Omron NYB17-*100 SERIES, User Manual

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Warnings
WARNING
Disassembly and Dropping
Do not attempt to disassemble, repair, or modify the product in any way. Do-
ing so may result in malfunction or fire.
Installation
Always connect to a ground of 100 Ω or less when installing the product.
Ensure that installation and post-installation checks of the product are per-
formed by personnel in charge who possess a thorough understanding of
the machinery to be installed.
Fail-safe Measures
Provide safety measures in external circuits to ensure safety in the system if
an abnormality occurs due to malfunction of the product or due to other ex-
ternal factors affecting operation. Not doing so may result in serious acci-
dents due to incorrect operation.
Emergency stop circuits, interlock circuit, limit circuits, and similar safety
measures must be provided in external control circuits.
Unintended behavior may occur when an error occurs in internal memory of
the product. As a countermeasure for such problems, external safety meas-
ures must be provided to ensure safe operation of the system.
The use of an uninterruptible power supply (UPS) allows normal operation
to continue even if a momentary power failure occurs, possibly resulting in
the reception of an erroneous signal from an external device affected by the
momentary power failure. Take external fail-safe measures. Where neces-
sary, monitor the power supply voltage on the system for external devices
and use it as an interlock condition.
Safety Precautions
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NY-series Industrial Box PC Without Operating System User's Manual (W586)