Specifications

LS 487

LS 477

Measuring standard

Coefficient of linear expansion

Glass scale with DIADUR grating, grating period 20 µm

α_therm≈ 8 x 10^-6K^-1(mounting type I / II); with mounting spar: α_therm≈ 9 x 10^-6K^-1

Accuracy grade*

± 5 µm; ± 3 µm

Measuring length ML* in mm

Mounting spar* up to ML 1240 optional, necessary as of ML 1340

70, 120, 170, 220, 270, 320, 370, 420, 470, 520, 570, 620, 670, 720,

770, 820, 920, 1020, 1140, 1240, 1340, 1440, 1540, 1640, 1740, 1840, 2040

Reference marks* LS 4x7

LS 4x7 C

• Selectable with magnets every 50 mm
• 1 reference mark at midpoint of measuring length
• 2 reference marks, each 35 mm (for ML ≤ 1 020) or 45 mm (for ML ≥ 1 140) from the beginning and end of measuring length

Distance-coded

Incremental signals

1 VPP

TTL x 5

TTL x 10

TTL x 20

Integrated interpolation*

Signal period

–

20 µm

5-fold

4 µm

10-fold

2 µm

20-fold

1 µm

Cutoff frequency –3 dB

≥ 160 kHz

–

–

–

Scanning frequency*

Edge separation a

–

100 kHz

≥ 0.5 µs

50 kHz

≥ 1 µs

100 kHz

≥ 0.25 µs

50 kHz

≥ 0.5 µs

25 kHz

≥ 1 µs

50 kHz

≥ 0.25 µs

25 kHz

≥ 0.5 µs

Measuring step

0.5 µm1)

1 µm2)

0.5 µm2)

0.25 µm2)

Electrical connection

Separate adapter cable (1 m/3 m/6 m/9 m) connectable to mounting block

Cable length3)

≤ 150 m

≤ 100 m

Power supply without load

5 V DC ± 5 %/< 120 mA

5 V DC ± 5 %/< 140 mA

Traversing speed

≤ 120 m/min

≤ 120 m/min

≤ 60 m/min

≤ 120 m/min

≤ 60 m/min

≤ 30 m/min

≤ 60 m/min

≤ 30 m/min

Required moving force

≤ 5 N

Vibration 55 Hz to 2 000 Hz

Shock 11 ms

Acceleration

Without mounting spar: ≤ 100 m/s²(EN 60 068-2-6)
With mounting spar and cable outlet at right: ≤ 200 m/s², left: 100 m/s²(EN 60 068-2-6)

≤ 300 m/s²(EN 60 068-2-27)

≤ 100 m/s²in measuring direction

Operating temperature

0 °C to 50 °C

Protection EN 60 529

IP 53 when installed according to mounting instructions and information; IP 64 with compressed air from DA 400

Weight

0.4 kg + 0.5 kg/m measuring length

*Please indicate when ordering
1) Recommended for position measurement

2) After 4-fold evaluation in the subsequent electronics
3) With HEIDENHAIN cable