Products

Magneto-resistive Encoder

MR2 - Magneto-resistive Encoder

MR2

The MR2 compact magneto-resistive encoder is available with a wide range of resolution, from 4 up to 512 lines. It perfectly suits many applications requiring closed loop motion feedback as well as accurate positioning.

Motor Highlights

  • Compatible with all brush DC motor frame sizes
  • Compact integration
  • TTL and CMOS compatible
  • Resolution up to 512 lines per revolution
  • Accuracy in speed and position feedback

Customization Available

  • Flat cable output
  • Output cables direction
  • Cables and connectors output
  • Low temperature version (-40°C)
    Specification + Detail
    Resources
    Metric English 
    Winding{%|%}unit MR2
    Diameter{%|%}in
    Diameter{%|%}mm
    Nominal Voltage{%|%}V
    Optimization (rpm)
    No-Load Speed{%|%}rpm
    Type Magnetoresistive Encoder
    Resolution{%|%}line counts 4,8,16,20,32,40,50,64,80,100,128,160,200,250,256,400,500, 512
    Supply Voltage{%|%}V 5 +/- 10%
    Supply Current - typical{%|%}mA 20 / 25
    Supply Current - maxium{%|%}mA
    Supply Current - stand-by{%|%}μA
    Rise time{%|%}ns 60
    Fall time{%|%}ns 60
    No-Load Current{%|%}mA
    Max continuous mechanical power (@ 25°C)
    Max continuous Current (A)
    Max Continuous Torque (mNm)
    Max Continuous Torque (oz-in)
    Terminal Resistance{%|%}Ω
    Output Power{%|%}W
    Stall Torque{%|%}oz-in
    Stall Torque{%|%}mNm
    Efficiency{%|%}%
    Speeds up to{%|%}rpm
    Torque up to{%|%}oz-in
    Torque up to{%|%}mNm
    Current up to, thermal limits{%|%}Amp
    Back-EMF Constant{%|%}V/1000 rpm
    Torque Constant{%|%}mNm/A
    Torque Constant{%|%}oz-in/A
    Motor Regulation R/k² (10³/Nms)
    Motor regulation k/R½ (mNm/W)
    Motor regulation k/R½ (oz-in/W)
    Internal resistance - phase to phase (W)
    Line to Line resistance at connectors (Ω)
    Inductance - phase to phase (mH)
    Friction Torque{%|%}oz-in
    Friction Torque{%|%}mNm
    Rotor Inductance{%|%}µH
    Mechanical Time Constant{%|%}ms
    Rotor Inertia{%|%}gcm²
    Rotor Inertia{%|%}gcm²
    Thermal Resistance{%|%}C/W
    Thermal Time Constant{%|%}C/W
    Weight{%|%}oz
    Weight{%|%}g
    Absolute accuracy 2 ph. On, Full step mode (degree)
    Ambient working temperature range (C)
    Ambient working temperature range (F)
    Bearing Type
    Detent Torque, Max (mNm)
    Detent Torque, Max (oz-in)
    Dielectric Withstanding Voltage (VAC)
    Holding Torque, MIN (mNm)
    Holding Torque, MIN (oz-in)
    Inductance per Phase, typ (mH)
    Insulation Resistance at 500 VDC (Mohms)
    Leadwire
    Maximum Coil Temperature (C)
    Maximum Coil Temperature (F)
    Operating Voltage (VDC)
    Rated Current per Phase, 1 Phase ON (A)
    Resistance per Phase, ± 10% (Ohms)
    Rotor Inertia (oz-in-sec²10{%SUP%}-6{%/SUP%})
    Electrical time constant (ms)
    Max motor speed (rpm)
    Ambient storage temperature range (C)
    Ambient storage temperature range (F)
    Ball bearings preload (N)
    Axial static force without shaft support (N)
    Max winding temperature (C)
    Max Winding Temperature (C)
    Max Winding Temperature (F)
    Max winding temperature (F)
    Hall Sensor Elecrical Phasing (degree)
    Typical Housing Material
    Continuous Stall Current (A)
    Peak Torque for 1s (mNm)
    Peak Torque for 1s (oz-in)
    Peak Current (A)
    Max Axial Shaft Load (N)
    Max Axial Shaft Load (oz)
    Max Radial Shaft Load (N)
    Max Radial Shaft Load (oz)
    Shaft Load Max Axial (lb)
    Shaft Load Max Axial (N)
    Shaft Load Max Radial (lb)
    Shaft Load Max Radial (N)
    Length (in)
    Length (mm)
    Steps per Revolution
    Back EMF Amplitude (V/ksteps/s)
    Nominal Phase Current (1 ph. On) (A)
    Nominal Phase Current (2 ph. On) (A)
    Angular Acceleration (nominal current)
    Axial Shaft Play (µm)
    Holding Torque Typical (mNm)
    Holding Torque Typical (oz-in)
    Holding Torque, 1.5x nominal current (mNm)
    Holding Torque, 1.5x nominal current (oz-in)
    Natural Resonance Frequency @nominal current (Hz)
    Power rate (nominal current) (kW/s)
    Radial Shaft Play (µm)
    Max. Force* @ .001" (0.0254 mm) / Step (N)
    Max. Force* @ .001" (0.0254 mm) / Step (oz)
    Max. Force* @ .002" (0.0508 mm) / Step (N)
    Max. Force* @ .002" (0.0508 mm) / Step (oz)
    Max. Force* @ .004"(0.1016 mm) / Step (N)
    Max. Force* @ .004"(0.1016 mm) / Step (oz)
    Stroke Length, Typ{%|%}mm
    Stroke Length, Typ{%|%}in
    Min. Holding Force (Unenergized) @ .0005" (0.0127 mm) / Step{%|%}N
    Min. Holding Force (Unenergized) @ .0005" (0.0127 mm) / Step{%|%}oz
    Min. Holding Force @ 0.001" (0.0254 mm) / Step (Un-energised) (N)
    Min. Holding Force @ 0.001" (0.0254 mm) / Step (Un-energised) (oz)
    Min. Holding Force @ 0.002" (0.0508 mm) / Step (Un-energised) (N)
    Min. Holding Force @ 0.002" (0.0508 mm) / Step (Un-energised) (oz)
    Min. Holding Force (Unenergized) @ 0.003" (0.0762 mm) / Step (Un-energized){%|%}N
    Min. Holding Force (Unenergized) @ 0.003" (0.0762 mm) / Step (Un-energized){%|%}oz
    Min. Holding Force @ 0.004" (0.1016 mm) / Step (Un-energised) (N)
    Min. Holding Force @ 0.004" (0.1016 mm) / Step (Un-energised) (oz)
    Min. Holding Force @ rated current @ .0005" (0.0127 mm) / Step{%|%}N
    Min. Holding Force @ rated current @ .0005" (0.0127 mm) / Step{%|%}oz
    Min. Holding Force @ rated current @ .001" (0.0254 mm) / Step{%|%}N
    Min. Holding Force @ rated current @ .001" (0.0254 mm) / Step{%|%}oz
    Min. Holding Force @ rated current @ .002" (0.058 mm) / Step{%|%}N
    Min. Holding Force @ rated current @ .002" (0.058 mm) / Step{%|%}oz
    Min. Holding Force @ rated current @ .003" (0.0762 mm) / Step{%|%}N
    Min. Holding Force @ rated current @ .003" (0.0762 mm) / Step{%|%}oz
    Min. Holding Force @ rated current @ .004" (0.1016 mm) / Step{%|%}N
    Min. Holding Force @ rated current @ .004" (0.1016 mm) / Step{%|%}oz
    Output signal{%|%}MHz 25 Max
    Direction of rotation ( = / ≠)
    Max. Recommended Input Speed (rpm)
    Number of gear stages
    Electrical phase shift{%|%}degree 90 +/- 45
    Duty cycle{%|%}% 50 +/-15
    Maximum count frequency{%|%}kHz 1
    Maximum speed @ 512 ppr{%|%}10{%SUP%}-7{%/SUP%} x kgm² 37,500
    Maximum speed @ 1024 ppr{%|%}10{%SUP%}-7{%/SUP%} x kgm²
    Operating Temperature Range: Rotor{%|%}°C
    Operating Temperature Range: Motor{%|%}°C -25 to +85
    Operating Temperature Range: Motor{%|%}°F -102 to 95
    Operating Temperature Range: Rotor{%|%}°F
    Code wheel moment of inertia{%|%}10{%SUP%}-7{%/SUP%} x kgm² Not available
    Linear Travel Accuracy
    Input Power (W)
    Input Power (W)
    Stepper Type
    Document Technology Document Type Language File Type
    MR2 drawing Encoder DXF Drawing  
    MR2 Specification Sheet Encoder Specification Page  
    MR2 3D Drawing Encoder 3D  
    Miniature Motors for Automated Solutions (brochure) Literature