Encoders and Measurement Systems RFQ

Category sourcing notes

What to capture for encoders and measurement systems rfq

Encoders and measurement systems are defined by resolution, output protocol, and mechanical interface, and any of these can make two similar references incompatible. A measurement RFQ that names the resolution, the interface, and the mounting is quickest to confirm.

For rotary encoders, record resolution (pulses per revolution or bit count), type (incremental or absolute), output or protocol (HTL, TTL, SSI, EnDat, BiSS, or a fieldbus), shaft or hollow-bore dimension, and flange style. Encoders that share a housing frequently differ in protocol, so the output type is as important as the mechanical fit.

For linear scales and absolute feedback, capture measuring length, accuracy grade, interface, and mounting method. These systems are matched to a specific machine axis and control, so noting the control it feeds helps confirm that the interface and reference marks are compatible.

Measurement interfaces and accessories — cables, couplings, interface cards — should name the encoder or scale they serve. A cable that mates the connector can still carry the wrong pinout for a different protocol, so the parent device and its interface belong in the request.