Computer Control The E-516 computer inter-face/display module can also be installed in the E-481.Optionally digital control via aD/A converter is possible. For several D/A boards from National Instruments PI offers a corresponding LabVIEW

E-481

High-Power PICA

TM

HVPZT Piezo Amplifier / Controller with Energy Recovery

Ordering Information E-481.00 HVPZT Piezo Amplifier / Controller, Energy Recovery, 1100 V, 2000 W, 19’’Note: Requires piezo actuators withoption P-177.50Temperature sensor and protectiveair UpgradesSensor / Servo control ModulesE-509.C1A Sensor / Servo controller Module, Capacitive sensor E-509.L1 Sensor / Servo-Controller Module, LVDT-Sensor E-509.S1 Sensor / Servo-Controller Module, SGS-Sensor Interface- / Display Module, 20 Bit D/A, IEEE 488 / RS-232, 1 Channel Interface / Display Modules E-516.i1 E-515.01 Display Module for PZT Voltage and Position E-481.00 with optional E-509 Servo-Controller and E-516 Interface and Display Module E-500.HCD Hyperbit Peak Power 2000 W Energy Recovery Output Voltage 0 to ±1000 V or Bipolar
TM Optional Servo ControllerUpgrade Optional Position Servo-Control Modules driver set which is compatible with the PI General Command Set (GCS), the command set used by all PI controllers. A fur- ther option includes the patent- ed Hyperbit Computer Interface & Display Modules The E-481.00 allows easy in-stallation of an optional E-509 sensor- / servo-controller mod-ule for closed-loop piezo posi- tion control. In this mode the amplifier is slaved to the E-509 servo controller. Depending on the attached piezo mechanics and feedback sensor, position- ing accuracy and repeatability in the nanometer range and below are feasible. Selectable Output Range
TM technology pro-viding enhanced system reso- lution. The E-481 high-power piezoamplifier/controller is specifi- cally designed for dynamic operation of high-capacitance PICA Open-Loop and Closed-LoopOperation Thermal Piezo ProtectionCircuit
ff . TM Functionality forEnhanced System ResolutionSupports certain D/A boards. Extension cables, adapters & industrial connectors: see in “Accessories” in the “Piezo Drivers & Nano- positioning controllers” section, page 6-56 Ask about custom designs! E-481 amplifiers can be used todrive open- and closed-loop piezo positioning systems.For open-loop piezo operationthe amplifier output voltage is determined by the analog sig- nal at the Control Input com- bined with the DC-offset potentiometer setting. Open- loop operation is ideal for applications where the fastest response and the highest bandwidth are essential. Here, commanding and reading the target position in absolute val- ues is either not important or carried out by an external feed- back loop. The Control In sig- nal can be adjusted by various settings. The E-481 features a tempera-ture sensor input and control circuit to shut down the ampli- fier if the connected piezo ceramic exceeds a maximum temperature threshold. Please read details on Cali-bration Information, page 6-53.
TM PZT actuators. The E-481 is based on a noveldesign combining pulse width modulation and energy recov- ery. Instead of dissipating the reactive power in heat sinks, this energy is temporarily stored in inductive elements. Only the active power used by the piezo actuator has to be delivered. The energy not used by the actuator is returned to the amplifier and reused as supply voltage via a step-up transforming process. A peak sink and source current of up to 2000 mA is possible. The output range can be set topositive, negative or bipolar, and provides a voltage swing of1100 V in open-loop operation.
© PI 1998-2007.Subject to change without notice. This data sheet is superseded by any newrelease. The newest release is available for download at www.pi.ws. 07/02/27.0 6a-8