Incremental position sensor display VL18

LED7-segmentfor linear encoders

Thecombines the opto-mechanical simplicity and ruggedness of an incrementalencoder with the interfacing ease of an absolute encoder. Utilizing Gurley's uniquetechnology, thesystem is less expensive and more reliable than anyconventional absolute encoder of comparable resolution and accuracy. Compared with anincremental encoder, thesystem provides greater system reliability and minimizes homingtime.1-μm resolution over 1 meter of travel, or ¼-μm resolution over 250 mm.Three accuracy grades availableLED illumination for long life (>100,000 hours)Differential photo-detectors for stable signalsSmall number of wires from the encoderDifferential output for noise immunity VL18HPage2of5V3.1SPECIFICATIONSGPIGPIIIIIIIIIIIIIIIGurley Precision Instruments514 Fulton StreetTroy, NY 12180 U.S.A.(800) 759-1844, (518) 272-6300, fax (518) 274-0336,Online at www.gurley.com, e-mail: info@gurley.comAs part of our continuing product improvement program, all specifications are subject to change w i thout notice.See NoteScale pitch, μm13264Initialization distance, mm (in)0.480 (0.019)0.768 (0.030)Code length, bits1512Final resolution, μm110.25Max. measuring length, mm1038252Interpolating Decoder to useVBVFMaximum operating speed, mm/s (in/s)31000 (40)600 (24)Accuracy (at 20°C), μm (μin)2Grade A:Grade B:Grade C:±3 (±120)±5 (±200)±10 (±400)Weight, kg (lb)0.4 + 0.6/m (0.9 + .03/in)Driving force, N (oz)1.5 (6)Operating temperature, °C (°F)0 to 50 (32 to 122)Humidity, % rh, non-condensing98Shock50 g, 11 msVibration15 g, 0-2000 HzSealingIP54Read Head supportprecision ball bearings