In order to meet the needs of manufacturers of small servomotors and actuators, Heidenhain has introduced an expansion of its small-diameter 1000 and 1100 series rotary encoders with added versions now available with Siemens Drive-Cliq. Heidenhain’s models ECN/EQN 1000S, ROC/ROQ 1000S and ECN/EQN 1100S rotary encoders with integrated Drive-Cliq interface feature a compact design with 35 mm diameter, while permitting a high operating temperature of 95°C.
                                              
This new combination is certified by Siemens and is an addition to Heidenhain’s existing small-diameter 1000/1100 series encoders that have the same mounting dimensions using EnDat and SSI interfaces.
 
Furthermore, the ECN/EQN 1100S encoders for integration into motors feature a singleturn resolution of 23 bits and, as with the standard rotary encoders, a mechanical multiturn gear with a resolution of 12 bits. The ECN/EQN 1100S series rotary encoders also feature a hollow shaft (Ø 6 mm) with an anti-rotation element and a stator coupling. They are mechanically connected by axial clamping with mechanical fault exclusion and are suitable for Functional Safety applications in accordance with SIL 2, Category 3, PL d.
 
The ECN/EQN 1000S series rotary encoders are available with a blind hollow shaft (Ø 6 mm) for radial clamping and a stator coupling, while the ROC/ROQ 1000S series encoders are available with a solid shaft (Ø 4 mm) and a synchro flange.
 
The ECN/EQN 1000S, ROC/ROQ 1000S, and ECN/EQN 1100S have been tested and approved by the Siemens Drive-Cliq Support Center. The Siemens encoder list for certified encoders with Drive-Cliq interface confirms that these encoders can be used in conjunction with the Sinamics/Simotion or Sinumerik.