Closed-Loop Digital Piezo Controller Line Expanded

Closed-Loop Digital Piezo Controller Line Expanded

More Bits to Byte into Your Positioning Applications

E-712 Digital Piezo Controller

Modular controller for up to 6 axes for highest precision, up to 50 kHz servo update rate, extensive software package, flexible interfaces.

Fig. 6: A selection of high-resolution closed-loop digital piezo controllers, with integrated high voltage drivers, 1-4 channels with various interfaces

PI has again extended its selection of closed-loop digital servo piezo controllers (Fig. 6). 1-4 channel models (up to 7 channels for special designs) in a variety of forms furnished with versatile digital and analog interfaces are now available. 

Some key interfaces available include:

  • High-speed fiber link (1 Mbit/s)
  • Parallel port (PIO)
  • DSP link
  • RS-232
  • IEEE 488
  • High-speed analog

All piezo controllers feature 32-bit digital servo-loop technology, extremely low-noise piezo high voltage power amplifiers, and capacitive feedback position sensor inputs. A linearity of up to 0.001% in positioning motion is possible depending on the positioning mechanism. 


To operate and optimize configuration, a comprehensive assortment of software (DLLs, LabView driver etc.) is supplied with these devices (Figs. 7 & 8). The mechanical parts include ID chips containing all calibration data that is transferred to the controller when powered up. This feature ensures reliable, optimal operation with the added bonus of allowing the controller and the nanopositioning system to be interchanged at will.

Abb. Fig. 7: A Bode plot can be produced, among other things, by using the NanoCapture software for piezo digital controllers to obtain precise analysis of the attached nanopositioning mechanism.
Abb. Fig. 8: The software can even analyze analog control signals to high-precision.

Related Products and Additional Resources

Advances in Piezo Nanopositioning Controllers – Digital vs. Analog

PI Piezo Tutorial: Closed-loop Piezo Motion Control, Position Servo Control (Closed Loop Operation)

Piezo Flexure Stages <1mm

PI offers the broadest and deepest portfolio of nanometer precision motion technologies, from piezo-driven nanopositioning and scanning stages to motorized 6-axis hexapod positioning systems.

E-709.1C1L Compact and Cost-Optimized Digital Piezo Controller

For piezo-based single-axis nanopositioning systems with capacitive sensors. Output voltage -30 to 130 V. Temperature stable in less than 10 minutes.

This is a legacy product that may have limited availability or may have been replaced. Ask a PI engineer for an equivalent new model.

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