Scanning head
AK ERA 4280
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
? 100 m/s2 (EN 60 068-2-6)
? 500 m/s2 (EN 60 068-2-27)
Operating temperature
–10 °C to 80 °C
Mass
? 20 g (without cable)
Scale drum
TTR ERA 4202 C
Measuring standard
Grating period
Coefficient of expansion
Steel drum
20 µm
?therm ? 10.4 · 10–6 K–1
Signal periods
12 000
16 384
20 000
28 000
32 768
40 000
52 000
Accuracy of graduation
±4”
±3”
±2.5”
±2”
±1.9”
±1.8”
±1.7”
Interpolation error per signal period1)
±1.1”
±0.8”
±0.7”
±0.5”
±0.4”
±0.4”
±0.3”
Reference marks
Distance-coded
Drum inside diameter*
40 mm
70 mm
80 mm
120 mm/
150 mm
150 mm/
185 mm
180 mm/
210 mm
270 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
Mech. permissible speed
10 000 rpm
8500 rpm
6250 rpm
4500 rpm
4250 rpm
3250 rpm
2500 rpm
Moment of inertia
0.28 · 10-3 kgm2
0.83 · 10-3 kgm2
2.0 · 10-3 kgm2
7.1/4.5 · 10–3 kgm2
12/6.5 · 10–3 kgm2
28/20 · 10–3 kgm2
59 · 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: IP00
Mass
? 0.30 kg
? 0.42 kg
? 0.69 kg
? 1.2 kg/ 0.66 kg
? 1.5 kg/ 0.66 kg
? 2.3 kg/ 1.5 kg
? 2.6 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
