Thorlabs.com - Rotation Stage with Resonant Piezoelectric Motors
R O T A T I O N S T A G E W I T H R E S O N A N T P I E Z O E L E C T R I C M O T O R S
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The components of the ELL8K Rotation Stage
bundle are shown connected and with key features
indicated.
Key Specifications
a
Travel (No Limit Switches)
b
360° Continuous
Homing/Positioning Accuracy
288.0 µrad (0.0165°)
Repeatability
434 µrad (0.025°)
Velocity (Maximum)
1.4 Hz (504 deg/s) ±0.6 Hz
Maximum Total Load
200 g (7.05 oz)
DC Voltage Input
4.5 to 5.5 V
Weight of Stage and Brackets
90 g (0.198 lbs)
Features
Ideal for OEMs and Applications Requiring Rapid and Precise Positioning
Micro-B USB and Picoflex
®
Connectors for Control Signals
Multi-Drop Serial Communication Protocol Supported
Ø50.0 mm (Ø1.97") Rotation Stage
Absolute Home Position Found with IR and Magnetic Sensor Technologies
Magnetic Incremental Rotary Encoder Used to Position Stage
Thorlabs' Elliptec™ piezoelectric resonant motor technology drives these Rotation Stages, which are
available standalone (Item # ELL8) and as part of a complete package that includes an interface board
(Item # ELL8K). With a mass of 80 g and maximum dimensions of 81.0 mm x 60.0 mm x 20.2 mm
(without brackets), the rotation stage is lightweight and compact. The assembled components of the
ELL8K are shown in the image to the right, with key features labeled. The
motor is highly dynamic and has no gearing. As the motor includes no
magnets, it is compatible with EM-sensitive environments. Please see
The
Elliptec™ Motor
tab for more information.
The ELL8 rotation stage achieves closed-loop operation through a design that
includes an enclosed optical infrared (IR) sensor and a relative (incremental)
magnetic rotary encoder, which provides rotation to specified orientations
with a repeatability of 434 µrad. The stage is moved with minimum increments
of 288.0 µrad, and it has a homing and positioning accuracy of 288.0 µrad.
When power is not applied to the motors, the stage is held in place by an
O V E R V I E W
Ø50 mm Rotation Stage with Closed-Loop Positioning
Open Frame Design for OEM Applications
Control via Interface Board, GUI, or ASCII Message Calls
Fully Integrated Drive Electronics
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Application Idea
Rotate the diffraction
grating to select the
wavelengths passing
through the slit
ELL8K
Interface Board
Rotation Stage
(Also Available Individually)
8-32 Tapped Holes
(M4 for the ELL8K/M)
37 Places
ELL8 - July 17, 2018
Item # ELL8 was discontinued on July 17, 2018. For informational purposes, this is a copy of the website
content at that time and is valid only for the stated product.
