PP 281

    Spécifications techniques

    PP 281 R

    Measuring standard

    Coefficient of linear expansion

    Two-coordinate TITANID phase grating on glass; grating period 8 µm

    αtherm  8 · 10–6 K–1

    Accuracy grade

    ±2 µm

    Measuring range

    68 mm x 68 mm,

    other measuring ranges upon request

    Reference marks1)

    One reference mark in each axis, 3 mm after beginning of measuring length

    Interface

      1 VPP

    Signal period

    4 µm

    Cutoff frequency –3 dB

    300 kHz

    Traversing speed

    72 m/min

    Interpolation error

    Position noise RMS

    ±12 nm

    2 nm (450 kHz)2)

    Electrical connection

    0.5 m cable with 15-pin D-sub connector (male); interface electronics in the connector

    Cable length

    See interface description, but 30 m (with HEIDENHAIN cable)

    Voltage supply

    DC 5 V ±0.25 V

    Current consumption

    < 185 mA per axis

    Vibration 55 Hz to 2000 Hz

    Shock 11 ms

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

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

    Operating temperature

    0 °C to 50 °C

    Mass Scanning head

    Grid plate

    Connecting cable

    Connector

    170 g (without cable)

    75 g

    37 g/m

    140 g

    1) The reference mark signal deviates in its zero crossovers from the interface specification (see Mounting Instructions)

    2) With –3 dB cutoff frequency of the subsequent electronics