In safety critical manufacturing process applications, redundancy is a key too to protect the operator. In motion control systems, this has meant the use of a redundant incremental encoder. A new incremental encoder design avoids the need for redundancy.

Certified for SIL2/PLd, Category 3 applications, Leine & Linde 850 shaft and 862 hollow-shaft encoders have been revised to provide a guaranteed output signals over a single cable in an industrial environment. Output signal validity is assured by comparing raw sensor signals to digital output states and validating that value against the actual values output to the control.

For more information, contact Bob Setbacken at HEIDENHAIN at 805-562-1160, or e-mail at bsetbacken@heidenhain.com .