GPI Rotary Absolute Encoders

Model 7700 rotary kit Virtual Absolute(R) encoder
Model A23S Single and Multi-Turn Absolute encoder
Model A25S rotary absolute encoder
NEW! Model A19 true absolute rotary encoder
NEW! Model A37 true absolute rotary encoder
NEW! Model A58 true absolute rotary encoder
Model M122 magnetic rotary encoder
Model V860H Virtual Absolute encoder
Model 9710 Virtual Absolute encoder
Model Vx20 Virtual Absolute encoder
Model Vx35H Virtual Absolute encoder
Model ASC3N absolute serial interface card
Accessories
Model VA Interpolating Decoders

Certain rotary absolute encoders utilize GPI's patented Virtual Absolute (R) technology.  Please read our Virtual Absolute article for information on this revolutionary technology that generates absolute positioning for nearly the price of an equivalent incremental encoder!

Model 7700 kit Virtual Absolute Encoder 

• Byte-wide multiplexed natural binary
  output; parallel, USB or SSI format
• max resolution = 19 bits (524,288
  words)
• 3.52° initialization angle (standard)
• Compact 0.5" tall x 1.7" dia. (max)
• Works with various interpolating
  decoders
• Built-in error detection

DATASHEET

Model A23S Multi-Turn Absolute Encoder 

• Single-turn (12 or 13 bits/turn) and
  multi-turn (2³⁸ turns) models
• SSI or Programmable SSI output
• Compact 2.3"-dia housing with f 6-
  mm or f 10-mm shaft
• Protected to IP65

SSI DATASHEET

Model A25S Rotary True Absolute Encoder

• Faster and more accurate than either
  a resolver-based system or any
  competitive optical encoder
• 2.5" dia x 1.25" long transducer; 3/8"
  shaft dia
• Up to 17-bit resolution (131,072
  words/turn)
• 1 MHz whole-word update rate
  (Parallel) or 100 kHz (Serial)
• Serial or parallel natural binary bus-
  compatible output
• Fully accurate up to 600 rpm
• Use the ASC3N and software to
  greatly simplify communications with
  your PC

DATASHEET

Model A19 True Absolute Rotary Encoder

• 15-bit resolution!
• 19 mm diameter
• Shaft or blind hollow-shaft
  configurations
• Gray code or natural binary
• SSI output format

DATASHEET

Model A37 Industrial Rotary Absolute Encoder

• Mini encoder with opto-electronic
  technology
• Up to 12-bit resolution (parallel or
  serial)
• 37 mm aluminum housing
• 3-4 mm (0.125 -0.25") dia stainless
  steel shaft
• Accuracy: +/- 0.5 LSB

DATASHEET

Model A58 True Absolute Rotary Encoder

• 12- to 16-bit resolution
• 58 mm diameter
• Gray code or natural binary
• Parallel, SSI and multiplexed parallel
  outputs
• Accuracy: +/- 0.5 LSB

DATASHEET

Model M122 magnetic rotary encoder

• Non-contact, frictionless, bi-directional
  rotation
• 22mm body; blind hollow shaft
• Four different output options
• Up to 13 bits of resolution

DATASHEET

Model V860H Virtual Absolute Encoder

• 6" (152 mm) OD x 2.5" (64 mm) ID x
  4.2" (107 mm) long
• 20-bit resolution (1,048,576 words/turn)
• 1 MHz data update rate
• Fully accurate to 120°/s
• 0.3° initialization angle
• Parallel natural binary output

V860H Datasheet

Model 9710 Virtual Absolute Modular Encoder

• Disc dia up to 20"
• Works with Model VA interpolating
  decoder
• Vacuum-comptable option
• Hub designs by Gurley
• 1° initialization angle
• Non-contacting, friction-free design
* With external electronics

Under certain conditions, smaller read heads are available.
Please consult factor for more details.

9710 DATASHEET

Model Vx20 Virtual Absolute Encoder

• up to 19-bit resolution (524,288
  words/rev)
• Unique built-in test functions
• Byte-wide multiplexed natural binary
  output
• Solid shaft or blind hollow shaft
  versions
• IP61 sealing
• two accuracy grades

Vx20 DATASHEET

Model Vx35H Virtual Absolute Encoder

• up to 20-bit resolution (1,048,576 
  words/rev)
• Unique built-in test functions
• Byte-wide multiplexed natural binary
  output
• Fits shafts up to f1.20" (30mm)
• Internal bellows-type flexible shaft
  coupling 
• Three accuracy grades

Vx35H DATASHEET

Model ASC3N Absolute Serial Interface Card

• Provides an interface between an IBM®
  PC (or compatible) computer and A25S
  or V235S Absolute Encoders
• Handles up to 3 encoders
  simultaneously
• Includes a comprehensive User's Manual
  and 3.5" diskette with test and utility
  software and example programs

DATASHEET

Accessories

As a convenience to our customers, GPI offers various accessories to make it easier to install and use our encoders.  These include:

• Digital displays: incremental and absolute
• Mating connectors
• Cable assemblies
• Shaft couplings - check out our SCA coupling datasheet by clicking here.
• Mounting flanges

Please consult with your local representative or contact the factory to discuss your requirements.
 

Models VA, VB, VF and VG Interpolating Decoders