HEDS-9041-J00

HEDS-9040/9140 Three Channel Optical Incremental Encoder Modules Data Sheet Description Features The HEDS-9040 and HEDS-9140 series are three channel optical incremental encoder modules. When used with a codewheel, these low cost modules detect rotary position. Each module consists of a lensed LED source and a detector IC enclosed in a small plastic package. Due to a highly collimated light source and a unique photodetector array, these modules provide the same high performance found in the HEDS-9000/9100 two channel encoder family. • Two channel quadrature output with index pulse • Resolution up to 2000 CPR (Counts Per Revolution) • Low cost • Easy to mount • No signal adjustment required • Small size • -40°C to 100°C operating temperature • TTL compatible • Single 5 V supply Package Dimensions HEDx-9xx0 Option 1.0 (0.04) 5.1 (0.20) HEDS-9X00 8.64 (0.340) REF. 20.8 (0.82) 2.44/2.41 X 2.79 (0.096/0.095 X 0.110) 2.16 (0.085) DEEP 17.27 (0.680) 20.96 (0.825) OPTICAL CENTER LINE 1.78 ± 0.10* (0.070 ± 0.004) 2.9 (0.11) 2.54 (0.100) 11.7 (0.46) 2.67 (0.105) DIA. MOUNTING THRU HOLE 2 PLACES CL 1.85 (0.073) 2.21 (0.087) YYXX X00 1.02 ± 0.10 (0.040 ± 0.004) ALIGNING RECESS 2.44/2.41 DIA. (0.096/0.095) 2.16 (0.085) DEEP 5.46 ± 0.10 (0.215 ± 0.004) 2.92 ± 0.10** (0.115 ± 0.004) 6.9 (0.27) 11.9 (0.47) 4.75 ± 0.10 (0.187 ± 0.004) 45° ALIGNING RECESS 2.44/2.41 X 2.79 (0.096/0.095 X 0.110) 2.16 (0.085) DEEP 8.81 (0.347) 4.11 (0.162) 6.35 (0.250) REF. TYPICAL DIMENSIONS IN MILLIMETERS AND (INCHES) SIDE A 5.8 (0.23) ALIGNING RECESS 2.44/2.41 DIA. (0.096/0.095) 2.16 (0.085) DEEP OPTICAL CENTER 10.16 (0.400) OPTICAL CENTER GND 1.8 (0.07) 1.52 (0.060) DATE CODE 3.73 ± 0.05 (0.147 ± 0.002) V CC 2.54 (0.100) TYP. OPTION CODE CH. B V CC CH. A N.C. GND 8.6 (0.34) 5 4 3 2 1 0.63 (0.025) SQR. TYP. 26.67 (1.05) 15.2 (0.60) SIDE B * GAP MEASUREMENT TO THE SURFACE WINDOW = 1.68 ± 0.10 (0.066 ± 0.004) ** HEIGHT TO THE WINDOW = 3.02 ± 0.10 (0.119 ± 0.004) HEDx-9xx1 Option OPTION CODE DATE CODE 3.73 ± 0.05 (0.147 ± 0.002) HEDS-9X01 YYXX X00 1.02 ± 0.10 (0.040 ± 0.004) 1.85 (0.073) 8.64 (0.340) REF. CL 17.27 (0.680) 20.96 (0.825) SIDE A 2.67 (0.105) DIA. MOUNTING THRU HOLE 2 PLACES 2.44/2.41 X 2.79 (0.096/0.095 X 0.110) 2.16 (0.085) DEEP OPTICAL CENTER 2.21 (0.087) 16.76 ± 0.20 (0.66 ± 0.008) 2.54 (0.100) 11.7 (0.46) OPTICAL CENTER LINE 1.78 ± 0.10* (0.070 ± 0.004) 5.46 ± 0.10 (0.215 ± 0.004) 2.92 ± 0.10** (0.115 ± 0.004) GND 1.8 (0.07) 1.0 (0.04) 5.1 (0.20) ALIGNING RECESS 2.44/2.41 DIA. (0.096/0.095) 2.16 (0.085) DEEP 4.01 ± 0.20 (0.158 ± 0.008) CH. B V CC CH. A N.C. GND 2.54 (0.100) TYP. V CC 8.6 (0.34) 5 4 3 2 1 0.63 (0.025) SQR. TYP. 26.67 (1.05) 15.2 (0.60) 2.9 (0.11) 4.75 ± 0.10 (0.187 ± 0.004) 45° ALIGNING RECESS 2.44/2.41 X 2.79 (0.096/0.095 X 0.110) 2.16 (0.085) DEEP 10.16 (0.400) TYPICAL DIMENSIONS IN MILLIMETERS AND (INCHES) 5.8 (0.23) 8.81 (0.347) ALIGNING RECESS 2.44/2.41 DIA. (0.096/0.095) 2.16 (0.085) DEEP OPTICAL CENTER 4.11 (0.162) 6.35 (0.250) REF. SIDE B * GAP MEASUREMENT TO THE SURFACE WINDOW = 1.68 ± 0.10 (0.066 ± 0.004) ** HEIGHT TO THE WINDOW = 3.02 ± 0.10 (0.119 ± 0.004) ESD WARNING: NORMAL HANDLING PRECAUTIONS SHOULD BE TAKEN TO AVOID STATIC DISCHARGE. The HEDS-9040 and 9140 have two channel quadrature outputs plus a third channel index output. This index output is a 90 electrical degree high true index pulse which is generated once for each full rotation of the codewheel. The HEDS-9040 is designed for use with a HEDX-614X code­wheel which has an optical radius of 23.36 mm (0.920 inch). The HEDS-9140 is designed for use with a HEDx-5x4x code­wheel which has an optical radius of 11.00 mm (0.433 inch). The quadrature signals and the index pulse are accessed through five 0.025 inch square pins located on 0.1 inch centers. Standard resolutions between 256 and 2000 counts per revolu­tion are available. Consult local Avago sales repre­ sentatives for other resolutions. Applications The HEDS-9040 and 9140 provide sophisticated motion control detection at a low cost, making them ideal for high volume applications. Typical applica­tions include printers, plotters, tape drives, and industrial and factory automation equipment. Note: Avago Technologies encoders are not recommended for use in safety critical applications. Eg. ABS braking systems, power steering, life support systems and critical care medical equipment. Please contact sales representative if more clarification is needed. 2 Theory of Operation The HEDS-9040 and 9140 are emitter/detector modules. Coupled with a codewheel, these modules translate the rotary motion of a shaft into a three-channel digital output. As seen in the block diagram, the modules contain a single Light Emitting Diode (LED) as its light source. The light is collimated into a parallel beam by means of a single poly­car­bon­ate lens located directly over the LED. Opposite the emitter is the integrated detector circuit. This IC consists of multiple sets of photodetec­tors and the signal processing circuitry necessary to produce the digital waveforms. The codewheel rotates between the emitter and detector, causing the light beam to be interrupted by the pattern of spaces and bars on the code­wheel. The photo­diodes which detect these interrup­tions are arranged in a pattern that corresponds to the radius and design of the code­wheel. These detectors are also spaced such that a light period on one pair of detectors corresponds to a dark period on the adjacent pair of detectors. The photo­ diode outputs are then fed through the signal processing circuitry resulting in A, A, B, B, I and I. Comparators receive these signals and produce the final outputs for channels A and B. Due to this integrated phasing technique, the digital output of channel A is in quadrature with that of channel B (90 degrees out of phase). The output of the comparator for I and I is sent to the index processing circuitry along with the outputs of channels A and B. The final output of channel I is an index pulse PO which is generated once for each full rotation of the codewheel. This output PO is a one state width (nominally 90 electrical degrees), high true index pulse which is coincident with the low states of channels A and B. Block Diagram RESISTOR VCC 4 PHOTO DIODES COMPARATORS LENS A A B LED B I I + CH. A − 3 + CH. B − 5 + CH. I − INDEXPROCESSING CIRCUITRY SIGNAL PROCESSING CIRCUITRY 2 GND 1 CODE WHEEL EMITTER SECTION DETECTOR SECTION Output Waveforms C P 2.4 V 0.4 V AMPLITUDE φ S1 S2 S3 S4 2.4 V 0.4 V t2 t1 2.4 V 0.4 V P0 ROTATION 3 CH. A CH. B CH. I Definitions Count (N): The number of bar and window pairs or counts per revolution (CPR) of the codewheel. neighboring transition in the output of channel B. There are 4 states per cycle, each nominally 90°e. One Cycle (C): 360 electrical degrees (°e), 1 bar and window pair. State Width Error (∆S): The deviation, in electrical degrees, of each state width from its ideal value of 90°e. One Shaft Rotation: 360 mechanical degrees, N cycles. Phase (φ): The number of electrical degrees between the center of the high state of channel A and the center of the high state of channel B. This value is nominally 90°e for quadrature output. Position Error ( ∆Θ): The normalized angular difference between the actual shaft position and the position indicated by the encoder cycle count. Cycle Error (∆C): An indication of cycle uniformity. The dif­ fer­ence between an observed shaft angle which gives rise to one electrical cycle, and the nominal angular increment of 1/N of a revolution. Pulse Width (P): The number of electrical degrees that an output is high during 1 cycle. This value is nominally 180°e or 1/2 cycle. Pulse Width Error (∆P): The deviation, in electrical degrees, of the pulse width from its ideal value of 180°e. State Width (S): The number of electrical degrees between a transition in the output of channel A and the Phase Error (∆φ): The deviation of the phase from its ideal value of 90°e. Direction of Rotation: When the codewheel rotates in the direction of the arrow on top of the module, channel A will lead channel B. If the codewheel rotates in the opposite direction, channel B will lead channel A. Optical Radius (ROP ): The distance from the codewheel’s center of rotation to the optical center (O.C.) of the encoder module. Index Pulse Width (PO ): The number of electrical degrees that an index is high during one full shaft rotation. This value is nominally 90°e or 1/4 cycle. Absolute Maximum Ratings Storage Temperature, TS.........................................................................-40°C to +100°C Operating Temperature, TA....................................................................-40°C to +100°C Supply Voltage, VCC........................................................................................... -0.5 V to 7 V Output Voltage, VO.............................................................................................-0.5 V to VCC Output Current per Channel, IOUT........................................................-1.0 mA to 5 mA Shaft Axial Play..............................................................................±0.25 mm (±0.010 in.) Shaft Eccentricity Plus Radial Play........................................... 0.1 mm (0.004 in.) TIR Velocity.............................................................................................................. 30,000 RPM[1] Acceleration...........................................................................................250,000 rad/sec2[1] Note: 1. Absolute maximums for HEDS-5140/6140 codewheels only. 4 Recommended Operating Conditions Parameter Symbol Min. Temperature TA -40 Supply Voltage VCC 4.5 Load Capacitance CL Count Frequency f Typ. Max. Units 100 °C 5.5 Volts Ripple < 100 mVp-p 100 pF 2.7 kΩ pull-up 100 kHz Velocity (rpm) x N/60 Shaft Perpendicularity ±0.25 mm 6.9 mm (0.27 in.) from Plus Axial Play (±0.010) (in.) mounting surface Shaft Eccentricity Plus 0.04 mm (in.) 6.9 mm (0.27 in.) from Radial Play (0.0015) TIR mounting surface 5.0 Notes Note: The module performance is guaranteed to 100 kHz but can operate at higher frequencies. For the HEDS-9040 #T00 for operation below 0°C and greater than 50 kHz the maximum Pulse Width and Logic State Width errors are 60°e. Encoding Characteristics HEDS-9040 (except #T00), HEDS-9140 (except #B00) Encoding Characteristics over Recommended Operating Range and Recommended Mounting Tolerances unless otherwise specified. Values are for the worst error over the full rotation of HEDS-5140 and HEDS-6140 codewheels. Parameter Symbol Cycle Error Pulse Width Error Min. Typ.[1] Max. Units ∆C 3 5.5 °e ∆P 7 30 °e Logic State Width Error ∆S 5 30 °e Phase Error ∆φ 2 15 °e Position Error ∆Θ 10 40 min. of arc Index Pulse Width PO 60 90 120 °e CH. I rise after     -25°C to +100°C t1 10 100 250 ns CH. B or CH. A fall -40°C to +100°C t1 -300 100 250 ns CH. I fall after     -25°C to +100°C t2 70 150 300 ns CH. A or CH. B rise   ­-40°C to +100°C Note: t2 70 150 1000 ns 1. Module mounted on tolerance circle of ±0.13 mm (±0.005 in.) radius referenced from module Side A aligning recess centers. 2.7 kΩ pull-up resistors used on all encoder module outputs. 5 Encoding Characteristics HEDS-9040 #T00 Encoding Characteristics over Recommended Operating Range and Recommended Mounting Tolerances unless otherwise specified. Values are for the worst error over the full rotation of HEDM-614X Option TXX codewheel. Parameter Symbol Cycle Error Min. Typ.[1] Max. Units ∆C 3 7.5 °e Pulse Width Error ∆P 7 50 °e Logic State Width Error ∆S 5 50 °e Phase Error ∆φ 2 15 °e Position Error ∆Θ 2 20 min. of arc Index Pulse Width PO 40 90 140 °e CH. I rise after CH. B or CH. A fall -40°C to +100°C t1 10 450 1500 ns CH. I fall after CH. A or CH. B rise -40°C to +100°C t2 10 250 1500 ns Note: 1. Module mounted on tolerance circle of ±0.13 mm (±0.005 in.) radius referenced from module Side A aligning recess centers. 2.7 kΩ pull-up resistors used on all encoder module outputs. Encoding Characteristic HEDS-9140 #B00 Encoding Characteristics over Recommended Operating Range and Recommended Mounting Tolerances unless otherwise specified. Values are for the worst error over the full rotation of HEDM-504X Option BXX codewheel. Parameter Symbol Cycle Error Min. Typ. [1] Max. Units ∆C 6 12 °e Pulse Width Error ∆P 10 45 °e Logic State Width Error ∆S 10 45 °e Phase Error ∆Φ 2 15 °e Position Error ∆Θ 10 40 min. of arc Index Pulse Width Po 50 90 130 °e CH. I Rise after CH B or CH A fall -40°C to +100° t1 200 1000 1500 ns CH. I fall after CH. A or CH.B rise -40°C to +100° t2 0 300 1500 ns Note: 1. Module mounted on tolerance circle of ±0.13 mm (±0.005 in.) radius referenced from module Side A aligning recess centers. 2.7 kΩ pull-up resistors used on all encoder module outputs. Electrical Characteristics Electrical Characteristics over Recommended Operating Range. Parameter Symbol Min. Typ.[1] Max. Units Supply Current ICC 30 57 85 mA High Level Output Voltage VOH 2.4 Low Level Output Voltage VOL Rise Time tr Fall Time tf Notes: 1. Typical values specified at VCC = 5.0 V and 25°C. 2. tr and tf 80 nsec for HEDS-9040 #T00. 6 Notes V IOH = -200 µA max. V IOL = 3.86 mA 180 ns CL = 25 pF RL = 2.7 kΩ pull-up 49[2] ns 0.4 [2] Electrical Interface Mounting Considerations To insure reliable encoding performance, the HEDS-9040 and 9140 three channel encoder modules require 2.7 kΩ (±10%) pull-up resistors on output pins 2, 3, and 5 (Channels I, A and B) as shown in Figure 1. These pull-up resistors should be located as close to the encoder module as possible (within 4 feet). Each of the three encoder module outputs can drive a single TTL load in this configuration. Figure 2 shows a mounting tolerance requirement for proper operation of the HEDS-9040 and HEDS-9140. The Aligning Recess Centers must be located within a tolerance circle of 0.005 in. radius from the nominal locations. This tolerance must be maintained whether the module is mounted with side A as the mounting plane using aligning pins (see Figure 5), or mounted with Side B as the mounting plane using an alignment tool (see Figures 3 and  4). Figure 1. Pull-up Resistors on HEDS-9X40 Encoder Module Outputs. Figure 2. HEDS-9X40 Mounting Tolerance. 7 Mounting with an Alignment Tool The HEDS-8905 and HEDS-8906 alignment tools are recommended for mounting the modules with Side B as the mounting plane. The HEDS-8905 is used to mount the HEDS-9140, and the HEDS-8906 is used to mount the HEDS-9040. These tools fix the module position using the codewheel hub as a reference. They will not work if Side A is used as the mounting plane. The following assembly procedure uses the HEDS8905/8906 alignment tool to mount a HEDS-9140/9040 module and a HEDS-5140/6140 codewheel: Instructions: 1. Place codewheel on shaft. Figure 3. Alignment Tool is Used to Set Height of Codewheel. 2. Set codewheel height by placing alignment tool on motor base (pins facing up) flush up against the codewheel as shown in Figure 3. Tighten codewheel setscrew and remove alignment tool. 3. Insert mounting screws through module and thread into the motor base. Do not tighten screws. 4. Slide alignment tool over codewheel hub and onto module as shown in Figure 4. The pins of the alignment tool should fit snugly inside the alignment recesses of the module. 5. While holding alignment tool in place, tighten screws down to secure module. 6. Remove alignment tool. Mounting with Aligning Pins The HEDS-9040 and HEDS-9140 can also be mounted using aligning pins on the motor base. (Hewlett-Packard does not provide aligning pins.) For this configuration, Side A must be used as the mounting plane. The aligning recess centers must be located within the 0.005 in. R Tolerance Circle as explained above. Figure 5 shows the necessary dimensions. 8 Figure 4. Alignment Tool is Placed over Shaft and onto Codewheel Hub. Alignment Tool Pins Mate with Aligning Recesses on Module. Mounting with Aligning Pins The HEDS-9040 and HEDS-9140 can also be mounted using aligning pins on the motor base. (Avago does not provide aligning pins.) For this configuration, Side A must be used as the mounting plane. The aligning recess centers must be located within the 0.005 in. Radius Tolerance Circle as explained in “Mounting Considerations.” Figure 5 shows the necessary dimensions. #2-56 SETSCREW USE 0.035" HEX WRENCH 50.6 (1.99) DIA. MAX. CODEWHEEL BOSS SET SCREW 26.67 18.0 (1.050) (0.71) MAX. INDEX PULSE REFERENCE MARKER NOTE 3: * FOR WINDOW OPTION MEASUREMENT = 3.22 (0.127) INDEX PULSE POSITION 130° TYPICAL 19.0 (0.747) 0.20 (0.006) MAX. 8.99 (0.354) MAX. ROP = 23.36 mm (0.920 in.) DIMENSIONS IN MM (INCHES) Figure 6a. HEDS-6140 Codewheel Used with HEDS-9040. HEDS-9040 fig 6a 2-56 SETSCREW USE 0.035" HEX WRENCH 0.18 (0.007) 8.43 (0.332) 50.48 DIA. (1.987) MAX. SETSCREW INDEX PULSE POSITION Figure 5. Mounting Plane Side A. 130° TYPICAL 22.50 MAX. (0.886) 36.32 (1.430) ARTWORK SIDE (HEDM-6141) ARTWORK SIDE (HEDM-6140) DIMENSIONS IN mm (INCHES) Figure 6b. HEDM-614X Series Codewheel used with HEDS-9040 #T00. HEDS-9040 fig 6b Figure 7. HEDS-5140 Codewheel Used with HEDS-9140. 9 Orientation of Artwork for HEDS-9040 Option T00 (2000 CPR, 23.36mm Rop) and HEDS-9140 Option B00 (1000CPR, 11.00mm Rop) The Index area on the HEDS- 9040 Option T00, 2000 CPR and HEDS-9140 Option B00, 1000 CPR Encoder Module has a nonsymmetrical pattern as does the mating Codewheel. In order for the Index to operate, the “Rightreading” side of the Codewheel disk (the “Artwork Side”) must point toward “Side A” of the Module (the side with the connecting pins). Because the Encoder Module may be used with either “Side A” or with “Side B” toward the Mounting Surface, Avago supplies two versions of Film Codewheels for use with the Option T00 3-channel Module and Option B00 3-Channel Module: Codewheel HEDM-6140 Option TXX and HEDM-5040 Option Bxx has the Artwork Side on the “Hub Side” of the Codewheel/ hub assembly and works with “Side B” of the Module on the user’s mounting surface. Codewheel HEDM-6141 Option TXX and HEDM-5041-Bxx has the Artwork Side opposite the “Hub Side” and works with “Side A” of the Module on the mounting surface. For the Index to operate, these parts must be oriented as shown in Figure 7a and 7b. HUB MODULE SIDE B HUB IMAGE SIDE OF CODEWHEEL* MODULE SIDE A IMAGE SIDE OF CODEWHEEL* MODULE SIDE A * USE HEDM-6141 # Txx MODULE SIDE B * USE HEDM-6140 # Txx * USE HEDM-6141#Txx or HEDM-5041#Bxx * USE HEDM-6140#Txx or HEDM-5040#Bxx Figure 7a. Figure 7b. HEDS-9040 fig 7a HEDS-9040 fig 7b *Please note that the image side of the codewheel must always be facing the module Side A. 10 Connectors Manufacturer Part Number AMP 103686-4 640442-5 Avago HEDS-8902 (2 ch.) with 4-wire leads HEDS-8903 (3 ch.) with 5-wire leads Molex 2695 series with 2759 series term. Figure 8. HEDS-8903 Connector. Typical Interfaces HEDS–9040 OR HEDS-9140 HEDS–9040 OR HEDS-9140 11 CH. A CH. B CH. I CH. A CH. B CH. I HCTL-20xx QUADRATURE DECODER/COUNTER A HCTL-1100 MOTION CONTROL IC HOST PROCESSOR HOST PROCESSOR Ordering Information Three Channel Encoder Modules and Codewheels, 23.36 mm Optical Radius. HEDS-904 0 Option Assembly Tool HEDS-6140 Option 0 0 HEDS-8906 Resolution (Cycles/Rev) Lead Bend  0 - Straight Leads 1 - Bent Leads Shaft Diameter 06 - 1/4 in. 08 - 3/8 in. 09 - 1/2 in. 10 - 5/8 in. B - 1000 CPR J - 1024 CPR 11 - 4 mm 12 - 6 mm 13 - 8 mm Three Channel Encoder Modules and Codewheels, 23.36 mm Optical Radius HEDS-9040 Option 0 0 HEDM-614 Assembly Tool Option HEDS-8906 Artwork Orientation Resolution (Cycles/Rev) 0 - Artwork on hub side (use when module Side B is down) 1 - Artwork opposite hub side (use when Module Side A is down) T - 2000 CPR A HEDS-9040 * HEDS-9041 * 01 HEDS-6140 HEDM-6140 12 Shaft Diameter B C D E F G H 12 - 6 mm I J K S * 03 04 05 06 U * 08 09 10 11 12 13 14 B * * * * * * * J * * * T 02 T * * Three Channel Encoder Modules and Codewheels, 11.00 mm Optical Radius HED -914 Option HEDS-5140 Option 0 0 Assembly Tool HEDS-8905 Resolution (Cycles/Rev) Window Option Lead Bend  S – Standard W– Window Option 0 - Straight Leads 1 - Bent Leads Shaft Diameter  02 - 3 mm 04 - 5/32 in. 05 - 3/16 in. 06 - 1/4 in. 11 - 4 mm 14 - 5 mm 12 - 6 mm 13 - 8 mm S - 50 CPR C - 100 CPR E - 200 CPR F - 256 CPR G - 360 CPR H - 400 CPR A - 500 CPR I - 512 CPR Three Channel Encoder Modules and Codewheels, 11.000 Optical Radius H E D S - 9 1 4 0 Option 0 0 HE DM - 5 0 4 Option Assembly Tool HEDS-8905 Resolution (Cycle/Rev) B - Artwork Orientation A B C HEDS-9140 * * * HEDS-9141 * HEDW-9140 *    HEDS-5140 Artwork on Hub Side (use when module side B is down) 1 - Artwork on opposite hub side (use when module side A is down) 1000CPR   Shaft Diameter 0- D E F G H I * * * * * * * * J 01 02 05 11 13 14 - K S T U 11 12 13 14 * * * * * * * * 01 A 02 * C 03 04 05 06 * * * * 09 10 * E * F 08 * * G * I * * * * * * * * * * * * * HEDM-5040 B * * * * * * HEDM-5041 B * * * * * * For product information and a complete list of distributors, please go to our website: www.avagotech.com Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries. Data subject to change. Copyright © 2005-2014 Avago Technologies. All rights reserved. Obsoletes 5988-5498EN AV02-1132EN - March 17, 2014 2mm 3mm 3/16 in 4mm 8mm 5mm