LIF 471/481

    Specifications

    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

    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

    Weight

    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

    Position detection

    Homing signal and limit signal; TTL output signals (without line driver)

    Electrical connection*

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

    Cable length

    See Interface Description, but
    incremental: 30 m; homing, limit: 10 m; (with HEIDENHAIN cable)

    Voltage supply

    5 V DC ± 0.25 V

    5 V DC ± 0.25 V

    Current requirement

    < 175 mA

    < 180 mA (without load)

    Vibration 55 to 2 000 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 (32 °F to 122 °F)

    Weight Scanning head*

    Connecting cable

    Connector

    For scale of Zerodur glass ceramic: 25 g

    For scale of glass: 9 g

    (each without cable)

    38 g/m

    140 g

    * Please select when ordering

    1) At the corresponding cutoff or scanning frequency

    Versions available for high vacuum LIP 481 V (see Product Information).