- Specifications
- Documentation
|
Scanning head |
AK ERA 7480 |
|
Interface |
1 VPP |
|
Cutoff frequency –3 dB |
≥ 350 kHz |
|
Electrical connection |
Cable 1 m with M23 coupling (12-pin) |
|
Cable length |
≤ 150 m (with HEIDENHAIN cable) |
|
Voltage supply |
DC 5 V ±0.5 V |
|
Current consumption |
< 100 mA (without load) |
|
Vibration 55 to 2000 Hz Shock 6 ms |
≤ 200 m/s2 (EN 60 068-2-6) ≤ 1000 m/s2 (EN 60 068-2-27) |
|
Operating temperature |
–10 °C to 80 °C |
|
Mass |
≈ 20 g (without cable) |
|
Scale Tape |
MSB ERA 7400 C full circle version MSB ERA 7401 C segment version |
|||
|
Measuring standard Grating period Coefficient of expansion |
Steel scale-tape with METALLUR graduation 40 µm αtherm ≈ 10.5 · 10–6 K–1 |
|||
|
Signal periods1) |
36 000 |
45 000 |
90 000 |
|
|
Accuracy of graduation2) |
±3.9” |
±3.2” |
±1.6” |
|
|
Interpolation error per signal period2) |
±0.4” |
±0.3” |
±0.1” |
|
|
Accuracy of the scale tape |
±3 µm/m of tape length |
|||
|
Reference marks |
Distance-coded |
|||
|
Scale-slot diameter* |
Full circle |
458.62 mm |
573.20 mm |
1146.10 mm |
|
Segment |
≥ 400 mm |
|||
|
Mech. permissible speed |
≤ 250 rpm |
≤ 250 rpm |
≤ 220 rpm |
|
|
Permissible axial movement |
≤ 0.5 mm (scale tape relative to scanning head) |
|||
|
Permissible expansion coefficient of shaft |
αtherm≈9 · 10–6 K–1 to 12 · 10–6 K–1 |
|||
|
Protection EN 60 529 |
Complete encoder in mounted condition: IP00 |
|||
|
Mass |
≈ 30 g/m |
|||
|
* 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 |
||||
