4
Intro
duc
tion
E3X-DRT21-S
User’s Manual
Introduction
CHANGE IN SPECIFICATIONS
Product specifications and accessories may be changed at any time based on improvements
and other reasons.
It is our practice to change model numbers when published ratings or features are changed, or
when significant construction changes are made. However, some specifications of the product
may be changed without any notice. When in doubt, special model numbers may be assigned
to fix or establish key specifications for your application on your request. Please consult with
your OMRON representative at any time to confirm actual specifications of purchased
products.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even
when tolerances are shown.
ERRORS AND OMISSIONS
The information in this document has been carefully checked and is believed to be accurate;
however, no responsibility is assumed for clerical, typographical, or proofreading errors, or
omissions.
PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user’s programming of a programmable product, or
any consequence thereof.
COPYRIGHT AND COPY PERMISSION
This document shall not be copied for sales or promotions without permission.
This document is protected by copyright and is intended solely for use in conjunction with the
product. Please notify us before copying or reproducing this document in any manner, for any
other purpose. If copying or transmitting this document to another, please copy or transmit it in
its entirety.