Incremental rotary encoder 7700

absoluteopticalnon-contact

Incremental and Virtual Absolute encoder is a compact, non-contact modular encoder with superior performance. Available in many resolutions and configurations, it is easy to install and its optional commutation tracks eliminate hall effect sensors for brushless motors Features common to both models include: ·-40C to +100C operating temperature · Low power consumption · Single phased-array optoelectronic ASIC · LED illumination for long service life (>100,000 hours) Incremental systems (7700 encoder + disc/hub) include: Resolutions up to 5000 cycles/rev (20,000 counts/rev, or 0.018degrees/count) · TTL/CMOS-compatible square wave output, 10mA sink · Standard once-per-rev zero index signal · Optional three-phase 2, 4, 6, or 8 pole pair motor commutation Virtual Absolute systems (7700 encoder + disc/hub + VG, VH or VJ decoder) include: · Resolutions from 12 bits (4,096 steps) to 24 bits (16,777,216 steps) per turn · True absolute position after a small initialization, depending on disc diameter - see disc library table for initialization angles · Compact decoder circuits provide byte-wide parallel (VG), USB (VH), or SSI serial (VJ) outputs . Please refer to individual decoder datasheets for more information · Built-in patented pseudorandom and quadrature error detection for high reliability