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