Actuators suit scanning and switching applications.

Press Release Summary:

Based on ceramic encapsulated PICMA® multilayer actuator technology, Model P-871 closed-loop piezo bender actuator provides travel ranges up to 1,600 µm (2,000 µm in open loop) and prevents water diffusion into insulation layer. Featuring monolithic design, unit operates at ±30 V and has up to 150°C operating temperature range. Actuator can also be fitted with Models E-651.1S and E-651.2S bench-top units and E-614 OEM controller card for precise closed-loop motion control.

Original Press Release:

Cost-Effective Piezo Bender Actuators Offer Millimeters of Motion, Nanometer Precision

April 2007 - PI (Physik Instrumente) L.P. offers the P-871 closed-loop piezo bender actuators and E-614 OEM controllers. These unique long-travel piezo transducer systems are based on PI's ceramic encapsulated PICMA® multilayer actuator technology. Due to an integrated high-resolution position feedback sensor they provide up to 20 times better linearity, accuracy and repeatability than conventional open-loop piezo benders.

The P-871 bender actuators also achieve longer positioning ranges than most other closed-loop piezo actuators, up to 1600 µm (1.6 mm), and response times in the millisecond range. (In open-loop mode, 2 mm travel is possible).

Typical Applications

Scanning of optical components, photonics alignment, beam deflection and stabilization, nanopositioning, fast switching.

Closed-Loop Controllers: Bench Top and OEM Cards

For precise closed-loop motion control PI offers a line of compact driver electronics. Single and dual channel bench-top units (models E-651.1S and E-651.2S) are available as well as the cost-effective E-614 OEM controller card.

Ceramic Encapsulation for Increased Lifetime

PICMA® bender actuators are superior to conventional actuators in high-endurance situations and show substantially longer lifetimes both in static and dynamic operation, even in harsh environments. Due to the use of cofired outer ceramic insulation, diffusion of water molecules into the insulation layer -- the major cause of dielectric breakdown -- is greatly reduced.

Features & Advantages:

o Long travel ranges to 1600 µm (2000 µm in open loop)

o Closed-loop operation for significantly better accuracy and repeatability

o Monolithic design for fast response and high stiffness

o Significantly lower operating voltage, only ±30 V (3 to 10 times lower than conventional piezo benders)

o Ceramic encapsulation for extended lifetime (insensitive to water molecules)

o Ideal for scanning and switching applications

o Vacuum-compatible versions

o Increased dynamic performance and extra-wide temperature range to 300°F (150°C)

More information on the Web

About PI

PI is a leading manufacturer of nanopositioning and precision motion-control equipment for photonics, nanotechnology, semiconductor and life science applications. PI has been developing and manufacturing standard & custom precision products with piezoelectric and electromagnetic drives for 35+ years. The company has been ISO 9001 certified since 1994 and provides innovative, high-quality solutions for OEM and research. PI is present worldwide with eight subsidiaries and total staff of 450+.

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