ERA 8000

    Spécifications techniques

    Scanning head

    AK ERA 8480

    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 ± 0.25 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.)

    20 g (without cable)

    Scale tape

    MSB ERA 8400 C full-circle version

    MSB ERA 8401 C segment version with tensioning elements

    MSB ERA 8402 C segment version without tensioning elements

    Measuring standard

    Grating period

    Expansion factor

    Steel scale-tape with METALLUR graduation

    40 µm

    αtherm ≈ 10.5 · 10-6 K-1

    Signal periods1)

    36 000

    45 000

    90 000

    Accuracy of the graduation2)

    ± 4.7”

    ± 3.9”

    ± 1.9”

    Position error per signal period2)

    ± 0.4”

    ± 0.3”

    ± 0.1”

    Accuracy of the scale tape

    ± 3 µm/m of tape length

    Reference marks

    Distance-coded

    Scale-slot diameter*

    Full circle

    458.11 mm

    572.72 mm

    1145.73 mm

    Segment

    ≥ 400 mm

    Mech. permissible speed

    ≤ 50 min-1

    ≤ 50 min-1

    ≤ 45 min-1

    Perm. axial movement

    ≤ 0.5 mm (scale tape relative to scanning head)

    Permissible expansion coefficient of shaft

    αtherm ≈ 9 · 10-6 K-1 to 12 · 10-6 K-1

    Protection EN 60 529

    IP 00

    Weight (approx.)

    30 g/m

    * Please select when ordering

    1) Applies to full-circle version; for segment versions depends on mating diameter and tape length

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

    Other diameters and higher speeds available on request