HEIDENHAIN PP 281 R Exposed Linear Encoder
HEIDENHAIN
Product number: PP 281 R
Producer: HEIDENHAIN
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Datasheets for HEIDENHAIN PP 281 R Exposed Linear Encoder
Description for HEIDENHAIN PP 281 R Exposed Linear Encoder
Measuring standard Coefficient of linear expansion Two-coordinate TITANID phase grating on glass; grating period 8 µm αtherm 8 x 10–6 K–1 Accuracy grade ±2 µm Measuring range 68 mm x 68 mm, other measuring ranges upon request Reference marks1) One reference mark in each axis, 3 mm after beginning of measuring length Interface 1 VPP Signal period 4 µm Cutoff frequency –3 dB ≥ 300 kHz Traversing speed ≤ 72 m/min Interpolation error Position noise RMS ±12 nm3) 2 nm (450 kHz2)) Electrical connection 0.5 m cable with 15-pin D-sub connector (male); interface electronics in connector Cable length See interface description, but ≤ 30 m (with HEIDENHAIN cable) Power supply DC 5 V ±0.25 V Current consumption < 185 mA per axis Vibration 55 Hz to 2000 Hz Shock 11 ms ≤ 80 m/s2 (EN 60068-2-6) ≤ 100 m/s2 (EN 60068-2-27) Operating temperature 0 °C to 50 °C Mass Scanning head Grid plate Connecting cable Connector 170 g (without cable) 75 g 37 g/m 140 g 1) The reference mark signal deviates in its zero crossovers from the interface specification (see Mounting Instructions) 2) –3 dB cutoff frequency of the subsequent electronics 3) With HEIDENHAIN interface electronics, e.g. EIB 741
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