ERM 2400 series

Scanning head

AK ERM 2480

Interface

  1 VPP

Cutoff frequency –3 dB

≥ 300 kHz

Signal period

≈ 400 µm

Line count*

See ''Scale drum”

Electrical connection*

Cable 1 m, with or without coupling, tangential or axial cable outlet

Cable length

≤ 150 m (with HEIDENHAIN cable)

Voltage supply

5 V DC ± 0.5 V

Current requirement

≤ 150 mA (without load)

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

IP67

Mass

≈ 0.15 kg (with cable)

Scale drum

ERM 2404 scale drum

TTR ERM 2405

Measuring standard

MAGNADUR graduation; signal period of approx. 400 µm

Line count*

512

600

900

1 024

512

600

Position error per
signal period 1)

±18''

±15.5''

±10.5''

±9''

±18''

±15.5''

Accuracy of graduation

±17''

±14''

±10''

±9''

±17''

±14''

Reference mark

One

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

Mech. permissible speed

≤ 42 000 rpm

≤ 36 000 rpm

≤ 22 000 rpm

≤ 20 000 rpm

≤ 33 000 rpm

≤ 27 000 rpm

Moment of inertia of 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

Mass 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