for numerically controlled machine tools: LS 400 series

Specifications

Specifications	LS 487	LS 477
Measuring standard Coefficient of linear expansion	Glass scale with DIADUR grating, grating period 20 µm αtherm 8 x 10–6 K–1 (mounting type I/II); with mounting spar: αtherm 9 x 10–6 K–1 (mounting type III)
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 • One reference mark at midpoint of measuring length • Two reference marks, each 35 mm (for ML ≤ 1 020 mm) or 45 mm (for ML ≥ 1 140 mm) from the beginning and end of the measuring length 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	≤ 5 N
Vibration 55 Hz to 2000 Hz Shock 11 ms Acceleration	Without mounting spar: ≤ 100 m/s2 (EN 60 068-2-6) With mounting spar, cable outlet at right: ≤ 200 m/s2, links: 100 m/s2 (EN 60 068-2-6) ≤ 300 m/s2 (EN 60 068-2-27) ≤ 100 m/s2 in measuring direction
Operating temperature	0 °C to 50 °C
Protection EN 60 529	IP53 when installed according to mounting instructions and information; IP64 with compressed air from DA 400
Mass	0.4 kg + 0.5 kg/m measuring length
* Please select when ordering 1) After 4-fold evaluation in the subsequent electronics 2) With HEIDENHAIN cable