VI. Closed-Loop ComputerControl: Displacement of the PZT iscontrolled via the RS-232 com- puter interface with a resolu- tion of 20 bits. The DC-offset potentiometer and BNC analoginput are inactive when in com-puter control mode. Powerful Computer Interface The RS-232 interface supportsfast communication with thehost computer, with up to 300bidirectional read/write opera- tions per second, and also in- cludes a high-precision 20-bit D/A and A/D industrial converter for opti- mum position stability and res-olution. Wave Table User-defined data points, cal-culated with an arbitrary func- tion, can be stored in a WaveTable in the E-665 for later out-put under control of an exter- nal trigger. Multi-Axis Network up to 12 Channels Up to 12 E-665s can be net-worked and controlled over a single RS-232 interface. Parallel networking is used between the E-665’s, providing higher data rates than possible withserial links. Software / Command Set The E-665 controller comeswith Windows™ installation software, DLLs and Lab View™ drivers. The command struc-ture of the extensive commandset is based on the PI General Command Set (GCS). The GCS was developed by PI to facili- tate the programming and operation of a wide range ofdifferent devices with a com-mon command language, thus reducing the programming effort in the face of complex multi-axis positioning tasks. It is also supported by the E-516 Computer Interface Module,and most PI nanopositioningcontrollers and motor con- trollers. For more information on GCS, see p.9-28.

E-665

LVPZT Piezo Amplifier / Servo controller with Fast RS-232 Interface

III. Open-Loop ComputerControl:
Ordering Information Output voltage is controlled viathe RS-232 computer interface with a resolution of 20 bits. TheDC-offset potentiometer andBNC analog input are inactive when in computer control mode.
E-665.SR LVPZT Piezo Amplifier / Servo- Controller, SGS Sensor, RS-232 Interface E-665.LR E-665.CR IV. Closed-Loop (position con-trol mode) Manual Control:
LVPZT Piezo Amplifier / Servo- Controller, LVDT Sensor, RS-232 Interface LVPZT Piezo Amplifier / Servo- Controller, Capacitive sensor, RS-232 Interface Ask about custom designs! Displacement of the PZT can beset by a 10-turn, DC-offset po- tentiometer in the range of zeroto nominal displacement. V. Closed-Loop ExternalControl: Displacement of the PZT is con-trolled by an analog signal inconjunction with the DC-offset potentiometer. With a unipolar actuator, the controller is typi-cally set up and calibrated in such a way that 10 V corre- sponds to maximum nominal displacement and 0 V corre- sponds to 0 displacement. TheDC-offset potentiometer adds a0 to 10 V bias to the input, allowing continuous shifting of the 10-volt-wide input voltage range within -10 V to +10 V (see page 6-52).
E-665.SR Integrated High-Speed RS-232 Interface & 20-bit DAC Network Capability with up to 12 Channels Piezo Driver with 36 W Peak Power SGS, LVDT and Capacitive Sensor Servo control Table for User-Defined Curves I. Open-Loop Manual Control(power-supply mode): GCS (General Command Set) Compatible UL and CSA certified Output voltage can be set by a10-turn, DC-offset potentiome- ter in the range of 0 to 100 V. The E-665 is a bench-top piezolinear amplifier and position servo-controller with integrat- ed high-speed RS-232 comput- er interface and 20-bit D/A con- verter. The low-noise amplifiercan supply/sink a peak currentof 360 mA in a voltage range of -20 to 120 V. Versions are avail- able to operate with SGS, LVDT or capacitive position sensors, making the servo-controller suitable for a wide variety of PIpiezo actuators and stages. TheE-665 can be operated in six different ways: II. Open-Loop External Control(amplifier mode): Output voltage is controlled byan analog signal applied to theBNC input. This input plus any DC-offset must be in -2 to +12 V, which, times the gain factor of 10, gives an output voltage range of -20 to +120 V. The DC-offset ranges from 0 to 10 Vand is set with the front-panelpotentiometer (see page 6-52), allowing continuous shifting of the 14-volt-wide input voltage range within -12 to +12 V.
© PI 1998-2005. Subject to change w/o notice. Cat 118 05/09.17 6-30