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ERA 4282 C

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

5 V DC ± 0.5 V

Current requirement

< 100 mA (without load)

Vibration 55 to 2 000 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

Weight (approx.)

20 g (without cable)

Scale drum

TTR ERA 4202 C

Measuring standard

Grating period

Expansion factor

Steel drum

20 µm

αtherm ≈ 10.5 · 10-6 K-1

Signal periods

12 000

16 384

20 000

28 000

32 768

40 000

32 768

40 000

52 000

Accuracy of graduation

± 4”

± 3”

± 2.5”

± 2”

± 1.9”

± 1.8”

± 1.9”

± 1.8”

± 1.7”

Position error per signal period1)

± 1.1”

± 0.8”

± 0.7”

± 0.5”

± 0.4”

± 0.4”

± 0.4”

± 0.4”

± 0.3”

Reference marks

Distance-coded

Drum inside diameter*

40 mm

70 mm

80 mm

120 mm

150 mm

180 mm

185 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

208.89 mm

254.93 mm

331.31 mm

Mech. permissible speed

10 000 min-1

8 500
min-1

6 250
min-1

4 500
min-1

4 250
min-1

3 250
min-1

3 250
min-1

3 250
min-1

2 500
min-1

Moment of inertia of rotor

0.28 · 10-3 kgm2

0.83 · 10-3 kgm2

2.0 · 10-3 kgm2

7.1 · 10-3 kgm2

12 · 10-3 kgm2

28 · 10-3 kgm2

6.5 · 10-3 kgm2

20 · 10-3 kgm2

59 · 10-3 kgm2

Perm. axial movement

≤ ± 0.5 mm (scale drum relative to scanning head)

Protection EN 60 529

IP 00

Weight (approx.)

0.30 kg

0.42 kg

0.70 kg

1.2 kg

1.5 kg

2.3 kg

0.66 kg

1.5 kg

2.6 kg

* Please select when ordering

1) The position error within one signal period and the accuracy of the graduation result together in the encoder-specific error; for additional error through mounting and the bearing of the measured shaft, see Measuring accuracy