VEGA 2800502 - Resolver to Encoder with Hall Effect Converter Boards

Get the Ruggedness of a Resolver and the Digital Simplicity of an Encoder. Resolver to High Resolution Incremental Encoder and Hall Effect Simulation for Motors with Thermistors.


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



2 Phase @ 10.0 kHz

Resolver Input:

0.8 to 18.0 vPP


+4.8 to +5.4 vDC @ 250 mA

Drive Capacity:

200 mA Peak


5.150 x 1.650 x 0.850 in.


62 grams


+/- 3 arc minutes typical


  • Non-Phase Locked Loop Design
  • Fast Response for Motor Commutation (Less than 50 uSec)
  • Automatic Gain Adjust for resolvers transformation ratio
  • Hall Signals for Indication of shaft position
  • Input for Motors with Thermal Switches
  • 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 SSR contacts
  • Status LED's for Power, Signal HI, and Fault,
  • Easy to Install and Easy to Set Up
  • Compact Connector Design


  • 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
  • Fixed Excitation Frequency of 10 kHz
  • Incremental encoder A-Quad-B with Index and complements
  • TTL / Line Driver Outputs
  • Personality Module supports quadrature counts of 8192 (Line Counts: 2048)
  • Index pulse (Z Channel) occurs once per resolver cycle
  • Personality Module supports Hall cycles of up to 9 per resolver cycle

Simulated Hall Effect

The VEGA 2800502 Resolver to Digital Converter uses the resolver signals to produce three Hall type signals at TTL levels to duplicate the signals required by drives using Hall effect sensors to determine the shaft position for commutation purposes. This makes the 2800502 ideal for retrofitting drives that require indication of the shaft position in order to commutate the winding power of AC servomotors with resolvers.

High Speed Tracking

The tracking rate is a function of the excitation frequency and quadrature counts. With a 10 kHz excitation and 8192 quadrature counts the tracking rate would be 36,621 resolver cycles per minute.

Part Number

Model Description
2800502.xx.xx Resolver to Encoder Converter w/Hall

The model number extension indicates the number of hall cycles and the firmware version. Select the appropriate suffix from the list below:

  • 2800502.01.53 1 hall cycle per resolver cycle
  • 2800502.02.52 2 hall cycles per resolver cycle
  • 2800502.03.57 3 hall cycles per resolver cycle
  • 2800502.04.56 4 hall cycles per resolver cycle

Custom Firmware for 3rd Party Motors Available.