ERA 4000 series

    Specifications

    Scanning head

    AK ERA 4280 with 20 µm graduation period

    AK ERA 4480 with 40 µm graduation period

    AK ERA 4880 with 80 µm graduation period

    Interface

      1 VPP, HSP

    Cutoff frequency –3 dB

    1 MHz

    Electrical connection

    1 m or 3 m cable
    12-pin M12 coupling or 12-pin M23 coupling or 15-pin D-sub connector

    Cable length

    150 m (with HEIDENHAIN cable)

    Supply voltage

    DC 5 V ±0.5 V

    Current consumption

    < 130 mA (without load)

    Vibration 55 Hz to 2000 Hz

    Shock 11 ms

    6 ms

    With mechanical fault exclusion: 200 m/s2 (EN 60068-2-6)

    Without mechanical fault exclusion: 200 m/s2 (EN 60068-2-6)

    With mechanical fault exclusion: 200 m/s2 (EN 60068-2-27)

    Without mechanical fault exclusion: 1000 m/s2 (EN 60068-2-27)

    Operating temperature

    –10 °C to 70 °C

    Relative air humidity

    93% (at 40 °C/4d as per EN 60068-2-78); condensation excluded

    Protection

    IP40

    Mass

    Scanning head

    Cable

    Coupling (M12)

    Coupling (M23)

    D-sub connector

    20 g (without cable)

    20 g/m

    15 g

    50 g

    32 g

    Scale drum
    with centering collar

    TTR ERA 4200 C with 20 µm graduation period

    TTR ERA 4400 C with 40 µm graduation period

    TTR ERA 4800 C with 80 µm graduation period

    Measuring standard

    Coefficient of expansion

    Steel drum

    therm 10.4 · 10–6 K–1

    Signal periods/interpolation error per signal period1)

    ERA 4200

    16 384/±0.24”

    20 000/±0.19”

    28 000/±0.14”

    32 768/±0.12”

    40 000/±0.10”

    52 000/±0.07”

    ERA 4400

    6000/±1.08”

    8192/±0.79”

    10 000/±0.65”

    14 000/±0.46”

    16 384/±0.40”

    20 000/±0.32”

    26 000/±025”

    38 000/±0.17”

    44 000/±0.15”

    ERA 4800

    3000/±2.16”

    4096/±1.58”

    5000/±1.30”

    7000/±0.93”

    8192/±0.79”

    10 000/±0.65”

    13 000/±0.50”

    Accuracy of graduation

    ±5”

    ±3.7”

    ±3”

    ±2.5”

    ±2”

    Reference marks

    Distance-coded or one

    Drum inside diameter*

    40 mm

    70 mm

    80 mm

    120 mm

    150 mm

    180 mm

    270 mm

    425 mm

    512 mm

    Drum outside diameter*

    76.75 mm

    104.63 mm

    127.64 mm

    178.55 mm

    208.89 mm

    254.93 mm

    331.31 mm

    484.07 mm

    560.46 mm

    Mechanically permissible speed

    with mechanical fault exclusion

    10 000 rpm

    8500 rpm

    6250 rpm

    4500 rpm

    4250 rpm

    3250 rpm

    2500 rpm

    1800 rpm

    1500 rpm

    without mechanical fault exclusion

    20 000 rpm

    15 000 rpm

    12 250 rpm

    8750 rpm

    7500 rpm

    6250 rpm

    4750 rpm

    3250 rpm

    2750 rpm

    Moment of inertia

    0.27 · 10–3 kgm2

    0.81 · 10–3 kgm2

    1.9 · 10–3 kgm2

    7.1 · 10–3 kgm2

    12 · 10–3 kgm2

    28 · 10–3 kgm2

    59 · 10–3 kgm2

    195 · 10–3 kgm2

    258 · 10–3 kgm2

    Maximum angular acceleration
    with mechanical fault exclusion

    20 000 rad/s2

    14 000 rad/s2

    6600 rad/s2

    2700 rad/s2

    1800 rad/s2

    1000 rad/s2

    1300 rad/s2

    900 rad/s2

    1200 rad/s2

    Permissible axial movement

    ±0.5 mm (scale drum relative to the scanning head)

    Protection EN 60529

    Complete encoder in mounted condition: IP00

    Mass

    0.28 kg

    0.41 kg

    0.68 kg

    1.2 kg

    1.5 kg

    2.3 kg

    2.6 kg

    3.8 kg

    3.6 kg

    * Please select when ordering

    1) The interpolation error within one signal period and the accuracy of the graduation together yield the encoder-specific error;
    for additional error from mounting and bearing of the measured shaft, see Measuring accuracy

    Scale drum with three-point centering

    TTR ERA 4202C with 20 µm graduation period

    Measuring standard

    Coefficient of expansion

    Steel drum

    therm 10.4 · 10–6 K–1

    Signal periods

    16 384

    20 000

    28 000

    32 768

    40 000

    52 000

    Accuracy of graduation

    ±3”

    ±2.5”

    ±2”

    ±1.9”

    ±1.8”

    ±1.7”

    Interpolation error per signal period1)

    ±0.24”

    ±0.19”

    ±0.14”

    ±0.12”

    ±0.10”

    ±0.07”

    Reference marks

    Distance-coded or one

    Drum inside diameter*

    70 mm

    80 mm

    120 mm/
    150 mm

    150 mm/
    185 mm

    180 mm/
    210 mm

    270 mm

    Drum outside diameter*

    104.63 mm

    127.64 mm

    178.55 mm

    208.89 mm

    254.93 mm

    331.31 mm

    Mech. permissible speed

    15 000 rpm

    12 250 rpm

    8750 rpm

    7500 rpm

    6250 rpm

    4750 rpm

    Moment of inertia

    0.83 · 10–3 kgm2

    2.0 · 10–3 kgm2

    7.1/4.5 · 10–3 kgm2

    12/6.4 · 10–3 kgm2

    28/20 · 10–3 kgm2

    59 · 10–3 kgm2

    Permissible axial movement

    ±0.5 mm (scale drum relative to the scanning head)

    Protection EN 60529

    Complete encoder in mounted condition: IP00

    Mass

    0.42 kg

    0.69 kg

    1.2 kg/ 0.66 kg

    1.5 kg/ 0.66 kg

    2.3 kg/ 1.5 kg

    2.6 kg

    * Please select when ordering

    1) The interpolation error within one signal period and the accuracy of the graduation together yield the encoder-specific error; for additional error from mounting and bearing of the measured shaft, see Measuring accuracy