LIF 471/481

    Spécifications techniques

    Linear scale

    LIF 401 R

    Measuring standard*

    Coefficient of linear expansion

    SUPRADUR phase grating on Zerodur glass ceramic or glass; grating period 8 µm

    αtherm = (0±0.1) · 10–6 K–1 (Zerodur glass ceramic)

    αtherm  8 · 10–6 K–1 (glass)

    Accuracy grade*

    ±1 µm (only for Zerodur glass ceramic), ±3 µm

    Baseline error

    ±0.225 µm/5 mm

    Measuring length ML* in mm

    70 120 170 220 270 320 370 420 470 520 570 620 670

    720 770 820 870 920 970 1020

    Reference marks

    One at midpoint of measuring length

    Mass

    0.8 g + 0.08 g/mm measuring length

    Scanning head

    AK LIF 48

    AK LIF 47

    Interface

      1 VPP

    TTL

    Integrated interpolation*

    Signal period

    4 µm

    5-fold

    0.8 µm

    10-fold

    0.4 µm

    20-fold

    0.2 µm

    50-fold

    0.08 µm

    100-fold

    0.04 µm

    Cutoff frequency –3 dB

    –6 dB

    300 kHz

    420 kHz

    Scanning frequency*

    500 kHz

    250 kHz

    125 kHz

    250 kHz

    125 kHz

    62.5 kHz

    250 kHz

    125 kHz

    62.5 kHz

    100 kHz

    50 kHz

    25 kHz

    50 kHz

    25 kHz

    12.5 kHz

    Edge separation a1)

    0.080 µs

    0.175 µs

    0.370 µs

    0.080 µs

    0.175 µs

    0.370 µs

    0.040 µs

    0.080 µs

    0.175 µs

    0.040 µs

    0.080 µs

    0.175 µs

    0.040 µs

    0.080 µs

    0.175 µs

    Traversing speed1)

    72 m/min

    100 m/min

    120 m/min

    60 m/min

    30 m/min

    60 m/min

    30 m/min

    15 m/min

    60 m/min

    30 m/min

    15 m/min

    24 m/min

    12 m/min

    6 m/min

    12 m/min

    6 m/min

    3 m/min

    Interpolation error

    Position noise RMS

    ±12 nm

    2 nm (450 kHz)2)

    Electrical connection*

    Cable, 0.5 m, 1 m, 2 m or 3 m with 15-pin D-sub connector (male); interface electronics in the connector

    Cable length

    See interface description, however
    Incremental: 30 m; homing, limit: 10 m; (with HEIDENHAIN cable)

    Voltage supply

    DC 5 V ±0.25 V

    Current consumption

    < 175 mA

    < 180 mA (without load)

    Vibration 55 Hz to 2000 Hz

    Shock 11 ms

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

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

    Operating temperature

    0 °C to 50 °C

    Mass Scanning head*

    Connecting cable

    Connector

    For Zerodur glass ceramic scale: 25 g

    For glass scale: 9 g

    38 g/m

    140 g

    * Please select when ordering

    1) At a corresponding cutoff or scanning frequency

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