Optical and Mechanical Encoders Mechanical Encoders SerieS 25L Hex, Gray and Quadrature Code FeatureS • Price Competitive to Similar Designs • Quality Construction and Contact Materials • Multiple Code and Indexing Choices • 100,000 Life Cycles • Less than 1.0" Square • Manufactured to ISO 9001 Standards DimenSionS in inches (and millimeters) .925 ± .010 Ø .470 ± .010 (23,50 ± 0,25) (11,94 ± 0,25) .343 ± .025 .250 ± .015 NON-TURN C (8,71 ± 0,64) L (6,35 ± 0,38) .865 ± .015 .320 ± .010 TAB (21,97 ± 0,38) .045 ± .005 (8,13 ± 0,25) 3/8-32 UNEF-2A (1,14 ± 0,13) .400 ± .015 THREAD (10,16 ± 0,38) .025 ± .002 .250 + .001 –.002 (0,64 ± 0,05) (6,35 + 0,03 –0,05) SQUARE PIN DIA. (3 PLACES) .865 ± 1.020 ± .015 C C L L .010 (21,97 ± BUSHING (25,91 ± 0,38) .500 ± .010 FLATS 0,25) .250 ± .015 .219 ± .004 (12,7 ± 0,25) (6,35 ± 0,38) (5,56 ± 0,10) C L .500 ± .015 90˚ (12,7 ± 0,38) .100 ± .005 NON-TURN TAB .590 ± .010 .250 ± .010 (2,54 ± 0,13) Ø .120 ± .005 (3,05 ± 0,13) WIDE (14,97 ± 0,25) (6,35 ± 0,25) TYP. BY .068 ± .005 (1,73 ± 0,13) THICK C SHAFT MOUNTING L LOCK TAB (2) FOR FLAT BRACKET MOUNTING BRACKET 25J5155 trutH tabLeS Clockwise rotation Clockwise rotation Clockwise rotation Quadrature 2-Bit Code 4-Bit Gray Code-16 Position 4-Bit Binary Code Hexadecimal-16 Position 1/4 Cycle per Detent Switch Code output Switch Code output Switch output position position 1 2 4 8 position position 1 2 4 8 position "a" "b" 1 0 1 0 1 2 1 2 1 2 3 2 3 2 3 4 3 4 3 4 5 4 5 4 5 6 5 6 5 6 7 6 7 6 7 8 7 8 7 8 9 8 9 8 9 10 9 10 9 10 11 10 11 10 11 12 11 12 11 12 13 12 13 12 13 14 13 14 13 14 15 14 15 14 15 16 15 16 15 16 17 Indicates closed circuit; blank indicates Indicates closed circuit; blank indicates 18 19 open circuit. open circuit. 20 21 22 23 Quadrature 2-bit Code 24 25 Output Table for CW Rotation 26 27 28 29 HIGH 30 OUTPUT 31 A LOW 32 33 34 HIGH OUTPUT 35 B 36 LOW Indicates closed circuit; 1 2 3 4 5 6 blank indicates open POSITION NUMBER circuit. Code repeats every 4 positions. Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com Optical and Mechanical Encoders Mechanical Encoders SpeCiFiCationS electrical ratings Switching Loads: 1.5 mA at 115 Vac, resistive; 150 mA at 14 Vdc, resistive Current Carrying Capacity: 250 mA maximum at 28 Vdc, resistive load Contact resistance: 75 mΩ, typical insulation resistance: 1000 mΩ minimum between terminals Voltage breakdown: 1000 Vac minimum between terminals Life expectancy: 100,000 cycles of operation at rated loads. One cycle of operation is a rotation through all of the active positions and a return to the starting position. mechanical ratings rotational torque: 2 to 6 in-oz operating temperature range: -40 C° to +85 C° Storage temperature range: -65 C° to +85 C° Continuous rotation: All standard switches are continuous rotation. Desired stop locations supplied upon request. anti-rotation Device: Integral non-turn tab, flatted bushing, .375" diameter, .320 double “D” across flats. termination: Standard is PC style, parallel to shaft, facing rear. Options include PC, parallel to shaft, facing front. panel mounting torque: 10 in-lbs maximum materials and Finishes bushing/Housing and Shaft/rotor: Reinforced thermoplastic Detent ball: Stainless steel, nickel-plated Detent Spring: Tinned music wire Contacts: Beryllium copper, gold plate over nickel terminals: Copper alloy, #725, 100% tin plate over nickel plate output board: FR-4, copper/nickel-plated mounting nut: Brass, tin/zinc-plated hex nut mounting bracket: Stainless Steel, tin-plated orDerinG inFormation Series: 25L = Economical, single deck encoder Housing Color: B = Black housing; R = Red housing angle of throw: 10 = 10°, 36 positions; 11 = 11.25°, 32 positions; 15 = 15°, 24 positions; 18 = 18°, 20 positions; 22 = 22.5°, 16 positions; 30 = 30°, 12 positions; 45 = 45°, 8 positions 25Lb10-Q-Z mounting bracket: Z = with bracket, Blank = no bracket Code output: H = Hexadecimal available only in 22.5° G = Gray available only in 22.5° Q = Quadrature (2-bit) Custom materials, styles, color and markings are available. Custom knobs available. available from your local Grayhill Distributor. For prices and discounts, contact a local Sales Office, an authorized Distributor or Grayhill. For Custom codes. termination, torque, angles of throw, call Grayhill for more information. Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com