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LIF 481 / LIF 471

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).