|
The E-470 series high-power piezo amplifiers/controllers are specifically designed to drive high-capacitance PICA™ PZT actuators. They are based on the E-421 four-quadrant amplifier module, which can outputand sink a peak current of 500 mA and an average current of 100 mA in a voltage range of 3 to 1100 V (jumper selectable bipolar range also provided). 3 standard configurations are available:
- E-470.20 is a bench-top amplifier in a 9.5" chassis for open-loop operation (1 channel)
- E-471.20 is the amplifier module in a 19" rackmount chassis that can hold additional servo-control, interface and display modules
- E-472.20 is a 2-channel version in a 19" rackmount chassis for dynamic open-loop operation
These amplifiers can be used to drive open and closed-loop piezo positioning systems.
Open Loop Piezo Operation
For open-loop piezo operation the amplifier output voltage is determined by the analog signal at the Control Input combined 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 values is either not important or carried out by an external feedback loop.
Optional Servo Controller Upgrade
The E-471.20 version allows easy installation of an optional E-509 sensor- / servo-controller module for closed-loop piezo position control. In this mode the amplifier is slaved to the E-509 servo controller. Depending on the attached piezo mechanics and feedback sensor, positioning accuracy and repeatability in the nanometer range and below are feasible.
Computer Control
The E-517 computer interface/display module can also be installed in the E-471 / E-472.Optionally digital control via a D/A converter is possible. For several D/A boards from National Instruments PI offers a corresponding LabVIEW™ driver set which is compatible with the PI General Command Set (GCS), the command set used by all PI controllers. A further option includes the patented HyperBit™ technology providing enhanced system resolution.
Please read details on Calibration Information (see link).
|
PDF Catalog Datasheet
