Supports encoders to SIL3 level

SICK (UK) has introduced Hiperface DSL, a fully digital encoder feedback interface with both SIL2 and SIL3 safety capability for the communication of feedback data from brushless servo motors to associated drive electronics.

The Hiperface DSL data protocol has been designed to carry comprehensive sensor data from motor to drive while reducing system costs. It is suitable for use in a range of robotic and automated machinery applications as well as process and packaging equipment.

Darren Pratt, encoder specialist, says: "Hiperface DSL is currently the only motor feedback interface with the capability of supporting encoders to SIL3 levels for both safe speed and safe position functions. In addition, the protocol requires less expensive hardware than current digital encoder feedback systems, enabling significant cost savings." The interface is so robust that cores inside the motor power cable can be used for the communication of feedback data to the drive. The twisted pair traditionally used for the temperature winding sensor in a standard motor power cable can be used for the Hiperface DSL communication.