® Electrocomponents Series 291 Data Sheet Optical Encoder Precision, Long-life Compact 12mm Size Optical Encoder Features • Package Size (12 X 14 X 7 mm) • 3 Million life cycles (No detent) • 1 Million life cycles(With detent) • Durable Metal Shaft & Bushing • Optional momentary switch • Multiple options for terminations, resolution,cables, voltage • RoHS Compliant Electrical and Mechanical Specifications Encoder: Operating Voltage 5.0 ± 0.25 VDC 3.3 ± 0.125 VDC Supply Current 5.0 VDC @ 30mA maximum 3.3 VDC @ 24mA maximum Output Code 2-Bit Quadrature Channel A leads channel B by 90° electrically during clockwise rotation of the shaft Minimum Sink Current 2.0 mA for 5.0 VDC 1.0 mA for 3.3 VDC Power Consumption 150 mW maximum for 5.0 VDC 80 mW maximum for 3.3 VDC Rotational Torque Running: 20 ± 10 gf-cm Detent: 140 ± 50 gf-cm (24 Detents) 100 ± 50 gf-cm (32 Detents) Detent Options 0, 24, 32 1-3 CTS Electrocomponents Resolution 6, 8 Pulses per Revolution Rotational Life (@30 RPM) 3 Million cycles (No detent) 1 Million cycles (With detent) Temperature Range Operating: - 40°C to 85°C Storage: - 55°C to 100°C Push-Pull Strength of Shaft 20 kg minimum for 10 seconds Terminal Pull-out Strength 6 kg minimum for 10 seconds Solder Heat Resistance 350°C for 5 seconds Mechanical Vibration 15G, ( MIL-STD-883F-2004) Mechanical Shock 100G, ( MIL-STD-883F-2004) Special Consult CTS for custom features not listed © 2011 CTS Corporation. All rights reserved. Information subject to change. 7/17/12 www.ctscorp.com Electrical and Mechanical Specifications (continued) Optional Momentary Switch: Switch Contact Resistance 10 Ω maximum Actuation Force 510 ± 110 grams Switch Rating 5 VDC @ 10 mA Switch Life Standard: 1 Million actuations minimum Special: Consult CTS for custom life requirements. Switch Travel 0.5 ± 0.25 mm TYPE 291V 2-Bit Encoder With Momentary Switch, Shaft Perpendicular to PC Board Ø .218± .002 5.53 ± 0.05 .250 ± .002 6.35 ± 0.05 .488 12.40 .250 6.35 .250 ± .002 6.35 ± 0.05 L ±±.014 0.35 3/8-32UNEF-2A THREAD .031 0.79 .541 13.75 .047 R 1.19 .281 7.13 B .354 9.00 6 5 4 3 2 PINS ARE 0.4 SQUARE .250 6.35 1 CENT. .024 0.60 .291 7.40 .423 ± .014 .148 10.75±0.35 3.75 .246 ± .015 6.25 ±0.38 .050 1.27 CENT. GENERAL TOLERANCE : ± .010 inch ± 0.25 mm DIMENSION: TYPE 291C inch mm 2-Bit Encoder With Momentary Switch, Cable, and Connector .250 ± .002 ± 0.05 Ø 6.35 .218± .002 5.53 ± 0.05 .488 12.40 .250 ± .002 6.35 ± 0.05 L ±±.014 0.35 3/8 32 UNEF-2A THEAD .031 0.79 R .047 7.13 .250 6.35 .541 13.75 B CONNECTOR IS AMP P/N 215083-6 OR EQUIVALENT .291 7.40 6 5 4 3 2 .354 9.00 1 .148 3.75 GENERAL TOLERANCE : 2-3 CTS Electrocomponents ± .010 inch ± 0.25 mm CENT. .281 7.13 .024 0.60 CABLE LENGTH See Termination Options © 2011 CTS Corporation. All rights reserved. Information subject to change. 7/17/12 www.ctscorp.com ELECTRIC CIRCUITRY AND WAVEFORM Standard Quadrature 2-Bit Code PIN# POWER 8 PPR/ 32 DETENTS CW 6 R* 1 PULSE CHANNEL A 5 HIGH R* CHANNEL B CHANNEL A 4 SWITCH TERMINAL HIGH 3 SWITCH TERMINAL Nominal Detent Position LOW CHANNEL B 2 LOW 1 GROUND 1 2 3 4 6 5 POSITION NUMBER * External pull-up resistors required for operation(2.2K ohm) 1. 8 PPR/32 detents is shown 2. Code repeats every 4 positions 3. Channel A Leads Channel B in CW direction and lags in CCW direction Shaft Trim ”z” ”x” ”x” ”Y” R - ROUND F - FLATTED X Imperial Shaft .250” Metric Shaft 6.35 X Y Z Imperial Shaft .250” .218” .250” Metric Shaft 6.35 5.53 6.35 Ordering Information 291 V1 0 22 F 832 TERMINATION SHAFT TRIM V1 - .050” Pitch Center Pins Form to Rear with .144 length R - ROUND F - FLATTED C4 - .050” Pitch Center 4” Ribbon Cable with Connector C5 - .050” Pitch Center 5” Ribbon Cable with Connector C6 - .050” Pitch Center 6” Ribbon Cable with Connector Connector is AMP P/N 215083-6 or Equivalent mm D - 9.53mm M9X.75P 3-3 CTS Electrocomponents inch 2 - .250” 3 - .375” 0 - .312” A inch mm B OPERATING VOLTAGE SWITCH A - 5.0V B - 3.3V A - NONE B - MOMENTARY "L" SHAFT LENGTH mm "B" BUSHING LENGTH DIMENSION: A5 - 15mm B0 - 20mm B5 - 25mm C0 - 30mm inch 20 - .625" 22 - .688" 24 - .750" 28 - .875" 32 - 1.000" ALL ALL 6.35mm Dia. .250" Dia. OUTPUT COMBINATION 832 624 800 600 - 8PPR, 32-DETENTS - 6PPR, 24-DETENTS - 8PPR, NO DETENTS - 6PPR, NO DETENTS 3/8-32 UNEF-2A © 2011 CTS Corporation. All rights reserved. Information subject to change. 7/17/12 www.ctscorp.com