
1.GENERAL SPECIFICATIONS FOR THE αiS/αi SERIES B-65262EN/03
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1.1 FEATURE
The FANUC AC Servo Motor αis series and αi series has been
designed for machine tool feed axis applications. This servo motor αi
series has the following features:
Smooth rotation
The special magnetic pole shape minimizes torque ripples which,
when combined with precise current control and accurate Pulsecoder
feedback, enables extremely smooth motor rotation.
Excellent acceleration
The use of a special rotor shape results in motors that are smaller and
lighter than previous models, but which can develop a high level of
torque. These motors, therefore, provide excellent acceleration
characteristics.
High reliability
A totally-enclosed, friction-free brushless design is used. This allows
the servo motors to be used in demanding environments with no need
for special checks or maintenance.
Built-in, high-precision sensor
A low-indexing-error optical encoder (Pulsecoder) is built into the
motors. This Pulsecoder enables precise positioning.
Pulsecoders that output 1,000,000 or 16,000,000 pulses per rotation
are available. As such, the a series motors can be used for positioning
applications ranging from simple positioning to those requiring a high
degree of precision.
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αα
αis series