Optical and Mechanical Encoders Mechanical Encoders SERIES 51 Binary or Binary Complement Code FEATURES PC Mount, 30 Angle of Throw 2 to 12 Positions .562 Diameter, 200 mA Shaft and Panel Seal Adjustable Stop Versions DIMENSIONS In Inches (and millimeters) .250 .015 (6,35 0,38) .537 + .020 .030 (13,64 + 0,51 0,76) .125 + .015 .020 (3,18 + 0,38 .375 .015 .232 (5,89) 0,51) .093 .005 (9,53 0,38) COMMON CIRCLE COMMON (2,36 0,13) .035 (0,89) OF CENTERS POLE 1 .250 + .020 .015 105 REF. (6,35 + 0,51 0,38) COMMON POLE 2 C L COMMON .125 .002 SHAFT POLE 3 (3,18 0,05) FLAT .203 .003 (5,16 0,08) 1/4-28 UNF-2A .382 (9,70) TERMINAL THREAD CIRCLE OF CENTERS .562 + .025 .015 PC TERMINAL DETAIL PC COMMON DETAIL (14,27 + 0,64 0,38) .020 .003 .125 .015 .125 .015 (0,51 0,08) (3,18 0,38) (3,18 0,38) See circuit diagrams for omitted terminals020 .003 .062 .004 .025 .002 (0,51 0,08) (1,57 0,10) (0,64 0,05) All switches are provided with PC mount terminals. Grayhill part number and date code marked on label. Customer part number marked on request. CIRCUIT DIAGRAMS Switch is viewed from the shaft end and shown Indicates Terminal is present. generate code output. in switch position number 1, which is decimal Indicates Terminal is omitted. Switch position numbers do not correspond to the number zero and BCD number zero. Note: Connections must be made on PC board to decimal input or binary output. See Truth Tables. BCD BCD Complement TIED TOGETHER TIED TOGETHER ON PC BOARD ON PC BOARD 1 OUTPUT 1 OUTPUT 4 OUTPUT 4 OUTPUT 4 4 3 3 TIED TOGETHER 2 OUTPUT TIED TOGETHER ON PC BOARD 2 C1 5 C1 5 ON PC BOARD 2 TIED TOGETHER ON PC BOARD 1 1 6 6 ROTATING ROTATING C2 C2 8 OUTPUT 8 OUTPUT CONTACTS CONTACTS 7 12 7 12 2 OUTPUT 11 11 8 8 C3 C3 TIED TOGETHER 10 9 ON PC BOARD 9 10 TIED TOGETHER COMMON COMMON ON PC BOARD Encoder Grayhill, Inc. 561 Hillgrove Avenue LaGrange, Illinois 60525-5997 USA Phone: 708-354-1040 Fax: 708-354-2820 www.grayhill.com 7 GRAYHILL 87 65Optical and Mechanical Encoders Mechanical Encoders TRUTH TABLES OPTIONS Binary Code Decimal Binary Code Decimal Complement Adjustable Stops Set and reset stops to limit rotation. All Dec. Switch 2nd Output Terminal Dec. Switch 2nd Output Terminal dimensions are the same as for fixed stop No. Pos n.* Pin** 1248 No. Pos n.* Pin** 1248 switches. Switches are shipped with the stop 0 1 4-5 0 1 12-1 blades located to limit rotation to 11 switch 1 2 5-6 1 2 1-2 positions. For continuous rotation, remove both 2 3 6-7 2 3 2-3 blades. For limited rotation, remove the 2nd 3 4 7-8 3 4 3-4 (clockwise) blade and move it to the hole 4 5 8-9 4 5 4-5 located between the positions shown in the 5 6 9-10 5 6 5-6 Truth Tables. Removal of a plastic washer 6 7 10-11 6 7 6-7 provides access to the blades and slots. 7 8 11-12 7 8 7-8 Adjustable stop versions are available in 8 9 12-1 8 9 8-9 unsealed styles only. 9 10 1-2 9 10 9-10 10 11 2-3 10 11 10-11 11 12 3-4 11 12 11-12 Shaft and Panel Seal Switches are available in sealed or unsealed Indicates contact made to common styles. For sealed style, the panel is sealed by * The switch position number is the terminal location opposite the shaft flat it is not the same as an o-ring at the base of the bushing. The shaft the decimal number. is sealed by an o-ring inside of bushing. After ** To limit an adjustable stop switch to the decimal number shown, insert the second pin in the hole the switch is mounted, seals do not alter the lying between the 2 switch positions indicated. dimensions of the unsealed style. SPECIFICATIONS Electrical Rating Materials and Finishes Additional Characteristics Rated: To make and break 125 mA 30 Vdc Bases: Thermoset plastic Contact Type: Wiping contacts resistive load for 25,000 cycles of operation. Detent Rotor: Nylon Shaft Flat Orientation: Switch position is Cycle: (1 cycle = 360 rotation and return) Shaft, Stop Blades, Stop Arm, Thrust defined as that position that is opposite the Washer And Retaining Ring: Stainless steel Test conditions are standard atmospheric shaft flat. The location of the contacts in pressure, 25C and 68% relative humidity. Detent Balls: Steel, nickel-plated relation to the shaft flat is shown on the circuit Contact Resistance: 20 milliohms initially, Bushing: Zinc, Tin-zinc-plated diagram. 300 milliohms maximum after life Detent Spring: Stainless steel Terminals: Only the active position terminals, Insulation Resistance: 50,000 megohms Common Terminals and Rings: Brass, gold as shown in the circuit diagram are supplied plate .00003 minimum over silver plate .0003 initially, 10,000 megohms after life with the switch. All common terminals are Voltage Breakdown: 500 Vac between minimum supplied. mutually insulated parts Terminals: Brass with silver contact surface, Stop Strength: 7.5 in-lbs minimum gold-plated .00003 Rotational Torque: 8 to16 in-oz Rotor Contact: Berillium copper with silver Bushing Mounting: Required for these contact surface switches Shaft And Panel Seal: Silicone rubber Maximum Mounting Torque: 15 in-lbs. Mounting Hardware: One mounting nut, .089 thick by .375 across flats, and one internal tooth lockwasher are supplied with the switch. ORDERING INFORMATION Type Of Maximum No. BCD Output BCD Complement Switch Of Positions Unsealed Sealed Unsealed Sealed 7 513360-7 513374-7 513361-7 513375-7 8 513360-8 513374-8 513361-8 513375-8 Fixed Stop 9 513360-9 513374-9 513361-9 513375-9 10 513360-10 513374-10 513361-10 513375-10 11 513360-11 513374-11 513361-11 513375-11 12 513360-12-F 513374-12-F 513361-12-F 513375-12-F Continuous Rotation 12 513360-12-C 513374-12-C 513361-12-C 513375-12-C Adjustable Stop 12 513385 513384 The -C suffix indicates continuous rotation. The -F suffix indicates a fixed stop between positions 1 and 12. Available from your local Grayhill Distributor. For prices and discounts, contact a local Sales Office, an authorized local Distributor or Grayhill. Encoder 8 Grayhill, Inc. 561 Hillgrove Avenue LaGrange, Illinois 60525-5997 USA Phone: 708-354-1040 Fax: 708-354-2820 www.grayhill.com