Series 291 Precision, Long-life 12mm Optical Encoder ▪ Available with 4, 6, 8, 24,32, 64 Pulses per Revolution ▪ Optional Momentary Switch ▪ Multiple options for terminations, resolution, cable lengths, and operating voltage Description The 291 Series allows versatility in design applications by providing highly reliable, precise digital output and long rotational life with our non-contacting design. This product provides flexibility in resolution, power consumption, and operating temperatures. The options of Schmitt trigger, detents, momentary switch, shaft & bushing length, dual shaft, termination styles, torque, operating voltage, and IP ratings provide flexibility to meet your exacting design requirements. Ordering Information Bushing Shaft Shaft Output Operating Switch Schmitt Trigger Series Termination Length Length Trim C C o m b i n a t i o n V o l t a g e & L o c a t i n g L u g 291 V1 0 22 F 832 A B A S RTTT T T T T 2022124 1 2 1 E T T T E Code Spec. Code Spec. Code Termination T Code Shaft Length “L” .050” pitch pins F Flat A None T Single shaft structure MomentaTrSyS V1 Rear facing 22 .687” S Slotted B (not for 64 PPR) .132” length(not for 64 PPR) .10” pitch pins 24 .875” Output Combination Dual shaft structure P1 Rear facing Code Spec. DD Outer shaft: .685” 8 32 8 PPR, 32 Detents .236” length Inner shaft: 1.059” 624 6 PPR, 24 Detents Without Schmitt trigger, 4” ribbon cable *C4 With .050” pitch (luNgo, t3 a2v aaniladb 6le4 wPPitRh, l osecaet pinagg e 5 p4o1s6it i o n s 4 PPR, 16 Detents BLANK W3 2i,t h6 4lo PcPaRti)n g lug (not for connector terminals (not 800 8 PPR, No Detents 8 for additional details) Without Schmitt trigger, for 64 PPR) 600 6 PPR, No Detents A Without locating lug (not 5” ribbon cable 400 4 P PR, No Detents for 32, 64 PPR) *C5 With .050” pitch 24 PPR, No Detents With Schmitt trigger, connector terminals (not X00 ( o nly available with S Without locating lug for 64 PPR) Schmitt trigger) With Schmitt trigger, 6” ribbon cable 24 PPR, 24 Detents B With locating lug With .050” pitch X24 (only available with *C6 connector terminals (not Schmitt trigger) for 64 PPR) 32 PPR, No Detents Code Spec. Y00 (only available with Schmitt trigger) A 5.0V Code Bushing Length “B” 64 PPR, No Detents B 3.3V (not for Z00 (only available with 64 PPR) 0 .312” For single shaft construction Schmitt trigger) .256” For dual shaft construction D ( n o t f o r 3 2, 64 PPR) Note : * Cable connector for C4, C5, C6 is AMP P/N 215083-6 or Equivalent 2017-07-24 Rev. D www.ctsc o rp.com Page 1 of 13 ©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.

Series 291 Compact Optical Encoder Electrical Specifications Encoder Function Conditions & Parameter Min Nominal Max Unit Remarks 4.75 5.0 5.25 Voltage (4, 6, 8, 24, 32 PPR) 3 . 1 7 5 3.3 3.425 VDC Voltage (64 PPR) 4.5 5.0 5.5 VDC 2-Bit Quadrature Channel A leads Output Code Channel B by 90° during clockwise rotation 5.0 VDC 2 . 0 m A Sink Current 3.3 VDC 1.0mA 5.0 VDC 150 mW Power Consumption 3.3 VDC 80 mW Pulses per Resolution 4, 6, 8, 24, 32, 64 Revolution Mechanical and Environmental Manual Soldering Maximum temperature of 350°C for 5 seconds RoHS Lead-Free. Fully compliant to RoHS Directive Shock : Per MIL-STD-883F ( 100G’s) Vibration : Per MIL-STD-883F ( 15G’s) IP Rating (4, 6, 8, 24, 32 PPR): IP 50 IP Rating (64 PPR): IP 40 Packaging : Standard anti-static tray packaging Operating Temperature: -40°C to +85°C Storage Temperature: -55°C to +100°C Storage Temperature: -40°C to +100°C (32, 64 PPR) No detent @ 30 RPM 3 Million Cycles Rotational Life With detent @ 30 RPM 1 Million Cycles Push-Pull Strength of Shaft (4,6,8,24, 32 PPR) 10 seconds 20 kg (64 PPR) 10 seconds 13.6 kg Terminal Pull-out Strength 1 0 seconds 6 kg Rotational Torque (4, 6, 8, 24 PPR) Running 10 to 30 gf-cm (32 PPR) Running 3 0 g f - c m M a x . (64 PPR) Running 100 gf-cm Max. 24 Detents 9 0 t o 1 9 0 g f - c m Rotational Torque 16, 32 Detents 50 to 150 gf-cm Detent Options 0, 16, 24, 32 2017-07-24 Rev. D www.ctsc o rp.com Page 2 of 13 ©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.

Series 291 Compact Optical Encoder Optional Momentary Switch Function: Parameter Conditions & Remarks Min. Nominal Max Unit Switch contact resistance 10 ohms Switch rating 5 VDC @10 mA Switch travel 0.25 0.5 0.75 mm Actuation Force 400 510 620 grams Switch Life Standard 1 Million Actuations Switch Life Consult CTS for custom life requirements Mechanical Specifications Figure 1 – 291V1… – Without Schmitt Trigger, With Left Locating Lug, .050” Pitch Pins Facing Rear 2017-07-24 Rev. D www.ctsc o rp.com Page 3 of 13 ©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.

Series 291 Compact Optical Encoder Figure 2 – 291V1…S – With Schmitt Trigger, Without Locating Lug, .050” Pitch Pins Facing Rear 2017-07-24 Rev. D www.ctsc o rp.com Page 4 of 13 ©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.

Series 291 Compact Optical Encoder Figure 3 – 291V1…A – Without Schmitt Trigger, Without Locating Lug, .050” Pitch Pins Facing Rear 2017-07-24 Rev. D www.ctsc o rp.com Page 5 of 13 ©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.

Series 291 Compact Optical Encoder Figure 4 – 291V1…B – With Schmitt Trigger, With Locating Lug, .050” Pitch Pins Facing Rear 2017-07-24 Rev. D www.ctsc o rp.com Page 6 of 13 ©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.

Series 291 Compact Optical Encoder Figure 5 – 291P1…A – Without Schmitt Trigger, Without Locating Lug, .100” Pitch Pins Facing Rear 291P1…S – With Schmitt Trigger, Without Locating Lug, .100” Pitch Pins Facing Rear 2017-07-24 Rev. D www.ctsc o rp.com Page 7 of 13 ©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.

Series 291 Compact Optical Encoder Figure 6 –291P1… – Without Schmitt Trigger, With Locating Lug, .100” Pitch Pins Facing Rear 291P1…B – With Schmitt Trigger, With Locating Lug, .100” Pitch Pins Facing Rear 2017-07-24 Rev. D www.ctsc o rp.com Page 8 of 13 ©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.

Series 291 Compact Optical Encoder Figure 7 –291C… – Without Schmitt Trigger, With Locating Lug, With Ribbon Cable 291C…B – With Schmitt Trigger, With Locating Lug, With Ribbon Cable 2017-07-24 Rev. D www.ctsc o rp.com Page 9 of 13 ©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.

Series 291 Compact Optical Encoder Figure 8 – 291C…A – Without Schmitt Trigger, Without Locating Lug, With Ribbon Cable 291C…S – With Schmitt Trigger, Without Locating Lug, With Ribbon Cable 2017-07-24 Rev. D www.ctsc o rp.com Page 10 of 13 ©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.

Series 291 Compact Optical Encoder Figure 9 – 291P1…Z00AA – 64 PPR, With Schmitt Trigger, With Locating Lug, .100” Pitch Pins Facing Rear, Without Momentary Switch 4, 6, 8, 24 PPR 2017-07-24 Rev. D www.ctsc o rp.com Page 11 of 13 ©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.

Series 291 Compact Optical Encoder 4, 6, 8, 24, 32 PPR 64 PPR 2017-07-24 Rev. D www.ctsc o rp.com Page 12 of 13 ©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.

Series 291 Compact Optical Encoder 2017-07-24 Rev. D www.ctsc o rp.com Page 13 of 13 ©2017 CTS® Corporation. Information/product(s) subject to change. No warranty that product(s) will meet the stated specifications for customer specific applications or test equipment. Visit www.ctscorp.com for list of applicable patent(s), more information, or to request a quote.