Thank you for choosing this OMNUC W-series product. Proper use and handling of the
product will ensure proper product performance, will length product life, and may prevent
possible accidents.
Please read this manual thoroughly and handle and operate the product with care.
NOTICE
1. This manual describes the functions of the product and relations with other products. You should as-
sume that anything not described in this manual is not possible.
2. Although care has been given in documenting the product, please contact your OMRON representa-
tive if you have any suggestions on improving this manual.
3. The product contains dangerous high voltages inside. Turn OFF the power and wait for at least five
minutes to allow power to discharge before handling or working with the product. Never attempt to
disassemble the product.
4. We recommend that you add the following precautions to any instruction manuals you prepare for the
system into which the product is being installed.
S Precautions on the dangers of high-voltage equipment.
S Precautions on touching the terminals of the product even after power has been turned
OFF. (These terminals are live even with the power turned OFF.)
5. Specifications and functions may be changed without notice in order to improve product performance.
6. Positive and negative rotation of AC Servomotors described in this manual are defined as looking at
the end of the output shaft of the motor as follows: counterclockwise rotation is positive and clockwise
rotation is negative.
7. Do not perform withstand-voltage or other megameter tests on the product. Doing so may damage
internal components.
8. Servomotors and Servo Drivers have a finite service life. Be sure to keep replacement products on
hand and to consider the operating environment and other conditions affecting the service life.
9. The OMNUC W Series can control both incremental and absolute encoders. Differences in functions
or specifications according to the encoder type are indicated in this manual. Be sure to check the mod-
el that is being used, and follow the relevant specifications.
S Servomotors with incremental encoders: R88M-WjH-j/-WjL-j
S Servomotors with absolute encoders: R88M-WjT-j/-WjS-j
Items to Check After Unpacking
Check the following items after removing the product from the package:
S Has the correct product been delivered (i.e., the correct model number and specifica-
tions)?
S Has the product been damaged in shipping?
S Are any screws or bolts loose?
1. To ensure safe and proper use of your OMRON Servomotors and Servo Drivers, please read this manual
(Cat. No. I531-E1) to gain sufficient knowledge of the products, safety information, and precautions be-
fore actual use.
2. The products are illustrated without covers and shieldings to enable showing better detail in this manual.
For actual use of the products, make sure to use the covers and shieldings as specified.
3. Copies of this manual and other related manuals must be delivered to the actual end users of the prod-
ucts.
4. Please keep a copy of this manual close at hand for future reference.
5. If a product has been left unused for a long time, please consult with your OMRON sales representative.
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