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ERM 2400 Series

Scanning head

AK ERM 2480

Incremental signals

1 VPP

Cutoff frequency –3 dB

≥ 300 kHz

Signal period

Approx. 400 µm

Line count*

See “Scale drum”

Power supply

5 V DC ± 10 %

Current consumption

≤ 150 mA (without load)

Electrical connection*

Cable 1 m, with or without coupling; cable outlet axial or radial

Cable length

≤ 150 m (with HEIDENHAIN cable)

Vibration 55 to 2000 Hz

Shock 6 ms

≤ 400 m/s2 (EN 60 068-2-6)

≤ 1000 m/s2 (EN 60 068-2-27)

Operating temperature

-10 °C to 100 °C

Protection EN 60 529

IP 67

Weight

Approx. 0.15 kg (with cable)

Scale drum

ERM 2404

ERM 2405

Measuring standard

MAGNADUR graduation; signal period of approx. 400 µm

Inside diameter*

40 mm

55 mm

80 mm

100 mm

40 mm

55 mm

Outside diameter

64.37 mm

75.44 mm

113.16 mm

128.75 mm

64.37 mm

75.44 mm

Line count*

512

600

900

1 024

512

600

Position error per signal period1)

± 18“

± 15.5“

± 10.5“

± 9“

± 18“

± 15.5“

Accuracy of graduation

± 17“

± 14“

± 10

± 9

± 17“

± 14“

Reference mark

One

Mech. permissible speed

≤ 42 000 min-1

≤ 36 000 min-1

≤ 22 000 min-1

≤ 20 000 min-1

≤ 33 000 min-1

≤ 27 000 min-1

Moment of inertia of the rotor

0.12 · 10–3 kgm2

0.19 · 10–3 kgm2

1.0 · 10–3 kgm2

1.4 · 10–3 kgm2

0.11 · 10–3 kgm2

0.17 · 10–3 kgm2

Permissible axial motion

± 0.5 mm

Weight approx.

0.17 kg

0.17 kg

0.42 kg

0.43 kg

0.15 kg

0.15 kg

* Please select or indicate 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

Other line counts/dimensions upon request