HEIDENHAIN ERA 4880 Modular Angle Encoder With Optical Scanning

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

?therm ? 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