THORLABS ELL8 Series Manual

Thorlabs.com - Rotation Stage with Resonant Piezoelectric Motors
Item # ELL8 was discontinued on July 17, 2018. For informational purposes, this is a copy of the website
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
►
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
ELL8K
Interface Board
Hide Overview
O V E R V I E W
Features
Ideal for OEMs and Applications Requiring Rapid and Precise Positioning
Micro-B USB and Picoflex
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
ELL8 - July 17, 2018
content at that time and is valid only for the stated product.
8-32 Tapped Holes
(M4 for the ELL8K/M)
37 Places
Rotation Stage
(Also Available Individually)
®
Connectors for Control Signals
The components of the ELL8K Rotation Stage
bundle are shown connected and with key features
Key Specifications
b
Travel (No Limit Switches)
Homing/Positioning Accuracy
Repeatability
Velocity (Maximum)
Maximum Total Load
DC Voltage Input
Weight of Stage and Brackets
Application Idea
Rotate the diffraction
grating to select the
wavelengths passing
through the slit
Click to Enlarge
indicated.
a
360° Continuous
288.0 µrad (0.0165°)
434 µrad (0.025°)
1.4 Hz (504 deg/s) ±0.6 Hz
200 g (7.05 oz)
4.5 to 5.5 V
90 g (0.198 lbs)