3 Product Description
P-5x7/P-5x8 Positioners
PZ82E
Version: 3.2.0
13
3.6
Technical Features
3.6.1
PICMA® Piezo Actuators
P-5x7/P-5x8 positioners are driven by PICMA® piezo actuators. PICMA® actuators have
all-ceramic insulation and their performance and lifetime are therefore far superior to
conventional actuators. The ceramic insulation layer protects the monolithic piezoceramic block
against humidity and failure due to increased leakage current. In this way, an especially high
reliability is achieved even under extreme ambient conditions. In contrast to motorized drives,
there are no rotating parts or friction. The piezo actuators are therefore free of backlash,
maintenance, and wear.
3.6.2
Flexure Guides
P-5x7/P-5x8 positioners have flexure guides for friction-free motion and high guiding accuracy.
A flexure guide is an element that is free of static and sliding friction. It is based on the elastic
deformation (bending) of a solid (e.g., steel) and does not have any rolling or sliding parts.
Flexure elements have a high stiffness and load capacity. Flexure guides are maintenance and
wear free. They are 100% vacuum compatible, function in a wide temperature range and do not
require any lubricants.
3.6.3
Capacitive Sensors
Capacitive sensors measure the position directly on the platform (direct metrology) and work
without contact. Neither friction nor hysteresis interferes with the motion, which allows
excellent linearity values to be achieved together with the high position resolution. In
conjunction with suitable electronics, capacitive sensors achieve the best resolution, stability,
and bandwidth.
3.6.4
ID Chip (Models with D-sub Connector Only)
An ID chip is in the D-sub connector of the P-5x7/P-5x8. When the P-5x7/P-5x8 is calibrated at
the factory with digital electronics, the calibration data is saved on the ID chip together with
specific product information. After switching on, the digital electronics read the data from the
ID chip of the P-5x7/P-5x8 connected. A P-5x7/P-5x8 with an ID chip containing calibration data
can therefore be connected to any suitable digital electronics without renewed calibration.
Refer to the manual for the controller for more information on the ID chip.
