Encoders simplify machine safety designs

Heidenhain offers Leine & Linde 850 shaft and 862 hollow-shaft encoders. This technology allows incremental encoders to be applied where safe operation of machinery is necessary without requiring a redundant encoder or secondary sensing device.

The products are certified for SIL2/PLd, Category 3 applications. Output signal validity is ensured by comparing raw sensor signals to digital output states and validating that against the actual values output to the control. If all values are not in agreement, or the power supply is not within specifications, a status signal signifies the output is invalid.