3 Product Description
U651 Rotation Stage
MP136E
Version: 1.3.0
11
3.7
Technical Features
3.7.1
Rotary Encoder
The U-651 is equipped with an optical rotary encoder. For the encoder resolution, refer to the
table in the "Specifications" section (p. 35).
Optical rotary encoders measure the actual position directly (direct metrology). Therefore,
errors occurring in the drivetrain, such as nonlinearity, backlash or elastic deformation, cannot
influence the measurement of the position.
3.7.2
Reference Switch
The U-651 has an optical reference switch (refer to "Reference Switch Specifications" (p. 36)).
Refer to the controller user manual and/or associated software manuals for the commands that
make use of the reference point signal.
The red dot on the platform is above the 0° mark in the base body after the U-651 has done a
reference move.
3.7.3
ID Chip
The U-651 positioners have a connector with an ID chip. Information on the positioner (e.g.,
type, serial number, date of manufacture, hardware version) is stored in parameters on the
ID chip.
When switched on or rebooted, controllers from PI read the data from the ID chip.
You will find further information on ID chip recognition in the manual for the controller.
