Series 288 Encoder ® 16 mm Rotary Encoders Features • Low cost, robust design • Miniature 16mm style • Bushing mounted • PC terminals, with shaft aprallel or perpendicular to PC board • 2 bit, 4 bit Gray and 4 bit Hexidecimal codes available • 16 detents available • Optional momentary switch • RoHS compliant Electrical and Mechanical Specifications Voltage Rating 5VDC @ 0.5milliamp Rotational Life 50,000 cycles min. Current Rating 5mA max. Switch Life Temperature Rating Operation: -25°C to +100°C Switch Contact Resistance 100 milliohms maximum initial 200 milliohms maximum after life 15,000 operations for 0.5mm(.020") travel Contact Resistance 500 ohms static closed circuit maximum Contact CTS for special requirements Switch Operation Force 350 ±150 gf (12.3 oz ±5.3 oz) Detent Points 16 detents avaialable Switch Bounce 5 milliseconds max. Resolution Switch Rating 4,6,8,10 or 12 pulses in 360° on 2 bits Switch Travel Length 0.5mm (.020”) Total Rotational Angle 360° Rotational Torque 36~216 gfcm (0.5~3 in-oz) Contact CTS for special requirements 1-4 CTS Electronic Components Pull and Thrust on Shaft Withstand a pushing force and pulling force of 8 kg static load applied to axial direction for 10 ±1 second without physical damage or electrical degradation © 2006 CTS Corporation. All rights reserved. Information subject to change. 10/05/06 www.ctscorp.com 4 BIT GRAY CODE POS. TRUTH TABLE 2 BIT BINARY DENOTES B CONTACT CLOSURE TO A COMMON POS. NO. NO. 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 46 47 48 4 BIT HEXIDECIMAL DENOTES CONTACT CLOSURE TO COMMON A B E 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 0 1 1 0 1 0 1 1 1 1 1 0 1 0 1 1 1 1 0 0 0 0 0 1 0 1 0 0 0 POS. NO. F 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 DENOTES CONTACT CLOSURE TO COMMON A B E F 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 X288 Typical 2-bit Encoder parallel to P.C. Board MTG. SURFACE 10.2±0.4 .402±.016 18.0 .709 0.8 .031 10.00±0.05 .394±.002 0.4 "A"±.016 MAX. 8.5 .335 7.9±0.13 .311±.005 C 16.4 .646 5.00±0.05 .197±.002 MTG. SURFACE MAX. 11.20 .441 A "L"± 6.83±0.05 .269±.002 12.50 .492 B 3/8-32UNEF-2A C A Ø1.40 (3) .055 B DIMENSION : mm INCH X2-288 Typical 4-bit Encoder parallel to P.C. Board MTG. SURFACE 18.0 .709 MTG. SURFACE MAX. 3.68±0.05 .145±.002 3/8-32UNEF-2A 8.5 .335 7.9±0.13 .311±.005 11.2 .441 MAX. 12.5 .492 A C B E D F 8.10±0.05 .319±.002 Ø1.40 (6)HL'S. .055 B F C 16.4 .646 D A E 0.4 "A"± .016 15.1±0.4 .594±.016 0.4 "A"± .016 5.00±0.05 .197±.002 10.00±0.05 .394±.002 DIMENSION : 2-4 CTS Electronic Components © 2006 CTS Corporation. All rights reserved. Information subject to change. mm INCH 10/05/06 www.ctscorp.com T288 Typical 2-bit Encoder With Solder Lug Terminals MTG. SURFACE 10.2±0.4 .402±.016 "L"±0.8 ±.031 MAX. 18.0 .709 "A"±0.4 ±.016 MAX. 8.5 .335 7.9±0.13 .311±.005 11.2 .441 3/8-32UNEF-2A 10.9 .429 A 2.18X1.52 HL'S(3) .086X.060 C B 2.92±0.08 .115±.003 16.4 .646 DIMENSION : mm INCH V288 Typical 2-bit Perpendicular to P.C. Board MTG. SURFACE 10.2±0.4 .402±.016 3/8-32UNEF-2A 18.0 .709 MAX. 8.5 .335 7.9±0.13 .311±.005 6.4 .252 5.00±0.05 .197±.002 MAX. 12.5 .492 0.4 "A"± .016 A C CENTER LINE OF ENCODER Ø1.40(3) HL'S 12.70 .500 .055 B A 16.4 .646 0.8 "L"± .031 10.00±0.08 .394±.003 C B DIMENSION : mm INCH MC-V288 Typical 2-bit Encoder With Momentary Switch Perpendicular to P.C. Board MTG. SURFACE 12.26 .483 10.76 "L"± 0.8 .031 7.9±0.13 .311±.005 8.5 MAX. .335 (2) HL'S Ø1.70 (2) .067 Ø1.40 (3) HL'S .055 4.87 .192 "A"± 0.4 .016 A 0.5 TRAVEL .020 (REFERENCE) C C 2.5±0.13(2) .098±.005 5.00±0.13 (2) .197±.005 A 12.5 .492 S1 S2 B .424 MAX. 18.0 .709 3/8-32UNEF-2A 7.0±0.13 .276±.005 B 13.30±0.13 .524±.005 16.4 .646 DIMENSION : mm INCH MC-X288 Typical 2-bit Encoder With Momentary Switch Parallel to P.C. Board 12.26 .483 18.0 MTG. SURFACE MAX. 10.00±0.08 .394±.003 .709 MTG. SURFACE 5.00±0.05 3/8-32 UNEF-2A 10.76 .424 .197±.002 8.5 MAX. .335 7.9±0.13 .311±.005 12.5 .492 6.83±0.13 .269±.005 B C A Ø1.40 (5)HL'S. 0.5 TRAVEL .020 (REFERENCE) 0.4 "A"± .016 "L"± 0.8 .031 3-4 CTS Electronic Components A C 3.07±0.13 B 4.0 .157 1.00±0.13(5) 0.39±.005 16.4 .646 S1 S2 .121±.005 2.5±0.05 .098±.002 2.5±0.05 .098±.002 PANEL PIERCING © 2006 CTS Corporation. All rights reserved. Information subject to change. DIMENSION : mm INCH 10/05/06 www.ctscorp.com Ordering Information T 288 B 24 F 40 2 A 1 TERMINAL STYLE SWITCH CODE * T – SOLDER LUG X – PC V – PC FORMED TO REAR A – NONE * B – MOMENTARY SWITCH * Not available in switch construction. * 2 BIT MODELS ONLY DETENT 1 – NONE * 2 – 16 DETENTS SHAFT TRIM R – ROUND F – F x 4.5mm (For metric size) .375 x .156" (For inch size) K – 18 TEETH (For metric size) 24 TEETH (For inch size) "A" BUSHING LENGTH mm A=5.0mm B=6.35mm C=7.0mm D=9.53mm ALL M8X.75P inch 2=.250" 3=.375" 8=1.000" ALL 3/8-32 UNEF-2A ENCODER CODE 1 – 2 BIT BINARY * 2 – 4 BIT GRAY * 3 – 4 BIT HEXIDECIMAL * 16-16 COM (4 PULSES) ONLY * 16-16 COM (4 PULSES) ONLY S – SD SLOT COMBINATION "L" SHAFT LENGTH mm A0=10mm A5=15mm B0=20mm B5=25mm C0=30mm C5=35mm ALL 6.0mm Dia. inch 20=.625" 24=.750" 28=.875" 32=1.000" 16-16 COM (4 PULSES) 24-24 COM (6 PULSES) 32-32 COM (8 PULSES) 40-40 COM (10 PULSES) 48-48 COM (12 PULSES) ALL .250" Dia. METRIC BUSHING EQUIPPED WITH METRIC SHAFT. 4-4 CTS Electronic Components © 2006 CTS Corporation. All rights reserved. Information subject to change. 10/05/06 www.ctscorp.com