LIF 471/481

    Specifications

    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 of up to a measuring length of 1020 mm), ±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 1140 1240 1340 1440 1540 1640

    Reference marks

    One at midpoint of measuring length

    Mass

    0.8 g + 0.08 g/mm measuring length

    Scanning head

    LIF 48

    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

    1 MHz

    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 a

    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)

    240 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

    RMS position noise

    ±12 nm

    0.6 nm (1 MHz2))

    Electrical connection*

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

    Cable length

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

    Supply voltage

    DC 5 V ±0.25 V

    Current consumption

    < 150 mA

    < 165 mA (without load)

    Vibration 55 Hz to 2000 Hz

    Shock 11 ms

    400 m/s2 (EN 60068-2-6)

    500 m/s2 (EN 60068-2-27)

    Operating temperature

    0 °C to 50 °C

    Mass Scanning head*

    Cable

    Connector

    For scale made of Zerodur glass ceramic: 25 g

    For scale made of glass: 9 g

    38 g/m

    75 g

    * Please select when ordering

    1) With TTL: maximum traversing speed during referencing: 9.6 m/min (40 kHz)

    2) –3 dB cutoff frequency of the subsequent electronics