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- HEIDENHAIN LIF 48 Exposed Linear Encoder
HEIDENHAIN
HEIDENHAIN LIF 48 Exposed Linear Encoder
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Scale
LIF 401 R
Measuring standard*
Coefficient of linear expansion
SUPRADUR phase grating on Zerodur glass ceramic or glass; grating period: 8 µm
?therm = (0±0.1) · 10–6 K–1 (Zerodur glass ceramic)
?therm 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
