Series 291 Data Sheet ® Electrocomponents 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 (16, 32 Detents) Detent Options 0,16, 24, 32 1-7 CTS Electrocomponents Resolution 4, 6, 8, 24 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) Note: Consult CTS for other common standard features not listed. © 2015 CTS Corporation. All rights reserved. Information subject to change. 1/10/15 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 291V1... 2-Bit Encoder Without Schmitt Trigger, With Left Locating Lug, 0.05” Pitch Pins Formed to Rear Ø .218± .002 5.53± 0.05 .488 12.40 .250 ± .002 6.35 ± 0.05 .218 ±0.002 5.53 ±0.05 1.68 .066 .250 6.35 M ±±.014 0.35 3/8-32UNEF-2A THREADS .031 0.79 .541 5 4 3 2 13.75 .047 R 1.19 C 6 .250 6.35 .281 7.13 .354 9.00 .291 7.40 1 .423 ± .015 .148 10.75±0.38 3.75 CENT. .024 0.60 .132 3.35 PINS ARE 0.4 SQUARE .250 6.35 .246 ± .015 6.25 ±0.38 .050 1.27 CENT. GENERAL TOLERANCE : ± .010 inch ± 0.25 mm DIMENSION: inch mm 2-Bit Encoder Without Schmitt Trigger, With Left Locating Lug, With Cable and Connector 2-Bit Encoder With Schmitt Trigger, With Left Locating Lug, With Cable and Connector TYPE 291C... 291C...B .250 ± .002 ± 0.05 Ø 6.35 .218± .002 5.53 ± 0.05 .488 12.40 .218 ±0.002 5.53 ±0.05 .250 6.35 M ±±.014 0.35 3/8 32 UNEF-2A R .047 1.19 1.68 .250 .066 6.35 .541 13.75 THEADS .031 0.79 C CONNECTOR IS AMP P/N 215083-6 OR EQUIVALENT 6 5 4 3 2 .144 3.65 .281 7.13 1 .125 3.18 CABLE LENGTH See Termination Options 2-7 CTS Electrocomponents .291 7.40 28 AWG CABLE WIRES ON .050 CENTERS 1.27 © 2015 CTS Corporation. All rights reserved. Information subject to change. 1/10/15 www.ctscorp.com TYPE 291V1...S 2-Bit Encoder With Schmitt Trigger, Without Locating Lug, 0.05” Pitch Pins Formed to Rear .218± .002 5.53 ± 0.05 .250 ±0.002 6.35±0.05 .520 13.20 CENT. .488 12.40 CENT. .250 6.35 .154 ±0.002 3.90 ±0.05 3/8-32 UNEF-2A THREADS .014 M ±±0.35 .218 ±0.002 5.53 ±0.05 .066 ±0.002 1.68±0.05 .250 6.35 .541 13.75 C 6 5 4 3 2 .417 10.58 .423 ±.015 10.75±0.38 1 .132 3.35 .050 1.27 TYP. .291 7.40 .148 3.75 .354 9.00 CENT. PINS ARE 0.40 SQUARE .250CENT. 6.35 .350 ±0.015 8.89 ±0.38 GENERAL TOLERANCE : ± .010 inch ± 0.25 mm TYPE 291P1...A 2-Bit Encoder Without Schmitt Trigger, Without Locating Lug, 0.1” Pitch Pins Formed to Rear 291P1...S 2-Bit Encoder With Schmitt Trigger, Without Locating Lug, 0.1” Pitch Pins Formed to Rear .250 ±0.002 6.35±0.05 .218± .002 5.53 ± 0.05 .520 13.20 .488 12.40 .250 6.35 .154 ±0.002 3.90 ±0.05 M ±±.014 0.35 3/8-32 UNEF-2A THREADS .218±0.002 5.53 ±0.05 .250 6.35 C .541 13.75 .291 7.40 .576 ±0.020 14.64 ±0.50 .066±0.002 1.68 ±0.05 .522 13.26 .500 12.70 CENT. .236 6.00 .100 2.54 TYP. .630 16.00 CENT. 6 5 4 3 2 GENERAL TOLERANCE : 3-7 CTS Electrocomponents 1 PINS ARE 0.64 SQUARE 0.450 11.42 ± .010 inch ± 0.25 mm © 2015 CTS Corporation. All rights reserved. Information subject to change. 1/10/15 www.ctscorp.com TYPE 291P1... 2-Bit Encoder Without Schmitt Trigger, With Left Locating Lug, 0.1” Pitch Pins Formed to Rear 291P1...B 2-Bit Encoder With Schmitt Trigger, With Locating Lug, 0.1” Pitch Pins Formed to Rear .250 ±0.002 6.35±0.05 .218± .002 5.53 ± 0.05 .488 12.40 .250 6.35 .154 ±0.002 3.90 ±0.05 M ±±.014 0.35 3/8-32 UNEF-2A THREADS .031 ±0.002 .79 ±0.05 .218±0.002 5.53 ±0.05 .05 R1.20 .066±0.002 1.68 ±0.05 .250 6.35 C .541 13.75 .291 7.40 .576 ±0.020 14.64 ±0.50 .522 13.26 .500 12.70 CENT. .236 6.00 .100 2.54 TYP. .630 16.00 CENT. 6 5 4 3 2 GENERAL TOLERANCE : 1 0.450 11.42 PINS ARE 0.64 SQUARE ± .010 inch ± 0.25 mm TYPE 291C...A 2-Bit Encoder Without Schmitt Trigger, Without Locating Lug, With Cable and Connector TYPE 291C...S 2-Bit Encoder With Schmitt Trigger, Without Locating Lug, With Cable and Connector .250 ±0.002 6.35 ±0.05 .218±.002 .520 13.20 CENT. .488 12.40 CENT. 5.53 ± 0.05 .154 ±0.002 3.90 ±0.05 .066 ±0.002 1.68 ±0.05 .250 6.35 M ± .014 ± 0.35 .218 ±0.002 5.53 ±0.05 .250 6.35 .541 13.75 3/8-32 UNEF-2A THREADS C CONNECTOR IS AMP P/N215083-6 OR EQUIVALENT .417 10.58 .144 3.65 .291 7.40 6 5 4 3 2 1 28 AWG CABLE WIRES ON .050 CENTERS 1.27 CABLE LENGTH See Termination Options GENERAL TOLERANCE : 4-7 CTS Electrocomponents ± .010 inch ± 0.25 mm © 2015 CTS Corporation. All rights reserved. Information subject to change. 1/10/15 www.ctscorp.com TYPE 291V1...A 2-Bit Encoder Without Schmitt Trigger, Without Locating Lug, 0.05” Pitch Pins Formed to Rear .250 0.002 6.35 0.05 .488 12.40 .250 6.35 .218 .002 5.53 0.05 L 3/8-32UNEF-2A THREADS .152 3.86 .014 0.35 .066 1.68 B .250 6.35 .541 13.75 .291 7.40 .423 TYP. 10.75 .050 REF 1.27 .246 0.014 6.25 0.35 .132 TYP. 3.35 .250 CENT. 6.35 GENERAL TOLERANCE : PINS ARE 0.4 SQUARE ± .010 inch ± 0.25 mm TYPE 291V1...B 2-Bit Encoder With Schmitt Trigger, With Left Locating Lug, 0.05” Pitch Pins Formed to Rear .250 0.002 6.35 0.05 .488 12.40 .250 6.35 .218 ±0.002 5.53 ±0.05 .152 3.86 L 3/8-32UNEF-2A THREADS .031 0.79 .014 0.35 .066 1.68 B .250 6.35 .541 13.75 .05 R 1.20 .423 ±.015 10.75±0.38 .291 7.40 .148 3.75 .281 7.13 .132 3.35 .350 ±0.015 8.89 ±0.38 .250 CENT. 6.35 GENERAL TOLERANCE : 5-7 CTS Electrocomponents ± .010 inch ± 0.25 mm © 2015 CTS Corporation. All rights reserved. Information subject to change. 1/10/15 www.ctscorp.com ELECTRIC CIRCUIT AND WAVEFORM (WITHOUT SCHMITT TRIGGER DESIGN) Standard Quadrature 2-Bit Code 8 PPR / 32 DETENTS CW PIN# POWER !! 6 1 PULSE R* CHANNEL A HIGH 5 Nominal Detent Position CHANNEL A R* LOW 4 CHANNEL B HIGH SWITCH TERMINAL 3 CHANNEL B LOW SWITCH TERMINAL GROUND 1 2 3 4 5 6 POSITION NUMBER 1 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 * Require pull-up resistors (2.2K or 4.7K Ω) for application ELECTRIC CIRCUIT AND WAVEFORM (WITH SCHMITT TRIGGER DESIGN) Standard Quadrature 2-Bit Code 24 PPR / 24 DETENTS 8 PPR / 32 DETENTS PIN # POWER 2 CW CW 6 4.7KΩ CHANNEL A 1 PULSE 1 PULSE 5 CHANNEL A HIGH 4.7KΩ CHANNEL B 4 CHANNEL A HIGH LOW LOW SWITCH TERMINAL 3 CHANNEL B HIGH CHANNEL B HIGH SWITCH TERMINAL 2 LOW LOW GROUND 1 1 2 3 4 5 6 Nominal Detent Position POSITION NUMBER * Schmitt trigger and pull-up resistors (4.7KΩ) are integrated inside CTS optical encoder, so it’s not necessary to have external pull-up resistors for application circuit. 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 * Product will function properly with external 2.2KΩ pull up resistors. 6-7 CTS Electrocomponents © 2015 CTS Corporation. All rights reserved. Information subject to change. 2 1 Nominal Detent Position POSITION NUMBER 1. 24 PPR / 24 detents is shown 2. The nominal detent position is located when both Channel A and B are low 3. Channel A Leads Channel B in CW direction and lags in CCW direction 1/10/15 www.ctscorp.com Single Shaft Construction ”z” ”x””Y” F - FLATTED X Y Z Imperial Shaft .250” .218” .250” Metric Shaft 6.35 5.53 6.35 DIMENSION: inch mm Dual Shaft Construction ”inner shaft length” ”outer shaft length” ”Z1” ”B” ”x””Y” ”X1””Y1” ”z” OUTER FLATTED SHAFT DIMENSION D - DUAL X1 Y1 Z1 Imperial Shaft .250” .218” .250” Metric Shaft 6.35 5.53 6.35 X Y B Z Imperial Shaft .125” .094” .250” .256” Metric Shaft 3.18 2.40 6.35 6.50 DIMENSION: inch mm Ordering Information 291 0 V1 22 F 832 B A A TERMINATION V1 - .050” Pitch Center Pins Formed to Rear with .132 length P1 - .10” Pitch Center Pins Formed to Rear with .236 length C4 - .050” Pitch Center 4” Ribbon Cable with Connector C5 - .050” Pitch Center 5” Ribbon Cable with Connector .050” Pitch Center 6” Ribbon C6 Cable with Connector OPERATING VOLTAGE BUSHING LENGTH “B” A - 5.0V B - 3.3V SINGLE SHAFT STRUCTURE 0 - .312” DUAL SHAFT STRUCTURE D - .256” 3/8-32NEF-2A Dia. (Connector is AMP P/N 215083-6 or Equivalent) SHAFT TRIM SCHMITT TRIGGER& LOCATING LUG F - FLATTED OUTPUT COMBINATION SHAFT LENGTH “L” SINGLE SHAFT STRUCTURE 22 - .250” Dia., .687” Length SWITCH A - NONE B - MOMENTARY 832 - 8PPR, 32-DETENTS 624 - 6PPR, 24-DETENTS 416 - 4PPR, 16-DETENTS 800 - 8PPR, NO DETENTS 600 - 6PPR, NO DETENTS 400 - 4PPR, NO DETENTS *X00 - 24PPR, NO DETENTS *X24 - 24PPR, 24-DETENTS *A - WITHOUT SCHMITT TRIGGER, WITHOUT LOCATING LUG *BLANK - WITHOUT SCHMITT TRIGGER, WITH LEFT LOCATING LUG S - WITH SCHMITT TRIGGER, WITHOUT LOCATING LUG B - WITH SCHMITT TRIGGER, WITH LEFT LOCATING LUG *24PPR is only available with schmitt trigger version DUAL SHAFT STRUCTURE DD - Outer Shaft: .250” Dia., .685” Length Inner Shaft: .125” Dia., 1.059” Length Note: Consult CTS for other common features not listed. 7-7 CTS Electrocomponents © 2015 CTS Corporation. All rights reserved. Information subject to change. 1/10/15 www.ctscorp.com