ISO 23218-2:2022

INTERNATIONAL ISO
STANDARD 23218-2
First edition
2022-09
Industrial automation systems and
integration — Numerical control
systems for machine tools —
Part 2:
Requirements for numerical control
system integration
Reference number
© ISO 2022
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms.2
5 Technical requirements . 2
5.1 Basic requirements . 2
5.1.1 Marking . . . 2
5.1.2 Colour . 3
5.1.3 Wires and connections. 3
5.1.4 Protection . 3
5.1.5 Operation and maintainability . 3
5.1.6 Nameplate . . 3
5.2 AC input power supply requirements . 4
5.3 Protection and safety requirements . 4
5.3.1 Protection against electric shock . 4
5.3.2 Safety protection of electric cabinet . 4
5.3.3 Protective earth and protective bonding . 4
5.3.4 Insulation resistance . 4
5.3.5 Withstand voltage . 5
6 Test methods . 5
6.1 Electrical cabinet and enclosure protection degree test . 5
6.2 Protection and safety test . 5
6.2.1 Protection against electric shock test . 5
6.2.2 Safety verifycation of electric cabinet . 5
6.2.3 Protective earthing and protective bonding circuit continuity test . 5
6.2.4 Insulation resistance tests . 6
6.2.5 Withstand voltage tests . 6
Bibliography . 8
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
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www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 184, Automation systems and integration,
Subcommittee SC 1, Industrial cyber and physical device control.
A list of all parts in the ISO 23218 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
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iv
Introduction
Numerically controlled machine tools are effective production assets with an operations stock of more
than four million units and still increasing.
While mechanical construction sets the base for accuracy and durability, the numerical control system
(NC system) is the enabler to leverage the potential of the system.
The NC system comprises a powerful computing hardware, a sophisticated NC-Kernel, and an
elaborated connectivity, stretching from internal process parameters to high level manufacturing
execution system (MES) integration and beyond. It supports operation concepts from push buttons to
sophisticated touch-panel systems.
Machine tools and their NC systems are used in harsh environments facing operational conditions such
as vibrations, dirt, coolant spray and electromagnetical interferences. Purchasers and operators of
machine tools require confidence on the appropriate quality, durability and usability in order to ensure
intended use and productivity.
The ISO 23218 series addresses requirements for NC systems. This document provides requirements
for NC system integration, and ISO 23218-1 specifically provides requirements for the NC system itself.
Expected users of this document include:
— design engineers working for a company that uses an NC system for machine tools, for developing a
new and/or improving a current NC system for machine tools;
— design engineers working for a machine tools builder company, for developing and providing new
and/or improving current machine tools by procuring an NC system;
— facility planning engineers, for procuring new and/or improving current machine tools with an NC
system.
v
INTERNATIONAL STANDARD ISO 23218-2:2022(E)
Industrial automation systems and integration —
Numerical control systems for machine tools —
Part 2:
Requirements for numerical control system integration
1 Scope
This document specifies requirements for the integration of numerical control systems (NC systems). It
consists of technical and inspection requirements and test methods.
This document is applicable to all machine tools using NC systems not already covered by class C
standards (including metal cutting machine tools, metal forming machine tools and woodworking
machine tools) and for partial assemblies of machine tools (including cabinets and auxiliary devices)
intended to be integrated into machine tools. It is also applicable to other production equipment using
NC systems.
NOTE NC system integration with machine tools is performed mainly by machine tool builders using an NC
system to control their machine tools, system integrators by assembling machine tools with the NC system to a
production line, and machine tool users by upgrading their existing equipment.
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 2806, Industrial automation systems — Numerical control of machines — Vocabulary
ISO 23218-1, Industrial automation systems and integration — Physical device control — Numerical
control systems for machine tools — Part 1: Requirements for numerical control systems
IEC 60204-1:2016, Safety of machinery — Electrical equipment of machines — Part 1: General requirements
IEC/TS 60204-34:2016, Safety of machinery — Electrical equipment of machines — Part 34: Requirements
for machine tools
IEC 60529, Degrees of protection provided by enclosures (IP Code)
IEC 61310-1, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual,
acoustic and tactile signals
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 2806, ISO 23218-1 and the
following apply. ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/ ”
3.1
numerical control system
NC system
system that realizes the automatic control of a process by using numerical data introduced while the
operation is in progress
Note 1 to entry: Driving devices are not included in NC systems.
3.2
port
access to a device or network of a numerical control system (NC system) (3.1) where electromagnetic
energy or signals may be supplied or received or where the device or network variables may be
observed or measured
Note 1 to entry: The port generally refers to the boundary on the external interface of the NC system, and
interface generally refers to the boundary of each unit in an NC system.
[SOURCE: IEC 60050-131:2002, 131-12-60, modified — The term "NC system" was added to the
...