grayhill, inc. ? 561 hillgrove avenue ? lagrange, illinois 60525-5997 ? usa ? phone: 708-354-1040 ? fax: 708-354-2820 ? www.gr ayhill.com 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 dimensions in inches (and millimeters) 1.020 ? .010 (25,91 ? 0,25) .590 ?.010 (14,97 ?0,25) .865 ? .015 (21,97 ? 0,38) .865 ?.015 (21,97 ?0,38) .925 ?.010 (23,50 ?0,25) c l c l .100 ?.005 (2,54 ?0,13) typ. 90? bushing flats shaft flat .219 ?.004 (5,56 ?0,10) .470 ?.010 (11,94 ?0,25) .320 ?.010 (8,13 ?0,25) .400 ?.015 (10,16 ?0,38) c l non-turn tab 3/8-32 unef-2a thread .250 + .001 ?002 (6,35 + 0,03 ?,05) dia. .250 ?.015 (6,35 ?0,38) .500 ?.015 (12,7 ?0,38) non-turn tab .120 ?.005 (3,05 ?0,13) wide by .068 ?.005 (1,73 ?0,13) thick .250 ?.015 (6,35 ?0,38) .343 ?.025 (8,71 ?0,64) .045 ?.005 (1,14 ?0,13) .250 ?.010 (6,35 ?0,25) c l c l .500 ?.010 (12,7 ?0,25) .025 ?.002 (0,64 ?0,05) square pin (3 places) lock tab (2) for mounting bracket 25j5155 mounting bracket indicates closed circuit; blank indicates open circuit. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 8 4 2 1 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 clockwise rotation code position 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 8 4 2 1 output 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 switch position clockwise rotation 4-bit binary code hexadecimal-16 position 4-bit gray code-16 position indicates closed circuit; blank indicates open circuit. code repeats every 4 positions. quadrature 2-bit code 1/4 cycle per detent 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 "b" "a" output 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 switch position clockwise rotation switch position code position output indicates closed circuit; blank indicates open circuit. 100,000 life cycles less than 1.0" square manufactured to iso 9001 standards truth tables encoder 4
optical and mechanical encoders grayhill, inc. ? 561 hillgrove avenue ? lagrange, illinois 60525-5997 ? usa ? phone: 708-354-1040 ? fax: 708-354-2820 ? www.gr ayhill.com 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 m ? , typical insulation resistance: 1000 m ? 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 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) ordering information available from your local grayhill distributor. for prices and discounts, contact a local sales office, an authorized local distributor or grayhill. for custom codes. termination, tirque, angles of throw, call grayhill for more information. custom materials, styles, color and markings are available. custom knobs available, see page i-57. encoder 5
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