|
Scanning head |
AK ERA 4280 graduation period 20 µm AK ERA 4480 graduation period 40 µm AK ERA 4880 graduation period 80 µm |
|
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 Scanning head |
≈ 20 g; scanning head for protective cover: ≈ 35 g (each without cable) |
|
Scale drum |
TTR ERA 4200 C graduation period 20 µm TTR ERA 4400 C graduation period 40 µm TTR ERA 4800 C graduation period 80 µm |
|||||||||
|
Measuring standard Coefficient of expansion |
Steel drum αtherm ≈ 10.4 · 10–6 K–1 |
|||||||||
|
Signal periods/Interpolation error per signal period1) |
ERA 4200 |
12 000/±1.1” |
16 384/±0.8” |
20 000/±0.7” |
28 000/±0.5” |
32 768/±0.4” |
40 000/±0.4” |
52 000/±0.3” |
– |
– |
|
ERA 4400 |
6000/±2.2” |
8192/±1.6” |
10 000/±1.3” |
14 000/±1.0” |
16 384/±0.8” |
20 000/±0.7” |
26 000/±0.5” |
38 000/±0.4” |
44 000/±0.3” |
|
|
ERA 4800 |
3000/±4.4” |
4096/±3.2” |
5000/±2.6” |
7000/±1.9” |
8192/±1.6” |
10 000/±1.3” |
13 000/±1.0” |
– |
– |
|
|
Accuracy of graduation |
±5” |
±3.7” |
±3” |
±2.5” |
±2” |
|||||
|
Reference marks |
Distance-coded or one |
|||||||||
|
Drum inside diameter* |
40 mm |
70 mm |
80 mm |
120 mm |
150 mm |
180 mm |
270 mm |
425 mm |
512 mm |
|
|
Drum outside diameter* |
76.75 mm |
104.63 mm |
127.64 mm |
178.55 mm |
208.89 mm |
254.93 mm |
331.31 mm |
484.07 mm |
560.46 mm |
|
|
Mech. permissible speed |
10 000 rpm |
8500 rpm |
6250 rpm |
4500 rpm |
4250 rpm |
3250 rpm |
2500 rpm |
1800 rpm |
1500 rpm |
|
|
Moment of inertia |
0.27 · 10-3 kgm2 |
0.81 · 10-3 kgm2 |
1.9 · 10-3 kgm2 |
7.1 · 10-3 kgm2 |
12 · 10-3 kgm2 |
28 · 10-3 kgm2 |
59 · 10-3 kgm2 |
195 · 10-3 kgm2 |
258 · 10-3 kgm2 |
|
|
Permissible axial movement |
≤ ±0.5 mm (scale drum relative to the scanning head) |
|||||||||
|
Protection* EN 60 529 |
Complete encoder in mounted condition: |
|||||||||
|
Without protective cover |
IP00 |
|||||||||
|
With protective cover2) and compressed air |
IP40 |
IP40 |
IP40 |
IP40 |
IP40 |
IP40 |
IP40 |
– |
||
|
Mass |
Scale drum |
≈ 0.28 kg |
≈ 0.41 kg |
≈ 0.68 kg |
≈ 1.2 kg |
≈ 1.5 kg |
≈ 2.3 kg |
≈ 2.6 kg |
≈ 3.8 kg |
≈ 3.6 kg |
|
Protective cover |
≈ 0.07 kg |
≈ 0.1 kg |
≈ 0.12 kg |
≈ 0.17 kg |
≈ 0.22 kg |
≈ 0.26 kg |
≈ 0.35 kg |
– |
||
|
* Please select when ordering 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 2) Possible only with ERA 4480; please order protective cover separately |
||||||||||