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Safety Precautions
NX-series Safety Control Unit User’s Manual (Z930)
IEC 60204-1 Electrical Equipment of Machines - Part 1: General Requirements
ISO 13849-1, -2 Safety-related Parts of Control Systems
ISO 14119 Interlocking Devices Associated with Guards - Principles for Design and Selection
IEC 62061 Functional Safety of Safety-related Electrical, Electronic and Programmable Electronic
Control Systems
IEC 61508 Functional Safety of Electrical/Electronic/Programmable Electronic Safety-related Sys-
tems
Safety products must conform to pertinent laws, regulations, and standards. Make sure that they are
installed and used in accordance with the laws, regulations, and standards of the country where the
devices and equipment incorporating these products are distributed.
Carefully read the specifications and precautions as well as all items in the Instruction Manual for your
safety product to learn appropriate usage procedures. Any deviation from instructions will lead to unex-
pected device or equipment failure not anticipated by the safety-related system.
When transferring devices and equipment, be sure to retain one copy of the Instruction Manual and
supply another copy with the device or equipment so the person receiving it will have no problems with
operation and maintenance.
• Related International Standards:
ISO 12100 General Principles for Design - Risk Assessment and Risk Reduction
IEC 60204-1 Electrical Equipment of Machines - Part 1: General Requirements
ISO 13849-1, -2 Safety-related Parts of Control Systems
IEC 62061 Functional Safety of Safety-related Electrical, Electronic and Programmable Electronic
Control Systems
IEC 61508 Functional Safety of Electrical/Electronic/Programmable Electronic Safety-related Sys-
tems
Observing Laws and Regulations
Observing Usage Precautions
Transferring Devices and Equipment
Design
Confirm that the calculated reaction times meet the required specifications for all safety
chains.
Serious injury may possibly occur due to loss of required safety functions.
All safety devices and components that are connected to an NX-series Safety Control Unit
must be selected and used to meet the required level of safety and the relevant safety cat-
egory.
Serious injury may possibly occur due to loss of required safety functions.
Do not use indicators on the NX-series Safety Control Units for safety operations.
Serious injury may possibly occur due to loss of required safety functions.
Check during the import of the program that the CRC of the program is correct.
Serious injury may possibly occur due to loss of required safety functions.
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