ERA 7000 series

    Spécifications techniques

    Scanning head

    AK ERA 7480

    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

    ≈ 20 g (without cable)

    Scale Tape

    MSB ERA 7400 C full circle version

    MSB ERA 7401 C segment version

    Measuring standard

    Grating period

    Coefficient of expansion

    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 graduation2)

    ±3.9”

    ±3.2”

    ±1.6”

    Interpolation 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

    458.62 mm

    573.20 mm

    1146.10 mm

    Segment

    400 mm

    Mech. permissible speed

    250 rpm

    250 rpm

    220 rpm

    Permissible axial movement

    0.5 mm (scale tape relative to scanning head)

    Permissible expansion coefficient of shaft

    αtherm9 · 10–6 K–1 to 12 · 10–6 K–1

    Protection EN 60 529

    Complete encoder in mounted condition: IP00

    Mass

    ≈ 30 g/m

    * Please select when ordering, additional diameters up to max. 3 m upon request

    1) Validity for full circle version; for segment versions depending on the mating diameter and the tape length

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