*R oH S CO M PL IA NT Features ■ 3.3 and 5 VDC voltage supply option ■ Resolution: 1024 states ■ PWM Absolute Position ■ Long life ■ Bushing or servo mount ■ High operating speed ■ Non-contacting magnetic technology ■ Highly repeatable ■ Small size ■ Sealed option ■ CMOS and TTL compatible ■ Magnetic technology EMS22P - Non-Contacting PWM Encoder Electrical Characteristics Resolution ................................................................................................................................................................................................................ 1024 states Insulation Resistance (500 VDC) ......................................................................................................................................................................1,000 megohms Electrical Travel ........................................................................................................................................................................................................ Continuous Supply Voltage ........................................................................................................................................................................5.0 VDC ±10 %, 3.3 VDC ±10 % Supply Current .................................................................................................................................................................................................20 mA maximum Output Voltage Low Output Level ................................................................................................................................................................................. Vss+0.4 V maximum High Output Level................................................................................................................................................................................... Vdd-0.5 V minimum Output Current With 4.5 VDC Supply Voltage .......................................................................................................................................................................4 mA maximum With 3.0 VDC Supply Voltage .......................................................................................................................................................................2 mA maximum Rise/Fall Time (Incremental Output) ............................................................................................................................................................... 500 ns maximum Shaft RPM (Ball Bearing) .........................................................................................................................................................................10,000 rpm maximum Linearity ..............................................................................................................................................................................................................................0.5 % Accuracy Nominal ..........................................................................................................................................................................................................±0.7 ° or better Worst Case................................................................................................................................................................................................................... ±1.4 ° Output Transition Noise................................................................................................................................................................................... 0.12 ° RMS max. Environmental Characteristics Operating Temperature Range........................................................................................................................................ -40 ºC to +125 ºC (-40 °F to +257 °F) Storage Temperature Range ........................................................................................................................................... -55 °C to +125 °C (-67 °F to +257 °F) Humidity ....................................................................................................................................................................MIL-STD-202, Method 103B, Condition B Vibration .............................................................................................................................................................................................................................. 15 G Shock .................................................................................................................................................................................................................................. 50 G Rotational Life S Bushing (@1,000 rpm)................................................................................................................................................................. 100,000,000 revolutions T & W Bushings (@1,000 rpm with 250 g side load) ........................................................................................................................ 50,000,000 revolutions IP Rating ............................................................................................................................................................................................................................. IP 65 Mechanical Characteristics Mechanical Angle ............................................................................................................................................................................................ 360 ° Continuous Torque Starting .................................................................................................................................................................................... 43 ±21 g-cm (0.6 ±0.3 oz-in.) Running ................................................................................................................................................................................... 29 ±14 g-cm (0.4 ±0.2 oz-in.) Mounting Torque.........................................................................................................................................................................................203 N-cm (18 lb.-in.) Shaft End Play......................................................................................................................................................................0.30 mm (0.012 ”) T.I.R. maximum Shaft Radial Play ..................................................................................................................................................................0.12 mm (0.005 ”) T.I.R. maximum Weight ..............................................................................................................................................................................................................11 gms. (0.4 oz.) Terminals ......................................................................................................................................................................................... Axial, radial or ribbon cable Soldering Condition Manual Soldering .................................................................................................................... 96.5Sn/3.0Ag/0.5Cu solid wire or no-clean rosin cored wire 370 °C (700 °F) max. for 3 seconds Wave Soldering ............................................................................................................................................. 96.5Sn/3.0Ag/0.5Cu solder with no-clean flux 260 °C (500 °F) max. for 10 seconds Wash processes ....................................................................................................................................................................................... Not recommended Marking.................................................................................................................................... Manufacturer’s trademark, name, part number, and date code. Hardware ....................................................................One lockwasher and one mounting nut supplied with each encoder, except on servo mount versions. Pin Configuration Output Type PWM Pin 1 PWM Signal Pin 2 GND Pin 3 GND Pin 4 GND Pin 5 VCC* * Can be 5 or 3.3 VDC depending on the version. ** Active low chip select pin; if not used connect pin 6 to GND. *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. Pin 6 CS** Applications ■ Material handling equipment ■ Medical ■ Brushless DC motor commutation ■ Office equipment ■ Robotics ■ Audio and broadcast equipment ■ Automotive ■ Industrial automation ■ Petroleum refinery EMS22P - Non-Contacting PWM Encoder Output Type Waveform and Variant Table Angle PW MIN PWM Output Parameter 0 deg (Pos 0) Symbol Type Unit Note PWM frequency fPWM 0.9756 KHz MIN pulse with PWMIN 1 μs Position 0 Angle 0 ° MAX pulse with PWMAX 1024 μs Position 1023 Angle 359.65 ° Signal period: 1025 μs 1 1025 PW MAX Analog output using an external low pass filter Vcc t on 0 t off 512 1025 359.65 deg (Pos 1023) 0V 0° 360 ° 1/f PWM Position = t on * 1025/(t on + t off) - 1 Recommended Filter R1 R2 analog out PWM C1 C2 VSS Simple Passive 2nd Order Low Pass Filter R1, R2 ≥ 4.7K Ohms C1, C2 ≥ 1 μF / 6 V R1 should be ≥ 4.7K ohms to avoid loading of the PWM output. Larger values of Rx and Cx will provide better filtering and less ripple, but will also slow down the response time. Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. Consult factory for options not shown, including: • Wire lead or cable options • Special shaft/bushing sizes and features • Connectors • Special performance characteristics • Non-standard resolutions • PCB mounting bracket EMS22P - Non-Contacting PWM Encoder Dimensional Drawings Shaft Style D (Bushing T) 13.89 ± .38 (.547 ± .015) 15.88 ± .25 (.625 ± .010) 1.57 ± 0.12 (.062 ± .005) DIA. 3.17 +.00/-.01 (.1247 +.0000/-.0003) 10.29 ± 0.12 (.405 ± .005) DIA. 21.21 ± .25 (.835 ± .010) 2.79 (.110) .51 ± .03 (.020 ± .001) 6 PLCS. 2.01 (.079) 5 PLCS. .51 ± .03 (.020 ± .001) 6 PLCS. 9.53 (.375) 20.88 ± .25 (.822 ± .010) 4.00 (.157) Shaft Style B (Bushing S) 13.89 ± .38 (.547 ± .015) 15.88 ± .25 (.625 ± .010) 1.57 ± 0.12 (.062 ± .005) DIA. 6.34 (0.249) 10.29 (.405) DIA. 21.21 ± .25 (.835 ± .010) 2.79 (.110) .51 ± .03 (.020 ± .001) 6 PLCS. 2.01 (.079) 5 PLCS. .51 ± .03 (.020 ± .001) 6 PLCS. 9.53 (.375) 20.88 ± .25 (.822 ± .010) 4.00 (.157) DIMENSIONS: 9.53 (.375) 13.89 ± .38 (.547 ± .015) Shaft Style D (Bushing W) 1.57 (.062) 15.88 ± .25 (.625 ± .010) DIA. 3.17 +.00/-.01 (.1247 +.0000/-.0003) 22.23 (.875) DIA. 21.21 ± .25 (.835 ± .010) 2.74 (.108) 19.05 (.75) DIA. .51 ± .03 (.020 ± .001) 6 PLCS. 2.01 (.079) 5 PLCS. .51 ± .03 (.020 ± .001) 6 PLCS. 4.00 (.157) Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. 1.57 (.062) 1.57 (.062) 22.23 ± .25 (.875 ± .010) MM (INCHES) EMS22P - Non-Contacting PWM Encoder Product Dimensions Cable Assembly CONNECTOR 2.00 MM PITCH, 6 CIRCUITS 2 PLCS. 254.0 ± 6.35 (10.00 ± 0.25) 13.97 (0.55) 2 PLCS. CIRCUIT #1 25.4 (1.0) MAX. 2 PLCS. FLAT CABLE 2.0 MM PITCH ROUND CONDUCTOR 24 AWG (7X32) STRANDED, TOP COAT 6 CIRCUITS, P.V.C. INSULATION PIN 1 IDENTIFICATION STRIPE DIMENSIONS: CIRCUIT #1 MM (INCHES) How To Order BOURNS EMS22 22 MM NON-CONTACTING PWM ENCODER E M S 2 2 P 5 0 - B 2 8 - L S 6 INDEX CHANNEL Code Description 0 No Index VOLTAGE SUPPLY Code Description 3.3 VDC 3 5 VDC 5 SHAFT LENGTH DESIGNATOR* Code Description 1/2 " Long 16 5/8 " Long 20 7/8 " Long 28 25 mm Long 25 (Available with D Bushing Only) SHAFT STYLE Code B C D R M Available With Description Bushings (Code) 1/4 " Dia., Plain End S 1/4 " Dia., Flatted End S 1/8 " Dia., Plain End T, W 6 mm Dia., Slotted End D 6 mm Dia., Flatted End D OUTPUT TYPE Code Description Notes See Note 1 CW PWM P See Note 2 CCW PWM R TERMINAL CONFIGURATION** Code Description L Axial, MultiPurpose Pin Rear Ribbons M Cable with Connector Rear Ribbons W Cable No Connector RESOLUTION Code States 6 1024 BUSHING DESIGNATOR Code Description S 3/8 " D X 3/8 " L Threaded (Single Ball Bearing) T 3/8 " D X 3/8 " L Threaded (Dual Ball Bearing) Servo Mount 7/8 " D W (Dual Ball Bearing) 9 mm D X 7.94 mm L Threaded D (Single Ball Bearing) * Shaft length measured from mounting surface. ** Standard ribbon cable is 10 inches long. Consult factory for other lengths. Note 1: (P) t on increases from 1 to 1025 with CW rotation of the shaft. Note 2: (R) t on increases from 1 to 1025 with CCW rotation of the shaft. REV. 07/12 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.