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 0,51) .375–.015 (9,53–0,38) .125–.002 (3,18–0,05) .203–.003 (5,16–0,08) COMMON POLE2 COMMON POLE3 1/4-28UNF-2A THREAD .562+.025 .015 (14,27+0,64 0,38) pC TerMinAl DeTAil .125–.015 (3,18–0,38) COMMON POLE1 .382(9,70)TERMINAL CIRCLEOFCENTERS pC CoMMon DeTAil .020–.003 (0,51–0,08) .125–.015 (3,18–0,38) .062–.004 (1,57–0,10) .020–.003 (0,51–0,08) .025–.002 (0,64–0,05) See circuit diagrams for omitted terminals. AllswitchesareprovidedwithPCmountterminals. 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 in switch position number 1, which is decimal number zero and BCD number zero. Indicates Terminal is present. Indicates Terminal is omitted. Note: Connections must be made on PC board to generate code output. Switch position numbers do not correspond to the decimal input or binary output. See Truth Tables. BCD BCD Complement TIED TOGETHER ON PC BOARD 1 OUTPUT 4 OUTPUT 3 4 2 C1 ROTATING CONTACTS TIED TOGETHER ON PC BOARD 5 1 TIED TOGETHER ON PC BOARD 6 C2 8 OUTPUT 11 C3 10 COMMON TIED TOGETHER ON PC BOARD ROTATING CONTACTS 3 2 C1 5 1 11 8 8 OUTPUT 7 2 OUTPUT 8 C3 10 TIED TOGETHER ON PC BOARD TIED TOGETHER ON PC BOARD 6 C2 9 Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 4 12 7 12 1 OUTPUT 4 OUTPUT 2 OUTPUT 9 TIED TOGETHER ON PC BOARD COMMON 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com Optical and Mechanical Encoders CL SHAFT FLAT 6 5 .250+.020 .015 (6,35+0,51 0,38) .232(5,89) COMMONCIRCLE OFCENTERS 8 7 105¡ .035(0,89) REF. GRAYHILL .093–.005 (2,36–0,13) Mechanical Encoders Truth tables Binary Code Decimal Binary Code Decimal Complement Dec. Switch 2ndOutput Terminal No.Pos'n.*Pin** 1 2 4 8 Dec. Switch 2ndOutput Terminal No.Pos'n.*Pin** 1 2 4 8 0 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 12 4-5 5-6 6-7 7-8 8-9 9-10 10-11 11-12 12-1 1-2 2-3 3-4 0 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 12 12-1 1-2 2-3 3-4 4-5 5-6 6-7 7-8 8-9 9-10 10-11 11-12 Options Adjustable Stops Set and reset stops to limit rotation. All dimensions are the same as for fixed stop switches. Switches are shipped with the stop blades located to limit rotation to 11 switch positions. For continuous rotation, remove both blades. For limited rotation, remove the 2nd (clockwise) blade and move it to the hole located between the positions shown in the Truth Tables. Removal of a plastic washer provides access to the blades and slots. Adjustable stop versions are available in unsealed styles only. Shaft and Panel Seal Switches are available in sealed or unsealed styles. For sealed style, the panel is sealed by an o-ring at the base of the bushing. The shaft is sealed by an o-ring inside of bushing. After the switch is mounted, seals do not alter the dimensions of the unsealed style. Indicates contact made to common * The switch position number is the terminal location opposite the shaft flat; it is not the same as the decimal number. ** To limit an adjustable stop switch to the decimal number shown, insert the second pin in the hole lying between the 2 switch positions indicated. Specifications Optical and Mechanical Encoders Electrical Rating Rated: To make and break 125 mA 30 Vdc resistive load for 25,000 cycles of operation. Cycle: (1 cycle = 360° rotation and return) Test conditions are standard atmospheric pressure, 25°C and 68% relative humidity. Contact Resistance: 20 milliohms initially, 300 milliohms maximum after life Insulation Resistance: 50,000 megohms initially, 10,000 megohms after life Voltage Breakdown: 500 Vac between mutually insulated parts Materials and Finishes Bases: Thermoset plastic Detent Rotor: Nylon Shaft, Stop Blades, Stop Arm, Thrust Washer And Retaining Ring: Stainless steel Detent Balls: Steel, nickel-plated Bushing: Zinc, Tin-zinc-plated Detent Spring: Stainless steel Common Terminals and Rings: Brass, gold plate .00003" minimum over silver plate .0003" minimum Terminals: Brass with silver contact surface, gold-plated .00003" Rotor Contact: Berillium copper with silver contact surface Shaft And Panel Seal: Silicone rubber Mounting Hardware: One mounting nut, .089" thick by .375" across flats, and one internal tooth lockwasher are supplied with the switch. Additional Characteristics Contact Type: Wiping contacts Shaft Flat Orientation: Switch position is defined as that position that is opposite the shaft flat.The location of the contacts in relation to the shaft flat is shown on the circuit diagram. Terminals: Only the active position terminals, as shown in the circuit diagram are supplied with the switch. All common terminals are supplied. Stop Strength: 7.5 in-lbs minimum Rotational Torque: 8 to16 in-oz Bushing Mounting: Required for these switches Maximum Mounting Torque: 15 in-lbs. Ordering Information Type Of Maximum No. SwitchOf Positions Unsealed BCD Output Sealed BCD Complement Unsealed Sealed Fixed Stop 7 8 9 10 11 12 513360-7 513360-8 513360-9 513360-10 513360-11 513360-12-F 513374-7 513374-8 513374-9 513374-10 513374-11 513374-12-F 513361-7 513361-8 513361-9 513361-10 513361-11 513361-12-F 513375-7 513375-8 513375-9 513375-10 513375-11 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. For prices and discounts, contact a local Sales Office, an authorized local Distributor or Grayhill. Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com