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Scanning head |
AK ERP 4080 |
AK ERP 8080 |
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Interface |
1 VPP |
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Cutoff frequency –3 dB |
≥ 250 kHz |
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Electrical connection |
Cable 1 m, with D-sub connector (15-pin) |
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Cable length |
≤ 30 m (with HEIDENHAIN cable) |
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Voltage supply |
DC 5 V ±0.25 V |
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Current consumption |
≤ 150 mA (without load) |
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Laser |
Scanning head and graduated disk mounted: Class 1 Scanning head not mounted: Class 3B Laser diode used: Class 3B |
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Vibration 55 to 2000 Hz Shock 6 ms |
≤ 50 m/s2 (EN 60 068-2-6) ≤ 500 m/s2 (EN 60 068-2-27) |
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Operating temperature |
15 °C to 40 °C |
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Mass |
≈ 33 g (without cable) |
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Circular scale |
TKN ERP 4000 (scale) |
TKN ERP 8000 (scale) |
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Measuring standard |
Phase grating on glass |
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Signal periods |
131 072 |
360 000 |
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Accuracy of graduation |
±2” |
±1” |
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Interpolation error per signal period1) |
±0.1” |
±0.05” |
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Reference marks |
None |
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Hub inside diameter |
8 mm |
50 mm |
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Mech. permissible speed |
≤ 300 rpm |
≤ 100 rpm |
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Moment of inertia |
5 · 10-6 kgm2 |
250 · 10-6 kgm2 |
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Permissible axial motion of measured shaft |
≤ ±0.01 mm (incl. wobble) |
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Protection EN 60 529 |
Complete encoder in mounted condition: IP00 (for clean room applications) |
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Mass |
≈ 36 g |
≈ 180 g |
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1) Interpolation error within one signal period and the accuracy of the graduation together result in the encoder-specific error; for additional error from mounting and bearing of the measured shaft, see Measuring accuracy |
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