VEGA 2790500 - Synchro/Resolver to Digital Encoder Converter Boards
Limited Availability

Get the Ruggedness of a Resolver and the Digital Simplicity of an Encoder. Resolver to High Resolution Incremental Encoder Output with Index and Complements with Loss of Resolver Signal Detection for Fail Safe Operation.


  • Ideal for Closed Loop Positioning Systems
  • CNC and Machine Tool Applications
  • PLC Positioning Control
  • Index/Rotary Tables
  • Tracking/Telescope/Telemetry Systems
  • Transfer Lines
  • Factory Automation
  • Robotic Applications
  • Nuclear Applications


Excitation: 2.5, 5.0, or 10.0 kHz
Resolver Input: 0.8 to 18.0 vPP
Power: +4.8 to +5.4 vDC @ 250 mA
Drive Capacity: 200 mA Peak
Mechanical: 5.250 x 2.825 x 1.000 in.
5.400 x 3.500 x 1.850 w/DIN
Weight: 80 grams (148 grams w/DIN)
Accuracy: +/- 3 arc minutes typical


  • Makes a Synchro/Resolver as Easy to use as an Encoder
  • Non-Phase Locked Loop Design for Faster Loop Closure (Less than 50 uSec @ 10 kHz)
  • Incremental Encoder Output (Absolute within 1 Resolver Cycle)
  • High Resolution and Highly Accurate
  • Tuned Filter For Noise Immunity
  • Single +5 vDC Supply Operation
  • Loss of Signal Detection
  • Fault Signal Outputs: Tri-State A-Quad-B, and Active Pull-Up
  • Status LED's for A, B, Z, Signal HI, Signal MID, and Fault
  • Configurable Fault conditioning for Fail-Safe operations
  • Compact Design and Easy to Install
  • Panel Mount or DIN Rail mounting option


  • Works with Harowe/Danaher, Tamagawa, Kerfott, Singer, AMCI, or most any synchro/resolver.
  • Works with R11, R25 and Hollow Shaft Resolvers
  • Two Pole and Multi-Pole (Multi-Speed) Resolvers
  • Transformation ratios from 0.25 to 2.0
  • Jumper selectable excitation frequency 2.5, 5 and 10 kHz
  • Incremental encoder A-Quad-B with Index and complements
  • TTL / Line Driver Outputs for A-Quad-B and Index
  • Jumper selectable quadrature count, 1000, 1024, 2000, 2048, 4000, 4096, 8000, and 8192
  • Index pulse (Z Channel) occurs once per resolver cycle


The tracking rate is a function of the excitation frequency and quadrature counts. With a 2.5 kHz excitation and 4000 quadrature counts the tracking rate would be 9,600 rpm. With a 10.0 kHz excitation and 4000 quadrature counts the tracking rate would be 38,400 rpm. Reducing the counts will increase the tracking rate proportionately.

Part Number

Model Description
2790500 Resolver to Encoder Converter
2790DIN DIN Rail Mounting Option
2790CK1 Solder Type Connector Kit
2790CK2 Crimp Type Connector Kit