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PP 281 R
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Measuring standard
Coefficient of linear expansion
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Two-coordinate TITANID phase grating on glass; grating period 8 ?m
αtherm ? 8 · 10–6 K–1
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Accuracy grade
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±2 ?m
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Measuring range
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68 mm x 68 mm,
other measuring ranges upon request
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Reference marks1)
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One reference mark in each axis, 3 mm after beginning of measuring length
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Interface
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1 VPP
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Signal period
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4 ?m
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Cutoff frequency –3 dB
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≥ 300 kHz
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Traversing speed
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≤ 72 m/min
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Interpolation error
Position noise RMS
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±12 nm
2 nm (450 kHz)2)
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Electrical connection
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0.5 m cable with 15-pin D-sub connector (male); interface electronics in the connector
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Cable length
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See interface description, but ≤ 30 m (with HEIDENHAIN cable)
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Voltage supply
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DC 5 V ±0.25 V
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Current consumption
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< 185 mA per axis
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Vibration 55 Hz to 2000 Hz
Shock 11 ms
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≤ 80 m/s2 (EN 60 068-2-6)
≤ 100 m/s2 (EN 60 068-2-27)
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Operating temperature
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0 °C to 50 °C
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Mass Scanning head
Grid plate
Connecting cable
Connector
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170 g (without cable)
75 g
37 g/m
140 g
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1) The reference mark signal deviates in its zero crossovers from the interface specification (see Mounting Instructions)
2) With –3 dB cutoff frequency of the subsequent electronics
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