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ERM 200 Series

Scanning head

AK ERM 220

AK ERM 280

Incremental signals

TTL

1 VPP

Cutoff frequency –3 dB

Scanning frequency

≤ 350 kHz

≥ 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 length

≤ 100 m (with HEIDENHAIN cable)

≤ 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

TTR ERM 200

Measuring standard

MAGNADUR graduation; signal period of approx. 400 µm

Inside diameter*

40 mm

70 mm

80 mm

120 mm

130 mm

180 mm

220 mm

295 mm

410 mm

Outside diameter

75.44
mm

113.16 mm

128.75 mm

150.88 mm

176.03 mm

257.50 mm

257.50 mm

326.90 mm

452.64 mm

Line count*

600

900

1 024

1 200

1 400

2 048

2 048

2 600

3 600

Position error per signal period 1)

± 15.5“

± 10.5“

± 9“

± 8“

± 6.5“

± 4.5“

± 4.5“

± 3.5“

± 3“

Accuracy of graduation

± 11“

± 8“

± 7“

± 6“

± 5.5“

± 4“

± 5“

± 4“

± 3.5“

Reference mark*

TTR ERM 200: One

TTR ERM 200 C: Distance-coded

Mech. permissible speed

≤ 19 000 min-1

≤ 14 500 min-1

≤ 13 000 min-1

≤ 10 500 min-1

≤ 9 000 min-1

≤ 6 000 min-1

≤ 6 000 min-1

≤ 4 500 min-1

≤ 3 000 min-1

Moment of inertia of the rotor

0.34 · 10–3 kgm2

1.6 · 10–3 kgm2

2.7 · 10–3 kgm2

3.5 · 10–3 kgm2

7.7 · 10–3 kgm2

38 · 10–3 kgm2

23 · 10–3 kgm2

44 · 10–3 kgm2

156 · 10–3 kgm2

Permissible axial motion

± 1.25 mm

Weight approx.

0.35 kg

0.69 kg

0.89 kg

0.72 kg

1.2 kg

3.0 kg

1.6 kg

1.7 kg

3.2 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