Incremental encoders
DFS2x

DFS20A-A1B1F000250
1104820
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    • Performance
      Pulses per revolution250
      Measuring step± 90° electric/pulses per revolution
      Measuring step deviation± 0.008° pulses 100 ... 10,000
      Error limits± 0.03°
    • Interfaces
      Communication interfaceIncremental
      Communication Interface detailHTL / Push pull
      Number of signal channels6-channel
      Initialization time40 ms 1)
      Output frequency820 kHz
      Load current30 mA
      Power consumption0.7 W (without load)
      • 1) Valid positional data can be read once this time has elapsed.
    • Electrical data
      Connection typeMale connector, MS, 6-pin, radial 1)
      Supply voltage8 ... 30 V
      Reference signal, number1
      Reference signal, position180°, electric, gated with A
      Reverse polarity protection
      Short-circuit protection of the outputs2)
      MTTFd: mean time to dangerous failure330 years (EN ISO 13849-1) 3)
      • 1) The Zero-Set function is not available with 6-pin MS connector or M12 connector options.
      • 2) Short-circuit opposite to another channel or GND permissable for maximum 30 s.
      • 3) This product is a standard product and does not constitute a safety component as defined in the Machinery Directive. Calculation based on nominal load of components, average ambient temperature 40°C, frequency of use 8760 h/a. All electronic failures are considered hazardous. For more information, see document no. 8015532.
    • Mechanical data
      Mechanical designSolid shaft, Square flange
      Shaft diameter1/4"
      Shaft length16 mm
      Weight+ 0.4 kg 1)
      Shaft materialStainless steel 1,4305
      Flange materialAluminum
      Housing materialAluminum
      Start up torque0.5 Ncm (+20 °C)
      Operating torque0.3 Ncm (+20 °C)
      Permissible shaft loading radial/axial

      80 N (radial)

      40 N (axial)

      Operating speed≤ 9,000 min⁻¹
      Moment of inertia of the rotor15 gcm²
      Bearing lifetime3.6 x 109 revolutions
      Angular acceleration≤ 500,000 rad/s²
      • 1) Relates to encoders with male connector MS.
    • Ambient data
      EMCAccording to EN 61000-6-2 and EN 61000-6-3
      Enclosure rating

      IP65, shaft side (according to IEC 60529)

      IP67, housing side (according to IEC 60529)

      Permissible relative humidity90 % (Condensation not permitted)
      Operating temperature range–30 °C ... +85 °C
      Storage temperature range–40 °C ... +100 °C, without package
      Resistance to shocks100 g, 11 ms (according to EN 60068-2-27)
      Resistance to vibration30 g, 10 Hz ... 2,000 Hz (according to EN 60068-2-6)
    • Classifications
      ECl@ss 5.027270501
      ECl@ss 5.1.427270501
      ECl@ss 6.027270590
      ECl@ss 6.227270590
      ECl@ss 7.027270501
      ECl@ss 8.027270501
      ECl@ss 8.127270501
      ECl@ss 9.027270501
      ECl@ss 10.027270501
      ECl@ss 11.027270501
      ETIM 5.0EC001486
      ETIM 6.0EC001486
      ETIM 7.0EC001486
      ETIM 8.0EC001486
      UNSPSC 16.090141112113

    Technical drawings

    DFS20A-A1B1F000250
    Dimensional drawing DFS20 square flange mount, radial connector outlet M12 and MS, cable outlet
    DFS20A-A1B1F000250
    PIN assignment View of MS male device connector on encoder
    DFS20A-A1B1F000250
    maximum revolution range
    DFS20A-A1B1F000250
    Signal outputs Signal Outputs with Counter Clock-wise Counting Direction Option Selected (B leads A for clock-wise rotation). Complement signals AN, BN and ZN are not shown.
    DFS20A-A1B1F000250
    Signal outputs Signal Outputs with Clock-wise Counting Direction Option Selected (A leads B for clock-wise rotation). Complement signals AN, BN and ZN are not shown.
    DFS20A-A1B1F000250
    maximum revolution range
    DFS20A-A1B1F000250
    Signal outputs Signal Outputs with Counter Clock-wise Counting Direction Option Selected (B leads A for clock-wise rotation). Complement signals AN, BN and ZN are not shown.
    DFS20A-A1B1F000250
    Signal outputs Signal Outputs with Clock-wise Counting Direction Option Selected (A leads B for clock-wise rotation). Complement signals AN, BN and ZN are not shown.
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