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Amplifiers, Drivers &Controllers PI offers a wide range of stand-ard amplifiers and controllersfor piezo actuators. The E-651.1S and E-651.2S desktop controllers and the E-614.2BS OEM board are specifically designed to operate P-871 ben- der actuators. Of course, PI also designs cus-tom actuators, amplifiers and controllers. Closed-Loop Position Controlfor Higher Accuracy P-871s are ideal devices forscanning, positioning and beam deflection applications and provide much better accu- racy, stability and repeatability than conventional open-loop actuators. The special benderdesign allows the direct appli-cation of a strain gauge sensor to the surface without the need for a polymer insulation layer in between. The advantages are faster response, reduced phase lag and precise positioncontrol with non-linearity of <0.5%. The settling time for a small-signal step (up to 1% nominal travel) to an accuracy of better than 1% is between 10 ms (P-871.112) and 30 ms(P-871.140).

PiezoMove Flexure Actuators - 13949 P-871

Closed-Loop, High-Deflection PICMA

®

Multilayer Piezo Bender Actuators (LVPZT)

Ordering Information P-871.112 Closed-loop Piezo Bender Actuator,160 µm, 9.6 mm Width, SGS P-871.122 Closed-loop Piezo Bender Actuator,400 µm, 9.6 mm Width, SGS P-871.127 Closed-loop Piezo Bender Actuator,720 µm, 9.6 mm Width, SGS P-871.128 Closed-loop Piezo Bender Actuator,720 µm, 6.3 mm Width, SGS P-871.140 P-871.140, P-871.128, P-871.122 and P-871.112 closed-loop bender actuators (from left to right). Closed-loop Piezo Bender Actuator, 1600 µm, 11.0 mm Width, SGS Closed-Loop Operation for Superior Accuracy Nanometer-Range Resolution Deflection up to 1.6 mm Ceramic Insulation for Extended Lifetime Ideal for Scanning Applications Vacuum-Compatible Versions Long Lifetime and HighPerformance—Ideal forDynamic Operation Low Operating Voltage Mounting Hardware Included Special Controllers / Drivers Available PICMA P-871 transducers are uniqueclosed-loop piezo benders based on the open-loop PL122 to PL140 PICMA
® -series multi-layer actuators. Equipped with high-resolution position feed- back sensors they provide bet- ter linearity, accuracy and repeatability than other piezo benders on the market. P-871bender actuators achieve longer positioning ranges thantypical piezo actuators, up to 1.6 mm, and response times in the millisecond range. For ease of installation, the units comecomplete with the mountinghardware, cables and connec- tors.
Application Examples ® Bender actuators aresuperior to conventional actua- tors in high-endurance situa- tions. They show substantiallylonger lifetimes both in staticand dynamic operation, even in harsh environments. The monolithic, ceramic-encapsu- lated design provides better humidity protection than poly- mer-film insulation. Diffusionof water molecules into the insulation layer is greatlyreduced by the use of cofired, outer ceramic encapsulation.

Wire bonding Fiber optic switches Beam deflection and stabilization Scanning of optical com- ponents Alignment of optical com- ponents

E-651 2-channel and 1-channel controllers with P-871 bender actuators © PI 1998-2005. Subject to change w/o notice. Cat 118 05/09.17 1-16