EN ISO 16090-1:2018

SLOVENSKI STANDARD
01-oktober-2018
1DGRPHãþD
SIST EN 12417:2002+A2:2009/AC:2010
SIST EN 13128:2002+A2:2009
SIST EN 13128:2002+A2:2009/AC:2010
SIST EN 14070:2004+A1:2009
SIST EN 14070:2004+A1:2009/AC:2010
Varnost obdelovalnih strojev - Obdelovalni centri, frezalni stroji in stroji za prenos
- 1. del: Varnostne zahteve (ISO 16090-1:2017)
Machine tools safety - Machining centres, Milling machines, Transfer machines - Part 1:
Safety requirements (ISO 16090-1:2017)
Werkzeugmaschinen Sicherheit - Bearbeitungszentren, Fräsmaschinen,
Transfermaschinen - Teil 1: Sicherheitsanforderungen (ISO 16090-1:2017)
Sécurité des machines-outils - Centres d'usinage, fraiseuses, machines transfert - Partie
1: Exigences de sécurité (ISO 16090-1:2017)
Ta slovenski standard je istoveten z: EN ISO 16090-1:2018
ICS:
25.080.20 Frezalniki Boring and milling machines
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 16090-1
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2018
EUROPÄISCHE NORM
ICS 25.080.01 Supersedes EN 12417:2001+A2:2009,
EN 13128:2001+A2:2009, EN 14070:2003+A1:2009
English Version
Machine tools safety - Machining centres, Milling
machines, Transfer machines - Part 1: Safety requirements
(ISO 16090-1:2017)
Sécurité des machines-outils - Centres d'usinage, Werkzeugmaschinen Sicherheit - Bearbeitungszentren,
fraiseuses, machines transfert - Partie 1: Exigences de Fräsmaschinen, Transfermaschinen - Teil 1:
sécurité (ISO 16090-1:2017) Sicherheitsanforderungen (ISO 16090-1:2017)
This European Standard was approved by CEN on 24 January 2018.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
C OMITÉ EUROPÉEN DE NORMALISATIO N

EUROPÄISCHES KOMITEE FÜR NORMUN G

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16090-1:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 16090-1:2018) has been prepared by Technical Committee ISO/TC 39 "Machine
tools" in collaboration with Technical Committee CEN/TC 143 “Machine tools - Safety” the secretariat of
which is held by SNV.
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 2018, and conflicting national standards shall
be withdrawn at the latest by April 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 13128:2001+A2:2009, EN 12417:2001+A2:2009 and
EN 14070:2003+A1:2009.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 16090-1:2017 has been approved by CEN as EN ISO 16090-1:2018 without any
modification.
INTERNATIONAL ISO
STANDARD 16090-1
First edition
2017-12
Machine tools safety — Machining
centres, Milling machines, Transfer
machines —
Part 1:
Safety requirements
Sécurité des machines-outils — Centres d'usinage, fraiseuses,
machines transfert —
Partie 1: Exigences de sécurité
Reference number
ISO 16090-1:2017(E)
©
ISO 2017
ISO 16090-1:2017(E)
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
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Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved

ISO 16090-1:2017(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 4
3.1 General terms . 4
3.2 Groups of machines. 7
3.3 Parts of machines . 8
3.4 Mode of safe operations .10
3.5 Maximum permissible spindle speed and feed rate .11
4 List of significant hazards .12
4.1 General .12
4.2 Main hazard zones .12
4.3 Significant hazards and hazardous situations covered by this document .12
5 Safety requirements and/or protective/risk reduction measures .17
5.1 General requirements .17
5.1.1 General.17
5.1.2 Required characteristics for guards of all machine groups .17
5.1.3 Power-operated moveable guards for user access .18
5.2 Specific requirements resulting from mechanical hazards .20
5.2.1 Protective measures for Group 1 machines .20
5.2.2 Protective measures for Group 2 machines .20
5.2.3 Protective measures for Group 3 and Group 4 machines .21
5.2.4 MSO of machine operation .23
5.2.5 Optional or additional equipment for machines .30
5.3 Specific requirements resulting from electrical hazards .38
5.4 Specific requirements resulting from noise hazards .39
5.5 Specific requirements resulting from radiation hazards .39
5.6 Specific requirements resulting from material or substance hazards .39
5.6.1 Combustible coolants .39
5.6.2 Minimum quantity lubrication (MQL) .41
5.6.3 Dry processing and combustible dust .41
5.6.4 Requirements for biological or microbiological hazards .41
5.7 Specific requirements resulting from neglect of ergonomic principles hazards .42
5.8 Specific requirements resulting from unexpected start-up, over-run or over-
speed hazards .43
5.8.1 General.43
5.8.2 Starting .43
5.8.3 Normal stop .44
5.8.4 Emergency stop .44
5.8.5 Safety related parts of control system (SRP/CS) .44
5.8.6 Monitoring rotational speed limits and limits of linear and rotary movements .45
5.8.7 Requirements for electromagnetic compatibility of electrical equipment .45
5.9 Specific requirements resulting from failure of any power supply .45
5.10 Release of trapped and/or clamped persons .46
5.11 Specific requirements resulting from errors of fitting hazards .46
5.12 Specific requirements resulting from ejected fluids or parts .46
5.12.1 General requirements .46
5.12.2 Ejection of parts — Guard strength .47
5.12.3 Power-operated workpiece and tool clamping .47
5.12.4 Additional requirements for Group 3 and Group 4 machines .48
5.13 Specific requirements resulting from loss of stability hazards .48
ISO 16090-1:2017(E)
5.14 Requirements resulting from slips, trips, and fall of persons hazards .48
5.15 Requirements resulting from accessibility for maintenance or troubleshooting on
high parts of the machine .48
5.16 Requirements for machinery with operator cabins and perimeter fencing .49
5.16.1 General.49
5.16.2 Overall concept for entering/leaving machinery .49
5.16.3 Requirements for moveable/adjustable operator cabins and
operation platforms .49
5.16.4 Requirements for perimeter fencing .52
5.17 Verification of the safety requirements and/or protective measures .52
6 Information for use .56
6.1 General .56
6.2 Marking .56
6.3 Instruction for use .57
6.3.1 General.57
6.3.2 Tooling .59
6.3.3 Workpiece clamping .60
6.3.4 Machine functions accessible from the NC panel .60
6.3.5 Restart .60
6.3.6 Noise .60
6.3.7 Residual risks to be addressed to the machinery user .61
6.3.8 Installations instructions of machinery .62
6.3.9 Cleaning instructions of machinery .62
6.3.10 Machinery with operator cabins and/or perimeter fencing .62
Annex A (normative) Impact test method for guards on machines .63
Annex B (informative) Equipment for impact test and examples of tested materials .66
Annex C (informative) Illustrative figures as examples of machines .68
Annex D (informative) Illustrative figures as examples of guards .77
Annex E (informative) Examples of the integration of exhaust and extinguishing systems
when using combustible coolants or combustible dust .84
Annex F (informative) Provisions when using combustible coolants and combustible dust .86
Annex G (normative) Gravity-loaded axes .90
Annex H (informative) Examples: Concept for leaving/returning to a cabin (control station)
at Group 3 and Group 4 machines .97
Annex I (informative) Typical demand rates of safety functions for calculations according
to Table 5 and Annex J .99
Annex J (normative) Safety functions .104
Annex K (normative) Noise emission measurement .151
Bibliography .153
iv © ISO 2017 – All rights reserved

ISO 16090-1:2017(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,
as well as information about ISO's adherence to the World Trade Organization (WTO) principles in the
Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 39, Machine tools, Subcommittee
SC 10, Safety.
ISO 16090-1:2017(E)
Introduction
This document is a type-C standard as stated in ISO 12100.
This document is of relevance, in particular, for the following stakeholder groups representing the
market players with regard to machinery safety:
— machine manufacturers (small, medium and large enterprises);
— health and safety bodies (regulators, accident prevention organisations, market surveillance, etc.).
Others can be affected by the level of machinery safety achieved with the means of the document by the
above-mentioned stakeholder groups:
— machine users/employers (small, medium and large enterprises);
— machine users/employees (e.g. trade unions, organizations for people with special needs);
— service providers, e.g. for maintenance (small, medium and large enterprises);
— consumers (in case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate at the drafting
process of this document.
The machinery concerned and the extent to which hazards, hazardous situations or hazardous events
are covered are indicated in the Scope of this document.
When requirements of this type-C standard are different from those stated in type-A or type-B
standards, the requirements of this type-C standard take precedence over the requirements of the
other standards for machines that have been designed and built according to the requirements of this
type-C standard.
Milling machines present a wide range of hazards. Protection of operators and other persons from
contact with moving cutting tools, especially when being rapidly rotated in the spindle or being swung
from a tool magazine to the spindle during power-operated tool changing, or from contact with fast–
moving workpieces, is of great importance.
When power-operated mechanisms are provided for workpiece transfer, they can also create hazardous
situations during loading/unloading and workpiece alignment, clamping or releasing of the workpiece.
The significant hazards covered by this document are those listed in Clause 4. The safety requirements
and/or protective measures to prevent or minimize those hazards identified in Table 2 and procedures
for verification of these requirements or measures are found in 5.17.
The figures in Annex D are examples only and are not intended to illustrate the only interpretation of
the text.
vi © ISO 2017 – All rights reserved

INTERNATIONAL STANDARD ISO 16090-1:2017(E)
Machine tools safety — Machining centres, Milling
machines, Transfer machines —
Part 1:
Safety requirements
1 Scope
This document specifies the technical safety requirements and protective measures for the design,
construction and supply (including installation and dismantling, with arrangements for transport and
maintenance) of stationary milling machines (see 3.1.1), including machines capable of performing boring
operations (see 3.1.2), machining centres and transfer machines which are intended to cut cold metal,
and other non-combustible cold materials except for wood or materials with physical characteristics
similar to those of wood as defined in ISO 19085-1, and for glass, stone and engineered/agglomerated
materials as defined in EN 14618.
This document covers the following machines:
a) manually, without numerical control, operated boring and milling machines (see 3.2.1, Group 1),
e.g. knee and column type milling machines (see Figures C.1 and C.2);
b) manually, with limited numerical control, operated boring and milling machines (see 3.2.2,
Group 2), e.g. profile and contouring milling machines (see Figures C.3 and C.4);
c) numerically controlled milling machines and machining centres (see 3.2.3, Group 3), e.g. automatic
milling machines and milling centres, e.g. multi-spindle milling machines, gear-milling machines
(see Figures C.5, C.6 and C.7);
d) transfer and special-purpose machines (see 3.2.4, Group 4), which are designed to process only pre-
specified workpieces or limited range of similar workpieces by means of a predetermined sequence
of machining operations and process parameters (see Figures C.8, C.9, C.10, C.11, C.12 and C.13).
This document also applies to machines fitted with the following devices/facilities:
— tool magazine(s);
— tool changer(s);
— workpiece handling mechanism(s);
— powered workpiece clamping mechanism(s);
— swarf/chip conveyor(s);
— power-operated door(s);
— additional equipment for turning;
— additional equipment for grinding.
When in this document the sole word “machine” or “machines” is being used, it is referred to all above-
mentioned groups and types of machines.
This document deals with all significant hazards, hazardous situations and events relevant to this type
of machinery which may occur during transportation, assembly and installation, setting, operation,
cleaning and maintenance, troubleshooting, dismantling or disabling according to ISO 12100, when the
ISO 16090-1:2017(E)
machinery is used as intended and under conditions of misuse which are reasonably foreseeable by the
manufacturer (see Clause 4).
This document presumes accessibility to the machine from all directions and specifies access conditions
to operator positions. It also applies to workpiece transfer devices including transport devices for
loading/unloading when they form an integral part of the machine.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 230-5:2000, Test code for machine tools — Part 5: Determination of the noise emission
ISO 3744, Acoustics — Determination of sound power levels and sound energy levels of noise sources using
sound pressure — Engineering methods for an essentially free field over a reflecting plane
ISO 3746:2010, Acoustics — Determination of sound power levels and sound energy levels of noise sources
using sound pressure — Survey method using an enveloping measurement surface over a reflecting plane
ISO 4413:2010, Hydraulic fluid power — General rules and safety requirements for systems and their
components
ISO 4414:2010, Pneumatic fluid power — General rules and safety requirements for systems and their
components
ISO 4871, Acoustics — Declaration and verification of noise emission values of machinery and equipment
ISO 6385, Ergonomics principles in the design of work systems
ISO 9355-1, Ergonomic requirements for the design of displays and control actuators — Part 1: Human
interactions with displays and control actuators
ISO 9355-2, Ergonomic requirements for the design of displays and control actuators — Part 2: Displays
ISO 9355-3:2006, Ergonomic requirements for the design of displays and control actuators — Part 3:
Control actuators
ISO 11161:2007, Safety of machinery — Integrated manufacturing systems — Basic requirements. Amended
by ISO 11161:2007/Amd1:2010.
ISO 11202:2010, Acoustics — Noise emitted by machinery and equipment — Determination of emission
sound pressure levels at a work station and at other specified positions applying approximate environmental
corrections
ISO 11204:2010, Acoustics — Noise emitted by machinery and equipment — Determination of emission
sound pressure levels at a work station and at other specified positions applying accurate environmental
corrections
ISO 11228-1, Ergonomics — Manual handling — Part 1: Lifting and carrying
ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
ISO 13849-1:2015, Safety of machinery — Safety-related parts of control systems — Part 1: General
principles for design
ISO 13849-2, Safety of machinery — Safety-related parts of control systems — Part 2: Validation
ISO 13850:2015, Safety of machinery — Emergency stop function — Principles for design
2 © ISO 2017 – All rights reserved

ISO 16090-1:2017(E)
ISO 13851:2002, Safety of machinery — Two-hand control devices — Functional aspects and design
principles
ISO 13854, Safety of machinery - Minimum gaps to avoid crushing of parts of the human body
ISO 13855:2010, Safety of machinery — Positioning of safeguards with respect to the approach speeds of
parts of the human body
ISO 13856-1, Safety of machinery — Pressure-sensitive protective devices — Part 1: General principles for
design and testing of pressure-sensitive mats and pressure-sensitive floors
ISO 13856-2, Safety of machinery — Pressure-sensitive protective devices — Part 2: General principles for
design and testing of pressure-sensitive edges and pressure-sensitive bars
ISO 13857:2008, Safety of machinery — Safety distances to prevent hazard zones being reached by upper
and lower limbs
ISO 14118:2000, Safety of machinery — Prevention of unexpected start-up
ISO 14119:2013, Safety of machinery — Interlocking devices associated with guards — Principles for
design and selection
ISO 14120:2015, Safety of machinery — Guards — General requirements for the design and construction of
fixed and movable guards
ISO 14122-1, Safety of machinery — Permanent means of access to machinery — Part 1: Choice of fixed
means and general requirements of access
ISO 14122-2, Safety of machinery — Permanent means of access to machinery — Part 2: Working platforms
and walkways
ISO 14122-3, Safety of machinery — Permanent means of access to machinery — Part 3: Stairs, stepladders
and guard-rails
ISO 14122-4, Safety of machinery — Permanent means of access to machinery — Part 4: Fixed ladders
ISO 14738, Safety of machinery — Anthropometric requirements for the design of workstations at
machinery
ISO 15534-1, Ergonomic design for the safety of machinery — Part 1: Principles for determining the
dimensions required for openings for whole-body access into machinery
ISO 15534-2, Ergonomic design for the safety of machinery — Part 2: Principles for determining the
dimensions required for access openings
ISO 15641, Milling cutters for high speed machining — Safety requirements
ISO 16156:2004, Machine-tools safety — Safety requirements for the design and construction of work
holding chucks
ISO 19085-1, Woodworking machines - Safety - Part 1: Common requirements
ISO 19353, Safety of machinery — Fire prevention and fire protection
ISO 23125:2015, Machine tools — Safety — Turning machines
IEC 60204-1:2009, Safety of machinery — Electrical equipment of machines — Part 1: General requirements
IEC 60529, Degrees of protection provided by enclosures (IP code); Corrigendum 2
IEC 60825-1, Safety of laser products — Part 1: Equipment classification and requirements
IEC 61000-6-2, Electromagnetic compatibility (EMC) — Part 6-2: Generic standards — Immunity for
industrial environments
ISO 16090-1:2017(E)
IEC 61000-6-3, Electromagnetic compatibility (EMC) — Part 6-2: Generic standards — Emission standard
for residential, commercial and light-industrial environments
IEC 61000-6-4, Electromagnetic compatibility (EMC) — Part 6-4: Generic standards — Emission standard
for industrial environments
IEC 61800-5-2:2016, Adjustable speed electrical power drive systems — Part 5-2: Safety requirements —
Functional
IEC 62061:2005+AMD1:2012+AMD2:2015, Safety of machinery — Functional safety of safety-related
electrical, electronic and programmable electronic control systems
IEC/TS 62046, Safety of machinery — Application of protective equipment to detect the presence of persons
EN 1005-1+A1, Safety of machinery — Human physical performance — Part 1: Terms and definitions
EN 1005-2+A1, Safety of machinery — Human physical performance — Part 2: Manual handling of
machinery and component parts of machinery
EN 1005-4+A1, Safety of machinery — Human physical performance — Part 4: Evaluation of working
postures and movements in relation to machinery
EN 1127-1:2011, Explosive atmospheres — Explosion prevention and protection — Part 1: Basic concepts
and methodology
IEC 61000-4-2, Electrostatic discharge immunity test
IEC 61000-4-4, Electrical fast transient / burst immunity test
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 12100 and ISO 13849-1 and
the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1 General terms
3.1.1
milling machine
machine tool using geometrically defined rotary cutters to remove material in order to produce plane
or formed surfaces on a workpiece while advancing (i.e. feeding) the tool or the workpiece in a certain
direction (axis movement) or certain directions (axes movements)
3.1.2
boring machine
machine tool for boring holes in which the principal motion is a rotating cutter against a non-rotating
workpiece along a feed axis and the diameter of the hole is adjusted by a different axis which is usually
perpendicular to the feed axis
Note 1 to entry: This definition does not include machines exclusively for drilling.
3.1.3
stationary machine
machine which is assembled, installed and intended to be used permanently at a predefined location
4 © ISO 2017 – All rights reserved

ISO 16090-1:2017(E)
3.1.4
boring operation
machining process of enlarging a hole that has already been produced (e.g. drilled or cast), by means of
a single-point cutting tool or a boring head which contains several such tools
3.1.5
numerical control
NC
automatic control of a process performed by a device that makes use of numeric data introduced while
operation is in progress
[SOURCE: ISO 2806:1994, 2.1.1]
3.1.6
computerized numerical control
CNC
realization of NC (3.1.5) using a computer to control the machine functions in which the part program is
generated by inputting data manually at the machine
[SOURCE: ISO 2806:1994, 2.1.2, modified — Manual data input]
3.1.7
manual data input
MDI
mode of operation of a CNC system in which the part program is generated by inputting data manually
at the machine
3.1.8
electro-sensitive protective-equipment
ESPE
assembly of devices and/or components working together for protective tripping or presence-
sensing purposes comprising a sensing device, controlling monitoring devices, output devices and all
interconnecting wiring
[SOURCE: IEC 61496-1:2012, 3.5]
3.1.9
active opto-electronic protective device
AOPD
device whose sensing function is performed by opto-electronic emitting and receiving elements
detecting the interruption of optical radiation, generated within the device, by an opaque object present
in the specified detection zone
Note 1 to entry: IEC 61496–2 gives detailed provisions on AOPD. For applications, see IEC/TS 62046.
3.1.10
pressure sensitive protective device
PSPD
sensor(s) that responds to the application of pressure, a control unit and one or more output signal
switching device(s) and equipment for detecting persons or parts of persons which generates an
appropriate signal to the control system to reduce risk to the persons detected
Note 1 to entry: ISO 13856-1, ISO 13856-2 and ISO 13856-3 give detailed provisions.
Note 2 to entry: Safety-related control system associated with the PSPD or the PSPD itself can further include a
secondary switching device, start interlock, re-start interlock, etc.
ISO 16090-1:2017(E)
3.1.11
operational stop
stop of the machine movements in the production process
Note 1 to entry: Control functions between control system and machine drives are maintained (torque, speed of
rotation, position).
3.1.12
safe operating stop
SOS
operational stop with additional control system measures for monitoring standstill, preventing
hazardous machine movements due to control system faults
Note 1 to entry: The SOS function prevents the motor from deviating from the stop position by more than a
specified value. The power drive system supplies the motor with energy so that it can withstand external forces;
see also IEC 61800-5-2.
3.1.13
safe stop 1
SS1
function which either
a) initiates and controls the motor deceleration rate within set limits to stop the motor and initiates
the STO function when the motor speed is below a specified limit, or
b) initiates and monitors the motor deceleration rate within set limits to stop the motor and initiates
the STO function when the motor speed is below a specified limit, or
c) initiates the motor deceleration and initiates the STO function after an application specific time delay
Note 1 to entry: This safety function corresponds to a controlled stop in accordance with stop category 1 of
IEC 60204-1.
3.1.14
safe stop 2
SS2
function which either
a) initiates and controls the motor deceleration rate within set limits to stop the motor and initiates
the safe operating stop function when the motor speed is below a specified limit, or
b) initiates and monitors the motor deceleration rate within set limits to stop the motor and initiates
the safe operating stop function when the motor speed is below a specified limit, or
c) initiates the motor deceleration and initiates the safe operating stop function after an application
specific time delay
Note 1 to entry: This safety function corresponds to a controlled stop in accordance with stop category 2 of
IEC 60204–1.
3.1.15
safe torque off
STO
function which ensures that no energy is applied to the motor that can cause rotation or motion (in the
case of a linear motor)
Note 1 to entry: The Power Drive System (PSD) will not provide energy to the motor which can generate torque
or force (in the case of a linear motor).
Note 2 to entry: This safety function corresponds to an uncontrolled stop in accordance to stop category 0 of
IEC 60204–1.
6 © ISO 2017 – All rights reserved

ISO 16090-1:2017(E)
Note 3 to entry: This safety function may be used where power removal is required to prevent an unexpected
start-up.
Note 4 to entry: In circumstances where external influences (e.g. falling of suspended loads) are present,
additional measures (e.g. mechanical brakes) may be necessary to prevent any hazardous situation.
Note 5 to entry: Electronic means and electric contactors are not adequate for protection against electric shock
and additional measures for isolation may be necessary.
3.1.16
direction control
positive actuation device to select and maintain a movement
Note 1 to entry: A direction control can be a soft key, touch key, push button control or a rotary type button, e.g.
for opening or closing a door or for a movement for clockwise or counter clockwise.
3.1.17
non-combustible materials
materials, excluding wood, with PCS ≤ 3,0 MJ/kg (ISO 1716) or ΔT ≤ 50 °C and Δm ≤ 50 % and t ≤ 20 s
f
(ISO 1182), which withstand surface flame attacks and edge flame attacks with 30 s exposure time
without flame spread in excess of 150 mm vertically from the point of application of the test flame
within 60 s from the time of application (ISO 11925-2)
3.1.18
short presence
dwelling time of a person staying in the hazard zone less than an accumulated time of one hour, but
never more than 10 min per single exposition, during an 8 h shift
Note 1 to entry: See also IEC 62061:2005, Table A.2.
3.2 Groups of machines
With regard to the applications and the relevant hazards, machines are subdivided into four different
groups. See the overview in Table 1.
Table 1 — Overview of groups of machines
Subclause in which group
Group No. Group name
is defined
Manually controlled boring and milling machines without nu-
Group 1 3.2.1
merical control
Manually controlled boring and milling machines with limited
Group 2 3.2.2
numerical controlled capability
Numerical controlled milling machines, milling and machin-
Group 3 3.2.3
ing centres
Group 4 Transfer and special purpose machines 3.2.4
3.2.1
Group 1: Manually controlled boring and milling machine without numerical control
machine where axis motion is controlled by actuation of a mechanical handwheel or where powered
single-axis motion is controlled by mechanical, electrical or other means but without the capability for
programmed multiple axes movement
Note 1 to entry: For illustration, see Figures C.1 and C.2.
ISO 16090-1:2017(E)
3.2.2
Group 2: Manually controlled boring and milling machine with limited numerical controlled
capability
machine that can be operated like a Group 1 machine by the use of mechanical or electronic handwheels
or as a machine with limited NC control by operating controls on the NC panel
Note 1 to entry: For illustration, see Figures C.3 and C.4.
Note 2 to entry: This group of machines may be equipped with some or all of the features of Group 1 machines
(manual machines without NC) and the following:
—  a limite
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