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Regulations and Standards
NX-series Safety Control Unit User’s Manual (Z930)
Machinery Directive
The Machinery Directive requires ensuring the required safety for safety components used for
machinery safety.
Applicable standards: EN ISO 13849-1:2008 and EN 62061 SIL CL3
Conformance to EC Directives
The NX-series Units comply with EC Directives. To ensure that the machine or device in which the
NX-series Units are used complies with EC Directives, the following precautions must be observed.
• The NX-series Units must be installed within a metallic control cabinet.
• You must meet the following conditions for the DC power supplies that are connected as the Unit
power supplies and I/O power supplies for the NX-series Units.
(a) Use reinforced insulation or double insulation.
(b) Ensure an output hold time of 20 ms min.
(c) Use an SELV power supply that meets the requirements of IEC/EN 60950-1 and EN
50178.
Do not allow the power supply cable length to exceed 3 m.
We recommend that you use the OMRON S8JX-series Power Supplies. EMC standard compli-
ance was confirmed for the recommended Power Supplies.
• NX-series Units that comply with EC Directives also conform to the Common Emission Standard
(EN 61131-2). Radiated emission characteristics (10-m regulations) may vary depending on the
configuration of the control panel used, other devices connected to the control panel, wiring, and
other conditions.
You must therefore confirm that the overall machine or equipment in which the NX-series Units
are used complies with EC Directives.
• This is a Class A product (for industrial environments). In a residential environment, it may cause
radio interference. If radio interference occurs, the user may be required to take appropriate mea-
sures.
EN ISO 13849-1 and EN 62061 require process management to avoid system interference and to sim-
plify reading, understanding, testing, and maintaining software. This is required in all phases of the life
cycle of software programming and software design (e.g., basic software design, safety circuit system
design, and software upgrades) in safety control systems to be developed using safety controllers.
Therefore, process management is required for design and development of software for facilities and
equipment that use the function blocks provided in the Safety Controller.
The customer must implement measures to ensure compliance with these standards.
You can download the reliability data for safety of machinery that is required to verify the safety perfor-
mance of your equipment from the following URL:
http://www.ia.omron.com/support/sistemalibrary/index.html.
The NX-series Safety Control Units comply with the following UL and CSA standards. The application
conditions for standard compliance are defined. Refer to the Instruction Sheet that is provided with
each Unit before application.
Conformance to EN ISO 13849-1 and EN 62061
Conformance to UL and CSA Standards
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