PZU-2000 Series XYZ Automated Stage with Piezo Z-Axis Top Plate

About the PZU-2000

The PZU-2000 XYZ stage has been specifically designed to provide a high resolution, and highly repeatable, means of controlling the X-, Y-, and Z-position of the microscope stage. The X- and Y-axes derive their precise control through the use of closed-loop DC servomotors employing high-resolution rotary encoders for positioning feedback. By using closed-loop control for the stage position, there is no chance that the stage will become lost, as can occur with open-loop micro-stepped stages after a number of moves and direction changes. The XY stage utilizes crossed-roller slides, high-precision lead screws, and zero-backlash miniature geared DC servomotors for smooth and accurate motion. The top plate of the stage accepts standard K-size slide inserts that are available for any sample, i.e., slides, petri dishes, multi-well plates, etc. The slide insert is moved in the Z-axis via a piezo element with a range of 150 μm with nanometer accuracy (300 μm & 500 μm range is also available). By moving the sample in the Z-plane, any objective can be used, eliminating twisting wires or needed spacers as required when a piezo element is put onto a single objective. The microprocessor-controlled MS-2000 control unit provides for RS-232 and USB communication with a host computer for control of the XYZ axes.

More Info

PZU-2000 Features
  • Closed-loop control of the X-, Y-, and Z-axes for precise positioning and highly repeatable focusing.
  • Wide dynamic speed range with adjustable trapezoidal move profiles.
  • Smooth adjustable dual-range joystick control
  • Proven operation with many popular software packages
ADEPT Piezo Controller Specifications
Specification PZ-2150 PZ-2300 PZ-2500
Piezo travel range (± 5%) 150 μm 300 μm 500 μm
Piezo smallest move / resolution* 2.2 nm 4.5 nm 7.6 nm
Maximum load for full range travel 2 kg 1 kg 1 kg
Transient response time** 11 – 15 ms
External analog input (BNC) 0 – 10 V
Maximum input frequency 20 Hz

**Time taken to travel 10%-90% for moves below 30% travel range with 600 grams load.

*In external input mode, use of a higher bit DAC will increase resolution. For example a 0-10 analog voltage from the DAC results in the following:

External analog input Steps Resolution
16 bit DAC 65536 2.2 nm
17 bit DAC 131075 1.1 nm
18 bit DAC 262144 0.55 nm