ID Chip
Incremental Encoder
Input Level
Input Voltage Range
Integrated Position Sensor

An ID chip is in the connector of many piezo stages. When the stage is calibrated at the factory with a digital controller, the calibration data is saved together with specific product information on the ID chip. When switched on, digital controllers read the data from the ID chip of the connected stage. Stages, whose ID chip contains the calibration data, can therefore be connected to any suitable digital electronics without renewed calibration.

When incremental encoders are in motion, they generate impulses that are counted by the controller. However, in contrast to absolute encoders, it is a question of determining a relative position. To determine an absolute position, a limit switch or reference switch signal must also be referenced.

Permissible input level for digital interfaces.

For piezo controllers and drivers. Recommended range from -2 to 12 V. the usual gain value of 10 leads to an output range of -20 to 120 V. Most PI controllers allow an input range of -3 to 13 V.

Absolute measuring capacitive, piezo resistive (PRS) or strain gauge (SGS) and optical (absolute and relative) sensors are used to provide position information to the controller.