor alone is a further one million
operations in one other location.
4.5.2 When the requirements of 4.4 and 4.5.1 have been met, the pressure sensitive mat or pressure
sensitive floor shall still meet the requirements of 4.2 and 4.3.
4.6 The output state of the sensor (see 7.8 for test method)
The sensor output signal shall change to a value or state which causes the output signal switching device(s)
to change to the OFF state when any actuating force is applied to the effective sensing area. This value or
state shall maintain the output signal switching device(s) in the OFF state until the actuating force is removed
(see figures A.1, A.2 and A.3).
4.7 Response of output signal switching device(s) to the actuating force (see 7.9 for test
method)
4.7.1 General
When any actuating force is applied to the effective sensing area the output signal switching device(s) shall
change from an "ON" state to an "OFF" state. The output signal switching device shall remain in the OFF state
for at least as long as the actuating force is applied.
4.7.2 Device with reset
For a pressure sensitive mat or pressure sensitive floor with reset the reset signal shall be manually applied
either directly to the control unit of the safety device or alternatively via the machine control system (see
figure 1).
The reset shall perform 2 functions:
a) Start inhibit interlock
At power ON the output signal switching device(s) shall remain in the OFF state until the reset signal is
applied.
b) Re-start inhibit interlock
After the actuating force has been removed, the output of the output signal switching device(s) shall only
change to an "ON" state after the application of a reset signal.
If the reset signal is applied continuously before or while the actuating force is applied, the output of the output
signal switching device(s) shall not change to an ON state when the actuating force is removed (see figures
A.1 and A.2).
The reset signal shall control either the output of the sensor and the output signal switching device(s) (see
figure A.1) or it shall control the output of the output signal switching device(s) only (see figure A.2).
4.7.3 Device without reset
For a pressure sensitive mat or pressure sensitive floor without reset the output signal of the output signal
switching device(s) shall change to an ON state at power ON and after the actuating force has been removed.
(see figure A.3).
NOTE If a device without reset is used, then the reset function should be provided in the machine control system
(see 5.4 of EN 954-1).
4.8 Access for maintenance (see 7.10 for test method)
Where access is required to the interior of any part of the pressure sensitive mat or pressure sensitive floor, it
shall be possible only by means of a key or tool. Any means of securing an enclosure shall be captive.
4.9 Adjustments (see 7.11 for test method)
There shall be no method of adjustment by the user to actuating force and response time. Where the supplier
states that sub assemblies of the pressure sensitive mat or pressure sensitive floor can be individually
replaced, this shall be possible without reducing the overall performance of the pressure sensitive mat or
pressure sensitive floor and without the need for adjustment.
4.10 Connections (see 7.12 for test method)
The correct alignment of plug/sockets shall be made clear by either type, shape, marking or designation (or a
combination of these).
Where components of different configurations existing within the pressure sensitive mat or pressure sensitive
floor are interchangeable, incorrect placement or exchange of these components shall not cause a failure to
danger.
If a sensor or subsystem is connected by a plug and socket, removal or disconnection of the sensor or
subsystem at the plug and socket from or within the control unit shall cause the output signal switching
device(s) to go to an OFF state.
4.11 Environmental conditions (see 7.13 for test method)
The pressure sensitive mat or pressure sensitive floor shall continue to operate in the environmental
conditions given below or in any wider range stated by the manufacturers.
4.11.1 Temperature range
The pressure sensitive mat or pressure sensitive floor shall comply with the requirements of 4.2.1 and 4.3
over a temperature range of + 5 ˚C to + 40 ˚C.
NOTE Extended environmental temperature ranges can be – 25 ˚C to + 40 ˚C and + 5 ˚C to + 70 ˚C.
4.11.2 Humidity
The requirements for humidity shall be in accordance with IEC 68-2-3 test Ca, for a period of four days.
4.11.3 Electromagnetic compatibility
The pressure sensitive mat or pressure sensitive floor shall continue in normal operation when subjected to
level/class 3 in accordance with table 4 (see 7.13.4).
4.11.4 Vibration
The requirements for vibration shall apply to the control unit and the output signal switching device(s) only and
shall be in accordance with IEC 68-2-6:
 Frequency range 10 Hz to 55 Hz;
 Displacement 0,15 mm;
 10 cycles per axis;
 Sweep rate one octave per minute.
NOTE Special requirements for the sensor are not practicable because of the variation in sizes and shapes of
sensors. Sensors are normally fixed to the ground in which case vibration is not normally critical. Where a sensor is fixed
to a part of a machine, the effects of vibration should be considered. See also annex B.
4.12 Power supply
4.12.1 Electrical power supply (see 7.14 for test method)
The pressure sensitive mat or pressure sensitive floor shall meet the requirements of 4.3 of EN 60204-1:1992.
4.12.2 Non electrical power supply
For non electrical power supplies, the manufacturer shall state the nominal supply level and the allowable
range of tolerance within which normal operation will be maintained.
Where over pressure protective devices are not provided, over pressure variations outside the nominal range
shall not result in a failure to danger.
Variations below the operating range shall not result in a failure to danger (see also EN 982 and EN 983).
NOTE No methods of test have been established for such equipment.
4.13 Electrical equipment (see 7.15 for test method)
4.13.1 General
The electrical equipment (components) of the pressure sensitive device shall:
 Conform to European Standards where they exist;
 Be suitable for the intended use;
 Be operated within their specified ratings.
4.13.2 Protection against electric shock
Protection against electrical shock shall be provided in accordance with 6.1, 6.2, and 6.3 of EN 60204-1:1992.
4.13.3 Protection against overcurrent
Overcurrent protection shall be provided in accordance with 7.2.1, 7.2.3, 7.2.7, 7.2.8 and 7.2.9 of
EN 60204-1:1992.
NOTE Information may need to be given to the user of the pressure sensitive device as to the maximum rating of
fuses, or setting of an overcurrent protective device for the circuit(s) connected to the output connection points of the
output signal switching device(s).
4.13.4 Pollution degree
The electrical equipment shall be suitable for pollution degree 2 in accordance with 6.1.2.3 of
EN 60439-1:1993.
4.13.5 Clearance, creepage distances and isolating distances
The electrical equipment shall be designed and constructed in accordance with 7.1.2 of EN 60439-1.
4.13.6 Wiring
The electrical equipment shall be wired in accordance with 7.8.3 of EN 60439-1.
4.14 Enclosure (see 7.16 for test method)
4.14.1 Sensor
The sensor enclosure shall meet a minimum standard of IP 54 (in accordance with EN 60529).
When the manufacturer specifies that the sensor can be immersed in water, the minimum enclosure level of
the sensor shall be IP 67 (in accordance with EN 60529).
4.14.2 Control unit and output signal switching device enclosure
The control unit enclosure shall meet a minimum standard of IP 54 (in accordance with EN 60529). Where the
control unit is designed for mounting in another control equipment enclosure and this enclosure is to a
minimum IP 54 (in accordance with EN 60529), the control unit shall be to a minimum of IP 2X (in accordance
with EN 60529). The enclosure containing the output signal switching device(s) shall also meet these
requirements.
4.15 Categories for safety-related parts of control systems according to EN 954 (see 7.17 for
test method)
4.15.1 Pressure sensitive mats and pressure sensitive floors shall meet the requirements of the category for
which they are specified and marked. These categories are defined in EN 954-1.
4.15.2 The sensor, control unit and output signal switching device shall meet the requirements of category 1
as a minimum. To meet category 1, the system shall as a minimum meet the requirements of this standard
and the relevant requirements of EN 954-1.
4.15.3 Electronic control units shall meet the requirements of category 2 as a minimum.
NOTE 1 The sensor, control unit, and output signal switching device may each have different categories.
NOTE 2 The fault conditions of the sensor and its connections which can be monitored should be taken into account
when evaluating the category of the control unit.
NOTE 3 It is not possible at the time of writing this European Standard for the majority of sensors to meet all the
requirements specified in the categories 2, 3 and 4 in particular when considering mechanical damage and long term
deterioration.
4.16 Sensor fittings (see 7.1.2 for test method)
The sensor shall be provided with a means for fixed permanent location.
4.17 Tripping (see 7.1.2 for test method)
Where there is a danger that a person can trip on the outside edge(s) of a sensor or sensor covering, a
suitable ramp shall be provided. The slope of the ramp shall not exceed 20 ˚C from the horizontal. Its
existence shall be identified by contrasting colours or marking. The ramp shall not create a physical
obstruction or other hazard. Where there is a combination of sensors and/or additional coverings, provision
shall be made to minimise the tripping hazard at joints and junctions between the sensors.
NOTE There is at present no standard covering this subject, but !EN ISO 14122-2" can be taken into account
when test method is agreed.
4.18 Slipperiness and softness of the sensor top surfaces (see 7.18 for test method)
Provision shall be made on the top surface of the sensor to minimise slipping under the expected operating
conditions.
NOTE There is at present no standard covering this subject, but !EN ISO 14122-2" can be taken into account
when test method is agreed.
4.19 Additional coverings of top surfaces of sensor(s) (see 7.19 for test method)
The overall requirements of this standard shall apply to sensor(s) which are fitted with additional or alternative
coverings e.g. protective sheets (see also annex C).
4.20 Failure due to blocking or wedging (see 7.20 for test method)
There shall be no risk of failure due to build-up of dirt or swarf under the sensor or combination of sensors or
their associated connecting parts.
5 Marking (see 7.1.2 for test method)
5.1 The pressure sensitive mat or pressure sensitive floor shall be marked in accordance with !6.4 of
)
EN ISO 12100-2:2003, 6.4 b) of EN ISO 12100-2:2003/prA1:2008 " and 18.1 of EN 60204-1:1992.
5.2 Marking of the control unit
The control unit label(s) shall also contain the following information, or indicate where this i
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