datasheets - Gurley Precision Instruments
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1. A PAGE 5 OF 6 800 759 1844 518 272 6300 fax 518 274 0336 v3 1 Online at www gurley com e mail info gurley com ORDERING INFORMATION ENV LINES TYPE IND LENGTH CONN DIA e UI OO CT OOO ENV S Standard environment V Vacuum compatible LINES HHH Lines rev if TYPE R or S scale pitch in pin if TYPE E or scale pitch in um TYPE M Add leading zeroes for 5 digits total TYPE R Rotary with head straddling the O D S Rotary with head on the I D consult factory M Metric scale LINES um line E English scale LINES yin line INDEX S Single aperture LNGTH Cable length in inches 04 99 36 Standard CONN P Pigtails no connector R DE 15P use with CAZxxx extension cable from 9710 to VA electronics V Amp 102387 1 to connect 9710 directly to VA electronics DIA HHHH Disc O D if TYPE R or disc D if TYPE S Diameter in inches to the nearest 0 01 with no decimal point example 0390 3 90 Add leading zero for 4 digits total 9999 Use for linear encoders TYPE E or M SF Issued at time of order to cover special customer requirements N No special features Specify disc or scale separately Options and accessories VA Virtual Absolute Interpolating Decoder See Model VA data sheet CAZxxx Extension cable xxx inches long 9710 to Model VA SPECIAL CAPABILITIES For special situations we can optimize encoders to provide higher frequency response greater accuracy wider temperatu2. GURLEY MODEL 9710 VIRTUAL ABSOLUTE ENCODER MOTION TYPE ROTARY OR LINEAR S USAGE GRADE P PROTECTED INDUSTRIAL OUTPUT J ABSOLUTE MAX RESOLUTION D 27 STEPS REV 0 3 ARCS 0 25 uM W EXTERNAL ELECTRONICS e ABSOLUTE OUTPUT e FRICTION FREE OPERATION a MANY Disc SIZES e VACUUM GOMPATIBLE OPTION The Model 9710 is a versatile read head that can be configured for use with either a rotary disc or linear scale Its modular construction provides friction free operation and the wide selection of disc sizes gives the design engineer great flexibility When used with the Model VA or other interpolating decoder its optical resolution is electronically increased The natural binary position output is augmented by a number of built in test functions for maximum system reliability For incremental positioning in a modular encoder please refer to the 9710 rotary 7700 rotary and linear in a compact package and 9717 linear only datasheets x s gt ingenui Gurley Precision Instruments Iso 514 Fulton Street 9001 Troy NY 12180 U S A 800 759 1844 518 272 6300 fax 518 274 0336 CERTIFIED Online at www gurley com e mail info gurley com SPECIFICATIONS Electrical Vec 5VDC 0 25 VDC 10 mA Input Power lien 20MA regulated DC current source Light Source Screened infra red LED rated life gt 100 000 hours High output differential Sine Cosine and Index
3. S T 750 DISC OR SCALE 365 non 4 00 Ze ORDERED non LJ np 25 4 i SEPARATELY NOM Ii f amp 1 4 40 UNC 2BX 20 5 1 DP io 2 MOUNTING HOLES 4 S e 375 9 52 RING NOM TUBING SHRINK POLYOLEFIN 29 7 37 DETECTOR as BLK 2 5 MAX FOR 3 8 THK ASSY D NON VACUUM VERSION ONLY DISC OR SCALE 4 TO 99 100 TO 2515 875 36 915 STANDARD 122 23 10 CONDUCTORS STRANDED TFE INS 28 AWG 7 36 PIGTAIL LEADS CODE P AXIS OF ROTATION CL MOUNTING Le 1 437 36 50 INSTALLATION INSTALLATION DIM DM CORK OR RESILIENT MATERIAL COMPRESSED d d 00 n MV 5 4 APPROX 003 08 25 4 CUSTOMER 25 4 CLAMP FULL SHAFT LENGTH N OF SCALE OR E SECTIONS APPROX EVERY 3 75 SS _ 062 005 THROAT GAP T 1 57 13 T e YW mM READING HEAD READING HEAD MOUNTING SURFACE MOUNTING SURFACE MOUNT AGAINST FLAT MOUNT AGAINST FLAT BURR FREE SURFACE DISC BURR FREE SURFACE HUB EPOXY EPOXY BOND BOND OPTIONAL 1 08 MAX l 1 08 MAX 27 4 _L_ JC 001 025 27 4 _ c 001 025 LINEAR APPLICATIONS ROTARY APPLICATIONS SUGGESTED MOUNTING METHODS Gurley Precision Instruments 9 7 1 o VA 514 Fulton Street Troy NY 12180 U S
4. ck and an index track In an incremental encoder the index occurs at one place in the full travel but in a VA encoder the index track is a continuous serial code similar in appearance to a bar code You don t know position immediately upon start up as you do in a conventional absolute but after a very short travel in either direction and starting from anywhere you know exactly where you are In a rotary VA this initialization angle is typically about one degree depending on the encoder s line count in a linear VA encoder less than 1 mm motion is needed From then on the encoder is truly absolute There are ways to build a pseudorandom encoder so that absolute information is available on power up without initializing but these techniques require far more complex sensing hardware they often impose slower operation as well And none of them offers the sophisticated built in testing of GPI s Virtual Absolute technology To complete the system the 9710 is used with one of Gurley s Interpolating Decoders The size of a credit card it contains patented high speed circuitry to decode the special serial index track and interpolation to increase the final resolution In addition to the natural binary position output a Status bit is provided to tell you when the encoder is initialized This bit is ata logic high whenever the initializing motion is not yet complete or when some other problem such as supply voltage interruption electrical noise damag
5. e or fouling of the disc interferes with the proper code sequence from the index track When these self tests are all satisfied the status bit is low indicating the position data output is valid The 9710 is usually used with the Model VA interpolating decoder but other versions are added from time to time For amore thorough discussion refer to the data sheet for the Model VA DISCS Gurley does not offer disc hubs as catalog items but we will mount discs to customer furnished hubs and we can provide hubs designed for your specific application Even if we are not providing the mounting or the hub we strongly suggest that you consult with us regarding the proper design of the disc hub assembly and mounting of the 9710 Read Head All dimensions are in inches mm Consult factory for other sizes or line counts including non binary numbers O D LD Thick Lines Init angle Throat CL Mntg P N 79 502 36 830 3 175 4096 R 1 087 SE Bee CX01327 108 220 70 612 2 540 SES j e SN E CX01115 121 920 73630 Boas 496R 105 Seen esor Ou 162 560 111 760 175 498R 105 692 een CX01258 228 600 152 400 6 350 16384R oan GE BEEN CX01296 412 70 355 600 5 969 4096S 105 na usagi CX01346 495 300 303 700 0254 2048R 194 eer 240792 BX02049 1 R means read head straddles disc O D this is the prefer
6. photocurrents Output Signals Signal levels are designed for proper operation with GPI s various electronics packages Consult factory to establish criteria for waveforms when 9710 is used with other electronics Mechanical Materials Encoder Body Aluminum Scale of Disk Vacuum deposited chrome pattern on glass Weight Read Head 1 7 oz 49g cable 0 034 oz in 0 04 g mm Scale 0 31 oz in 0 34 g mm 1 125 x 0 189 cross section Performance Frequency Response 50 kHz all channels Max Speed may be limited by subsequent electronics see data sheet for Model VA interpolating decoder Quadrature Error 30 typical depends on user e installation Scale Accuracy Standard eave DC 8 umim Optional 0 00005 in ft 4 um m Disc Accuracy Dia lt 3 10 arcs Dia gt 3 5 arcs Environmental Operating Temp 40 F to 185 F 40 C to 85 C Humidity 98 rh non condensing Shock 50g 11 ms Vibration 2g 0 2000 Hz As part of our continuing product improvement program all specifications are subject to change without notice Gurley Precision Instruments 9 7 1 o VA 514 Fulton Street Troy NY 12180 U S A PAGE 2 OF 6 800 759 1844 518 272 6300 fax 518 274 0336 v3 1 Online at www gurley com e mail info gurley com 9710 VA THEORY THEORY OF OPERATION SHORT VERSION Virtual Absolute VA discs and scales are similar to incremental discs and scales in that they contain a cyclic tra
7. re range reduced torque non standard line counts or other modified characteristics In addition we regularly design and manufacture custom encoders for user specific requirements These range from high volume low cost limited performance commercial applications to encoders for high performance high reliability conditions We welcome the opportunity to help you with your special encoder needs WARRANTY Gurley Precision Instruments offers a limited warranty against defects in material and workmanship for a period of one year from the date of shipment Gurley Precision Instruments 9 7 1 o VA 514 Fulton Street Troy NY 12180 U S A PAGE 6 OF 6 800 759 1844 518 272 6300 fax 518 274 0336 v3 1 Online at www gurley com e mail info gurley com
8. red method S means read head straddles disc D consult factory 2 This disc requires an interpolating decoder other than the Model VA consult factory Gurley Precision Instruments 514 Fulton Street Troy NY 12180 U S A 800 759 1844 518 272 6300 fax 518 274 0336 Online at www gurley com e mail info gurley com 9710 VA PAGE 3 OF 6 V3 1 DRAWINGS SCALES The following scales are available from existing masters Additional standard scales may be added periodically we can always make special scales on a custom basis Maximum Initialization Scale pitch resolution Max measuring length Cross section distance 7 1 125 x 0 125 28 575 768 um 64 um 0 25 um 262 144 mm 10 32 x 3 175 mm 0 030 with Model VA support electronics 9710 Encoder Circuit Suggested Interface Circuit lt lt 20mA EMITTER ASSY U H H r Gurley Precision Instruments 9 7 1 o VA 514 Fulton Street Troy NY 12180 U S A PAGE 4 OF 6 800 759 1844 518 272 6300 fax 518 274 0336 v3 1 Online at www gurley com e mail info gurley com DRAWINGS 1 71 43 4 MAX WITH 3 8 THK DISC OR SCALE RETICLE GAP 002 TO 008 0 05 TO 0 20 SEE USER S MANUAL FOR DETAILS 1 00 25 4 Se eee e EMITTER ASSY 15 88 I d PATTERN e l SURFACE
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