Renishaw: SiGNUM DUAL READHEAD ROTARY ENCODER SYSTEM(DSi-QNS20)

DSi brings higher accuracy to rotary axes whilst propoZ ™ technology offers a selectable reference mark position. Using two readheads on an angle encoder improves the accuracy of the system by eliminating eccentricity, bearing wander and all odd error harmonics. DSi makes adding that second readhead easy by taking care of the combination of incremental channels and reference mark processing. DSi features patented propoZ technology that allows the customer to select reference output position with the press of a button.

The propoZ output position is angularly repeatable, regardless of bearing wander or power cycling. DSi is available in two versions, known as ‘local’ and ‘remote’. The local version is mounted directly onto the readhead interfaces, while the remote version can be mounted up to 30 metres away. Each version is available with either line-driven or 3-state alarms. Resolution is determined by the encoder interfaces that are connected to the DSi. DSi is available with several retiming frequencies to suit industry-standard controllers. Version now available for partial arc applications.