Absolute Rotary Encoders
encoders provide the position value immediately after switch-on, or
after a disturbance – without any axis movement. The encoder
photoelectrically scans Gray-code patterns on a glass graduated disk to
determine the absolute position value. In contrast to singleturn
absolute encoders, which identify the angle position within one
revolution, multiturn absolute encoders also distinguish several
Absolute rotary encoders from HEIDENHAIN output position values via a bidirectional synchronous-serial data interface (EnDat or SSI). The encoders also provide delay-free sinusoidal incremental signals. The EnDat synchronous-serial interface allows automatic parameterization of the subsequent electronics, and provides a monitoring and diagnostic capability.
For resolutions up to 12 bits, unit versions also exist with parallel output signals.
Selection aid: Absolute rotary encoders
|With integral bearing||Mounted stator coupling||
|Separate shaft coupling||