PREFACE
The rapid progress being made in today’s automation and information
technologies is resulting in a growing need for even more-advanced motion
control for future high-tech equipment. The end result is a need for devices
that can provide more-precise and quicker motion at higher speeds. Servo
control technology makes this possible. Launched by Yaskawa in 1993, the
Σ Series consists of innovative AC Servos that were developed using
leading-edge servo control technology.
This manual covers all products in the Σ Series, which feature superior
functions and performance. This manual was designed to provide
comprehensible information for users who are about to use a servo for the
first time as well as for users who already have experience in using servos.
This manual enables users to understand what Σ-Series AC Servos are all
about and how to design, install, operate, and maintain a servo system.
Keep this manual in a convenient location and refer to it whenever
necessary in operating and maintaining the servo system.
YASKAWA ELECTRIC CORPORATION
General Precautions
S Some drawings in this manual are shown with the protective cover or shields removed, in order to
describe the detail with more clarity. Make sure all covers and shields are replaced before operat-
ing this product.
S Some drawings in this manual are shown as typical example and may differ from the shipped
product.
S This manual may be modified when necessary because of improvement of the product, modifica-
tion or changes in specifications.
Such modification is made as a revision by renewing the manual No.
S To order a copy of this manual, if your copy has been damaged or lost, contact your YASKAWA
representative listed on the last page stating the manual No. on the front cover.
S YASKAWA is not responsible for accidents or damages due to any modification of the product
made by the user since that will void our guarantee.
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