Renishaw: SiGNUM™ DSi dual readhead rotary encoder system

QSiQMM10

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 meters 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.

Features

· Works with SiGNUM™ angle encoders to give very high accuracy

· Compensates encoder measurement errors caused by: - bearing wander - eccentricity - all odd error harmonics

· propoZ customer selected reference output position

· propoZ is angularly repeatable and unaffected by bearing wander or power cycling

· ‘Local’ version mounts directly onto the rear of the SiGNUM™ interfaces

· ‘Remote’ version can be located up to 30 meters from the SiGNUM™ interfaces

· RS422 digital quadrature signals