ERA 4000 series

    Specifications

    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

    5 V DC ± 0.5 V

    Current requirement

    < 100 mA (without load)

    Vibration 55 to 2 000 Hz

    Shock 6 ms

    ≤ 200 m/s2 (EN 60 068-2-6)
    ≤ 1 000 m/s2 (EN 60 068-2-27)

    Operating temperature

    –10 °C to 80 °C

    Weight (approx.) 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

    Expansion factor

    Steel drum

    αtherm ≈ 10.5 · 10-6 K-1

    Signal periods/Position 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

    6 000/± 2.2”

    8 192/± 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

    3 000/± 4.4”

    4 096/± 3.2”

    5 000/± 2.6”

    7 000/± 1.9”

    8 192/± 1.6”

    10 000/± 1.3”

    13 000/± 1.0”

    Accuracy of graduation

    ± 5”

    ± 3.7”

    ± 3”

    ± 2.5”

    ± 2”

    Reference marks

    Distance-coded, one upon request

    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

    10 000 min-1

    8 500 min-1

    6 250 min-1

    4 500 min-1

    4 250 min-1

    3 250 min-1

    2 500 min-1

    1 800 min-1

    1 500 min-1

    Moment of inertia of rotor

    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 scanning head)

    Protection* EN 60 529

    Without protective cover

    IP 00

    With protective cover2) and compressed air

    IP 40

    IP 40

    IP 40

    IP 40

    IP 40

    IP 40

    IP 40

    Weight (approx.)

    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

    0.28 kg

    0.26 kg

    0.35 kg

    * Please select when ordering

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

    2) Only with ERA 4480; the protective cover must be ordered separately