HEIDENHAIN LS 177 Sealed Linear Encoder

Specifications

LS 187

LS 177

Measuring standard

Coefficient of linear expansion

Glass scale with DIADUR grating, grating period 20 µm

?therm  8 x 10–6 K–1

Accuracy grade*

±5 µm; ±3 µm

Measuring length ML* in mm

140 240 340 440 540 640 740 840 940 1040 1140 1240 1340 1440

1540 1640 1740 1840 2040 2240 2440 2640 2840 3040

Reference marks* LS 1x7

LS 1x7 C

Selectable with magnets every 50 mm, standard setting: 1 reference mark in the center

Distance-coded

Interface

  1 VPP

? TTL

Integrated interpolation*

Signal period

–

20 µm

5-fold

–

10-fold

–

20-fold

–

Diagnostics interface

Analog

–

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

Depends on interpolation

1 µm1)

0.5 µm1)

0.25 µm1)

Electrical connection

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

Cable length2)

? 150 m

? 100 m

Voltage supply
without load

DC 5 V ±0.25 V/< 120 mA

DC 5 V ±0.25 V/< 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

? 4 N

Vibration 55 Hz to 2000 Hz

Shock 11 ms

Acceleration

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

? 400 m/s2 (EN 60 068-2-27)

? 60 m/s2 in measuring direction

Operating temperature

0 °C to 50 °C

Protection EN 60 529

IP53 when mounted according to the instructions and mounting information

IP64 if compressed air is connected via DA 400

Mass

0.4 kg + 2.3 kg/m measuring length

* Please select when ordering

1) After 4-fold evaluation in the subsequent electronics

2) With HEIDENHAIN cable