- Specifications
- Documentation
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Scanning head |
AK ERA 8480 |
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Interface |
1 VPP |
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Cutoff frequency –3 dB |
≥ 350 kHz |
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Electrical connection |
Cable 1 m with M23 coupling (12-pin) |
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Cable length |
≤ 150 m (with HEIDENHAIN cable) |
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Voltage supply |
DC 5 V ±0.5 V |
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Current consumption |
< 100 mA (without load) |
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Vibration 55 to 2000 Hz Shock 6 ms |
≤ 200 m/s2 (EN 60 068-2-6) ≤ 1000 m/s2 (EN 60 068-2-27) |
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Operating temperature |
–10 °C to 80 °C |
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Mass |
≈ 20 g (without cable) |
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Scale Tape |
MSB ERA 8400 C full circle version MSB ERA 8401 C segment version with tensioning elements MSB ERA 8402 C segment version without tensioning elements |
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Measuring standard Grating period Coefficient of expansion |
Steel scale-tape with METALLUR graduation 40 µm αtherm ≈ 10.5 · 10–6 K–1 |
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Signal periods1) |
36 000 |
45 000 |
90 000 |
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Accuracy of graduation2) |
±4.7” |
±3.9” |
±1.9” |
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Interpolation error per signal period2) |
±0.4” |
±0.3” |
±0.1” |
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Accuracy of the scale tape |
±3 µm/m of tape length |
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Reference marks |
Distance-coded |
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Scale-slot diameter* |
Full circle |
458.11 mm |
572.72 mm |
1145.73 mm |
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Segment |
≥ 400 mm |
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Mech. permissible speed |
≤ 50 rpm |
≤ 50 rpm |
≤ 45 rpm |
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Permissible axial movement |
≤ 0.5 mm (scale tape relative to scanning head) |
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Permissible expansion coefficient of shaft |
αtherm≈9 · 10–6 K–1 to 12 · 10–6 K–1 |
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Protection EN 60 529 |
Complete encoder in mounted condition: IP00 |
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Mass |
≈ 30 g/m |
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* Please select when ordering, additional diameters up to max. 3 m upon request 1) Validity for full circle version; for segment versions depending on the mating diameter and the tape length 2) Accuracy of the graduation and interpolation error within one signal period result in the encoder-specific error; for additional error from mounting and bearing of the measured shaft, see Measuring accuracy |
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