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Part: E4
Category:
Optoelectronics
-> Drivers/Controllers
-> Encoders->Industrial
Description: Miniature Quick Assembly Optical Encoder
Company: Us Digital
Datasheet: Download E4 datasheet File size : 280 kB
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Datasheet text preview:
E4
Description:
The E4 optical kit encoder is a miniature non-contacting rotary to digital position feedback device. This reflective encoder is designed to easily mount to and dismount from an existing shaft. The internal monolithic electronic module converts the real-time shaft angle, speed, and direction into TTL-compatible outputs. Simplicity and low cost make the E4 ideal for both high and low volume motion control applications. Its tiny size makes it an ideal choice for small DC motors. The reflective sensor incorporates an LED light source and a monolithic photo detector with signal shaping electronics to produce the two channel bounceless quadrature TTL outputs. The hub of the encoder wheel is available for installation onto shafts from .059" to .197" (1.5mm to 5mm) in diameter. Standard diameters are stocked. A quick turn around time is offered on many special order diameters. The base provides mounting holes for two 3-48 x 1/4" screws on a .586" bolt circle. When mounting holes are not available, a pre-applied transfer adhesive (with peel-off backing) is available for "stick-on" mounting. The cover is easily snapped onto the base. It is embossed with the connector pin-out. The E4 can be connected by using a high retention 4 conductor snap-in polarized 1.25mm pitch connector. The mating connector is polarized and should attach smoothly to the encoder; do not force. See the third page of this data sheet for Cables & Connectors.
Miniature Optical Kit Encoder
Features:
Ø M i n i a t u r e size Ø Q u i c k , simple assembly and disassembly Ø L o w cost Ø H i g h retention snap-in polarized connector Ø Fits shaft diameters of .059" to .197" (1.5mm to 5mm) Ø Fits shaft lengths of .285" to .392" Ø Accepts ±.020" (±.5mm) axial shaft play Ø Off-axis mounting tolerance of .010" Ø Tracks from 0 to 30,000 cycles/sec Ø 1 0 0 to 300 cycles per revolution (CPR) Ø 400 to 1200 pulses per revolution (PPR) Ø 2 channel quadrature TTL squarewave outputs Ø - 1 0 ° to +85°C operating temperature Ø S i n g l e +5V supply Ø L o w power strobe option available Ø P i n - o u t is engraved on the cover Ø A d h e s i v e option available Ø US Digital warrants its products against defects in materials and
workmanship for two years. See complete warranty for details.
Mechanical Specifications:
US
Corporation
Digital
TM
phone: 360.260.2468 l sales: 800.736.0194 l fax: 360.260.2469 email: sales@usdigital.com l website: www.usdigital.com 11100 ne 34th circle l vancouver, washington 98682 USA
page 1
E4
Assembly Instructions: 1. Base Mounting
Place optic module onto shaft. Secure base to mounting surface by using two screws provided. Transfer adhesive is also available. See last page for pricing and availability. Optional: Before placing optic module onto shaft, place centering tool onto shaft as shown below.
Miniature Optical Kit Encoder
2. Spacer Installation
Place spacer tool on optic module. See last page for spacer tool information.
4. Cover Installation
Press cover on. With thumb and finger, squeeze ears together to insure that cover fully latches. Note: Mating connector is polarized and should attach smoothly to the encoder, do not force.
3. Hub Installation
Slide hub down shaft until it bottoms out against spacer tool. Tighten set screw with hex wrench provided while pressing down on hub. Remove hex wrench and spacer tool.
Mechanical Notes:
Parameter Moment of Inertia Hub Set Screw Size Hex Wrench Size Mounting Screw Size M-option Screw Size Screw Bolt Circle Diameter Required Shaft Length* * Includes axial play
Dimension 7.4E-6 3-48 .050 #3-48 x 1/4" 2.5mm x 6mm .586 ±.002 .285 to .392
Units oz-in-s2 in. in. in. in.
Absolute Maximum Ratings:
Parameter Vibration (5 to 2kHz) Shaft Axial Play Off-Axis Mounting Tolerance Acceleration Storage Temperature Relative Humidity Min. -40° -
Max. 20 ±.020 .010 250,000 85° 90%
Units g in. in. r a d / s e c2 °C %
US
Corporation
Digital
TM
phone: 360.260.2468 l sales: 800.736.0194 l fax: 360.260.2469 email: sales@usdigital.com l website: www.usdigital.com 11100 ne 34th circle l vancouver, washington 98682 USA
page 2
E4
Compatible Cables & Connectors:
4-pin Micro: CON-MIC4 Connector CA-3285 Connector on one end with 4 12" wires CA-3286 Connector on one end of a 6' round twisted pair cable Note: See Cables & Connectors data sheet for more information.
Miniature Optical Kit Encoder
Ø The connector built into the encoder is Molex# 53048-0410. Ø The mating connector is made up of housing (Molex# 51021-0400) and 4 individual Ø Special crimp tool (Molex# 50079) is needed to install connector pins.
crimp-on pins (Molex# 50079-8100).
Installation Note: Connector is polarized and should attach smoothly to the encoder, do not force.
Note: A leads B for clockwise shaft rotation, and B leads A for counterclockwise shaft rotation viewed from the cover/label side of the encoder.
CPR (N): The number of Cycles Per Revolution. One Shaft Rotation: 360 mechanical degrees, N cycles. One Electrical Degree (°e): 1/360 of one cycle One Cycle (C): 360 electrical degrees (°e). Each cycle can be decoded into 1 or 4 codes, referred to as X1 or X4 resolution multiplication. Symmetry: A measure of the relationship between (X) and (Y) in electrical degrees, nominally 180°e. Quadrature (Z): The phase lag or lead between channels A & B in electrical degrees, nominally 90°e. Cycle Error: An indication of cycle uniformity. The difference between an observed shaft angle which gives rise to one electrical cycle, and the nominal angular increment of 1/N of a revolution.
Torque Specifications:
Parameter Hub Set Screw to Shaft Cover Base to Mounting Surface
Torque 1.5-2.0 in.-lbs. 1.5-2.0 in.-lbs. 2-3 in.-lbs.
Electrical Specifications:
Parameter Min. Typ. Max Units Notes Supply Voltage 4.5 5.0 5.5 VDC Ripple < 100mVp-p. See note 1. Supply Current 15 21 29 mA Load Capacitance 100 pF See note 2. Count Frequency 30 kHz RPM/60 x cycles/rev. High Level Output Voltage 2.4 VDC IOH = -640 µA max. See note 2. Low Level Output Voltage 0.4 VDC IOL = 3.86 mA Rise Time 150 200 ns 25pF. See note 2. Fall Time 50 60 ns Operational Temperature -10°C 85°C Note 1: Standard internal .1uF bypass capacitor is installed between power and ground. Note 2: Standard internal 3.3KOhm pull-ups are installed on channels A and B.
Max Shaft Speed:
Electrical CPR RPM 100 18000 108 16500 120 15000 125 15000 128 15000 200 9000 250 7200 256 7200 288 6250 300 6000
Mechanical CPR RPM 100 50000 108 50000 120 50000 125 50000 128 50000 200 50000 250 50000 256 50000 288 50000 300 50000
Internal Schematic:
Encoding Characteristics:
Accuracy Min. Typ. Symmetry 130 180 Quadrature 15 90 Symmetry* 95 180 Quadrature* 5 90 Cycle Error -90 0 * For resolutions <110 CPR.
Max. 230 165 265 175 +90
Units °e °e °e °e arc min.
US
Corporation
Digital
TM
phone: 360.260.2468 l sales: 800.736.0194 l fax: 360.260.2469 email: sales@usdigital.com l website: www.usdigital.com 11100 ne 34th circle l vancouver, washington 98682 USA
page 3
E4
Miniature Optical Kit Encoder
MCTOOL Price $5.00
CPR: 100* 108* 120 125 128 200* 250 256 300 Shaft Diameter: Code Size 059 1.5mm 079 2mm 091 2.3mm 098 2.5mm 118 3mm 125 1/8" 156 5/32" 157 4mm 187 3/16" 197 5mm
Accessories:
Centering Tool: This reusable tool provides a simple method for accurately centering the E4 base to the shaft. It is recommended in the following situations:
Ø When using the T-option transfer adhesive. Ø When the position of the mounting holes is in question.
Instructions: When mounting the encoder base, slide centering tool onto shaft, insert centering tool into shaft hole of the base and slide down onto mounting surface (see figure 1 of assembly instructions). Tighten mounting screws and remove the centering tool. Hex Tools: HEXD-3404 Price: $5.00 Hex driver, .050" flat-to-flat for 3-48 set screw. HEXW-349 Price: $0.50 Hex wrench, .050" flat-to-flat for 3-48 set screw.
Note: At least one spacer tool and one hex driver/wrench is included with each order.
Spacer Tool: SPACER- 4 2 1 6 Price: $0.50 .070" thickness, round.
Transfer Adhesive:
When mounting holes are not available, a pre-applied transfer adhesive (with peel-off backing) is available for "stick-on" mounting. Use the centering tool (above) to position the base. T-option specifies transfer adhesive. Instructions: Peel off paper backing, slip centering tool into center hole of base, insert shaft into hole of centering tool and slide base and centering tool down onto mounting surface (see figure 1 of assembly instructions). Press to form a good bond, then slip tool off and continue with standard mounting instructions. A centering tool is highly recommended when using transfer adhesive.
Encoder Pin-out:
Pin 1 2 3 4 Description +5VDC power A channel Ground B channel
Low Power Strobe:
To reduce the average power requirements, the L-option version of the E4 power can be strobed on just long enough to sample outputs A and B. This option is the same as our standard E4, except the internal power bypass capacitor is not installed. The outputs settling time is typically 200 to 400 nano seconds after power up. The minimum sample frequency must be less than the maximum RPM X the CPR / 10.
Ordering Information:
Price: $29.00 / 1 $ 2 5 . 8 0 / 10 $ 2 2 . 0 0 / 50 $ 1 9 . 5 0 / 100 $ 1 7 . 3 0 / 500 $ 1 5 . 5 0 / 1K
Cost Modifiers:
Ø Ø Ø Ø
Add 10% for T-option transfer adhesive. Add $3.00 for PKG1-option packaging. Add $4.00 for PKG2-option packaging. Add $7.00 for PKG3-option packaging.
E4 CPR: 100* 108* 120 125 128 200* 250 256 288 300 Shaft Diameter: Code Size 059 1.5mm 079 2mm 091 2.3mm 098 2.5mm 118 3mm 125 1/8" 156 5/32" 157 4mm 187 3/16" 197 5mm Options: (specify in order shown) L = Low power strobe. H = Adds hole in housing to allow the shaft to pass through. T = Adds transfer adhesive.** M = Provides alternate metric 2.5mm x 6mm screws.*** Option Notes: * Only compatible with 059, 079, 091 and 098 shaft diameters. ** A centering tool is highly recommended when using this option. *** When M-option is not specified the default is 3-48 x 1/4" screws. Packaging Options: Blank (default) = Encoder components, one spacer tool and one hex driver per 100 encoders packaged in bulk. PKG1 = Each encoder packaged individually. One spacer tool and one hex driver per 100 encoders packaged in bulk. PKG2 = One spacer tool and one hex wrench individually packaged together with each encoder. PKG3 = One spacer tool, one hex wrench, and one centering tool individually packaged together with each encoder. Ø If you would like individual mounting screws, instructions, or other custom kits please call. Technical Data, Rev. 03.18.03, March 2003 All information subject to change without notice.
US
Corporation
Digital
TM
phone: 360.260.2468 l sales: 800.736.0194 l fax: 360.260.2469 email: sales@usdigital.com l website: www.usdigital.com 11100 ne 34th circle l vancouver, washington 98682 USA
page 4
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