Large torque by strong neodymium magnetsLow torque ripple by optimum magnetic circuit designStandard models applicable to both 200V and 400V inputHigh speed models is also applicable for turningHigh speed and high precision and maintenance free by the direct drive Suited to rotary tables and additional axes of 5-axes machine tools etc.

＊）“S” of DiS means “Strong motor with neodymium magnets”.

Features

Synchronous Built-in Servo Motor featuring Large Torque and Smooth Feed

2

Synchronous Built-in Servo Motor featuring Large Torque and Smooth Feed

System configuration

FANUC’s products

Power Cable

SERVO AMPLIFIER αi seriesi series CNC

αiCZ sensor *3

SYNCHRONOUS BUILT-INSERVO MOTOR DiS series

Synchronous Built-in Servo Motor Position Detection Circuit *1

FSSB

In case of absolute encoder

In case of incremental encoder

＊1 Not necessary for absolute encoder＊2 Necessary to conform to FANUC Serial Interface＊3 Absolute encoder

In case of αiCZ sensor

Third party’s Rotary Encoder

*2

High reliability by simple and strong structureHigh accuracy sensor gear manufactured by gear grinder with FANUC original learning controlCompact structure contributing to compact rotary axis

(Note)Described values are detecting accuracy of αiCZ Sensor itself.Detecting accuracy might change by the assembling condition to the machine.The values are not to guarantee the positioning accuracy of the machine.

αiCZ Sensor 512A

αiCZ Sensor 768A

αiCZ Sensor 1024A

Model name Number of teeth Max. speed[min-1]

512

768

1024

3000

2000

1500

Accuracy (Note)[sec.]

Typ.

±4

±3

±2

Max.

±8

±6

±4

1/3,600,000

Resolution[rev.]

3

Control Technologies

FANUC Servo control technology (SERVO HRV Control), whichhas plenty of achievements on feed axis of machine tool, with functions for high precision or avoiding mechanical resonance and so on, is applied for Synchronous built-in servo motor system also.In case of driving one axis by plural motors, sometimes stability is not secured because of interference between motors. Stabilizing functions to prevent interference between axes, are prepared in order to secure stability.

SERVO HRV Control

Achieving high precision by combination of Synchronous built-in servo motor. Best suited to cam grinding or gear cutting machine.・Sufficient Learning time of maximum 262 seconds and maximum 24 　Learning profiles are available. (Suited to cam grinding machine)・The combination of Learning Control and EGB control minimized 　synchronous error. (Suited to gear cutting machine)

Learning Control

Pos. control

Master axis

Master axis Toolaxis

Work axis

Slave axis

Slave axis

EGB control

Motion Command

Motion Command

Helical Command

Vel. control

HRV Cur. control

Algorism to avoid interference

Pos. control

HRVControl

SynchronousRation

Learning Control

Vel. control

HRV Cur. control

Table

＋

－

HRVControl

＋

－

＋ ＋

Algorism to reduceSynchronous Error

• All specifications are subject to change without notice.• No part of this catalog may be reproduced in any form.• The products in this catalog are controlled based on Japan's “Foreign Exchange and Foreign Trade Law". The export from Japan may be subject to an export license by the

government of Japan. Further, re-export to another country may be subject to the license of the government of the country from where the product is re-exported. Furthermore, the product may also be controlled by re-export regulations of the United States government. Should you wish to export or re-export these products, please contact FANUC for advice.

Oshino-mura, Yamanashi 401-0597, Japan Phone:81-555-84-5555 Fax:81-555-84-5512 http://www.fanuc.co.jp

© < LTD, 2002Sync-built-in-11, 2010. 3, Printed in Japan

< LTD