ERA 4000 series

    Spécifications techniques

    Scanning head

    AK ERA 4280 graduation period 20 µm

    AK ERA 4480 graduation period 40 µm

    AK ERA 4880 graduation period 80 µm

    Interface

      1 VPP

    Cutoff frequency –3 dB

    350 kHz

    Electrical connection

    Cable 1 m with M23 coupling (12-pin)

    Cable length

    150 m (with HEIDENHAIN cable)

    Voltage supply

    DC 5 V ±0.5 V

    Current consumption

    < 100 mA (without load)

    Vibration 55 to 2000 Hz

    Shock 6 ms

    200 m/s2 (EN 60 068-2-6)

    1000 m/s2 (EN 60 068-2-27)

    Operating temperature

    –10 °C to 80 °C

    Mass Scanning head

    ≈ 20 g; scanning head for protective cover: ≈ 35 g (each without cable)

    Scale drum

    TTR ERA 4200 C graduation period 20 µm

    TTR ERA 4400 C graduation period 40 µm

    TTR ERA 4800 C graduation period 80 µm

    Measuring standard

    Coefficient of expansion

    Steel drum

    αtherm 10.4 · 10–6 K–1

    Signal periods/Interpolation error per signal period1)

    ERA 4200

    12 000/±1.1”

    16 384/±0.8”

    20 000/±0.7”

    28 000/±0.5”

    32 768/±0.4”

    40 000/±0.4”

    52 000/±0.3”

    ERA 4400

    6000/±2.2”

    8192/±1.6”

    10 000/±1.3”

    14 000/±1.0”

    16 384/±0.8”

    20 000/±0.7”

    26 000/±0.5”

    38 000/±0.4”

    44 000/±0.3”

    ERA 4800

    3000/±4.4”

    4096/±3.2”

    5000/±2.6”

    7000/±1.9”

    8192/±1.6”

    10 000/±1.3”

    13 000/±1.0”

    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

    Mech. permissible speed

    10 000 rpm

    8500 rpm

    6250 rpm

    4500 rpm

    4250 rpm

    3250 rpm

    2500 rpm

    1800 rpm

    1500 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

    Permissible axial movement

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

    Protection* EN 60 529

    Complete encoder in mounted condition:

    Without protective cover

    IP00

    With protective cover2) and compressed air

    IP40

    IP40

    IP40

    IP40

    IP40

    IP40

    IP40

    Mass

    Scale drum

    ≈ 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

    Protective cover

    ≈ 0.07 kg

    ≈ 0.1 kg

    ≈ 0.12 kg

    ≈ 0.17 kg

    ≈ 0.22 kg

    ≈ 0.26 kg

    ≈ 0.35 kg

    * Please select when ordering

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

    2) Possible only with ERA 4480; please order protective cover separately