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920 Rotary Incremental Encoder

920 Rotary Incremental Encoder

920 Rotary Incremental Encoder

Product catalog summary
Overview: The document outlines the specifications and features of the Gurley Series 9x20 Rotary Incremental Encoder, tailored for industrial applications that demand high resolution and precision.
Specifications: The encoder achieves a maximum resolution of 144,000 counts per revolution, equivalent to 9 arcseconds. It is available in two models, 9120 and 9220, each with distinct mechanical configurations. Key features include LED illumination, differential photo-detectors, and RS-422 differential line driver output for enhanced noise immunity. The encoder is sealed to IP66 standards, with IP64 at the shaft exit, and incorporates sealed bearings to resist contamination.
Models:
  • Model 9120: Capable of up to 4,500 cycles/rev and 18,000 counts/rev, with an instrument error of ±60 arcseconds.
  • Model 9220: Supports up to 36,000 cycles/rev and 144,000 counts/rev, with an instrument error of ±25 arcseconds, and includes a watchdog circuit for fault detection.
Performance and Environmental Conditions: The encoder operates within a temperature range of 32 to 158°F (0 to 70°C) for model 9120 and 32 to 122°F (0 to 50°C) for model 9220. It can endure shocks up to 50g and vibrations up to 15g.
Electrical Connections: Utilizing EIA/RS-422 balanced differential line drivers, the encoder offers various index options for output waveforms. The 9220 model features a fault signal for operational issue detection.
Special Capabilities: Gurley Precision Instruments offers customization of encoders for specific needs, including higher frequency response, improved accuracy, and broader temperature ranges.
Warranty: A limited warranty covers defects in material and workmanship for one year from the shipment date.
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Catalog excerpts

920 Rotary Incremental Encoder-2

9 NOTES:1. Total Optical Encoder Error is the algebraic sum of Instrument Error + Quadrature Error + Interpolation Error. Typically, these error sources sum to a value less than the theoretical maximum. Error is guaranteed at 20аC and is defined at the signal transitions. It does not include quantization error, which is 1/2 quantum. ("Quantum" is the final resolution of the encoder, after user's 4X quadrature decode.)2. Instrument Error is the sum of disc pattern errors, disc eccentricity, bearing runout and other mechanical imperfections within the encoder. This error tends to vary slowly around...

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920 Rotary Incremental Encoder-3

Input Power 9120: +5 VDC @75 mA max. Standard; +12 VDC and +15 VDC available > ENCODEREIA/RS-422 DRVRTWISTED PAIREIA/RS-422 RCVR 9220: +5 VDC @75 mA max. > 100 Output Device On all channels: EIA/RS-422 balanced differential line driver, protected to survive an extended-duration short circuit across its output. May be used single-ended for TTL-compatible inputs. Index Options9120: Index is available in one of three formats: ungated full cycle wide 180Ѱelect; Half-cycle wide, gated with high state of B; or quarter-cycle wide, gated with high states of A and B. > SUGGESTED EIA/RS-422 TRANSMISSION...

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920 Rotary Incremental Encoder-4

.27 [6.7] 1.80[45.7] .01 [.25] 1.19 [30.2] R3 PLCS DIA (SEE TABLE) SHAFT INTRUSION (see table) 1.95[49.5]MAX DIA SLOT THRU.125 [3.18] WIDE3 PLCS EQ SPON A 22.5 3 PLCS 2.125 [53.98] B.C. 45 THREAD "B" UNC-2B2 PLCS 90 APART 3 PLCS 1.70 [43.2] >

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920 Rotary Incremental Encoder-5

920S WITH BASE CODE C 920S WITH BASE CODE E > .10 [2.5] ORDER SCA-04E-XXXSHAFT COUPLING 2.300 [58.42]DIA DIA(SEE TABLE) 1.25 [31.8] 920S WITH BASE CODE D > 60 1.38 [35.1] R OR.12 [3.0] X 45 CHAMFER4 PLCS .50 [12.7] 2.06[52.3]SQ .156 [3.96]THRU4 HOLES 2.50 [63.5]DIA .12 [3.0]SHAFT INTRUSION0.61 [15.5] MAX 0.38 [9.7] MIN 1.75 [44.5]DIA .136 [3.45] THRU3 HOLES EQ SPON A .10 [2.5] 2.225 [56.52] B.C. 1.75 [44.5]2 PLCS.875[22.23] 2 PLCS TM920AA SCA-04E NOTE: Tether Mount Shaft Coupling (for FLEXIBLE COUPLINGS 1 Flexible couplings are intended to absorb normal installation misalignments and run-outs...

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920 Rotary Incremental Encoder-6

MODEL CAB - Cable length, inches (04-99) 9120 9220SHAFT 18 Standard - Shaft type 00 With CONN code A or MEXIT B Blind hollow shaft S Solid shaft Cable exit or connector location S Side (with CONN code P , Q, R or S ) LINES - Disc line count T Top (with CONN code A or M ) 00500, 00512, 00900, 01000, 01024, 0180002000, 02048, 02500, 02540, 03000, 03600 04096, 04500 Consult factory for other res. CONN - Connector IND - Index format P Pigtails (no connector) F Full cycle ungated (9 1 20 only) Q DA-15P H Half cycle gated (9 1 20 only) R DE-15P Q Quarter cycle gated S DE-9P A MS3102E-18-1P (9120S only)...

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