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User Manual
V620D0001 Rev 0.0
17-Nov-2021
4.
Technical Features
4.1.
Ball Bearing
The V-62x series stage features fully preloaded, high-precision rotary ball bearings to guide the motion of the
stage and support the payload. The bearing ways are made of hardened stainless-steel, which provide long life
and corrosion resistance.
4.2.
Torque Motor
The V-62x series stage features a brushless 3-phase torque motor. This type of motor technology is completely
non-contact and is ideally suited to high speeds; high accelerations; fine resolution positioning; and smooth,
constant-velocity scanning. The motor must be commutated by an external motor drive. Hall Effect sensors are
not included, so the drive and/or controller must be capable of encoder-based (sine) commutation.
4.3.
Encoder
The V-62x series stage features an optical non-contact position encoder for direct measurement of the stage
position. This feedback signal is used by an external motion controller to close the servo loop for position and
velocity control.
The V-62x series stage offers two types of encoders:
▪
Incremental with analog (sine/cosine) 1 V
interpolation.
▪
Absolute with BiSS-C 32-bit serial output: Eliminates the need for startup homing routines and limit switches.
4.4.
Index Mark (Incremental encoders only)
When equipped with either of the incremental encoder options, the V-62x series stage features a non-contact
home index marker. The index is integral to the encoder electronics. The index mark is optical; there is one
index per revolution of the stage.
PI (Physik Instrumente) L.P.
16 Albert Street, Auburn, MA 01501
Tel: 508-832-3456 Fax: 508-832-0506
Email: air@pi-usa.us
output: Suitable for use with controllers using on-board encoder
p-p
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