
Scanning head |
Grating period 200 µm |
Grating period 400 µm |
Grating period 1000 µm |
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AK ERM 2480 |
AK ERM 2420 |
AK ERM 2410 |
AK ERM 2980 |
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Interface |
1 VPP |
1 VPP |
TTL x 1, TTL x 2 |
EnDat 2.22) |
1 VPP |
Cutoff frequency (–3dB) Scanning frequency |
≥ 300 kHz – |
– ≥ 350 kHz |
– – |
≥ 300 kHz – |
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Integrated interpolation |
– |
16 384 (14 bits) |
– |
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Clock frequency |
– |
≤ 8 MHz |
– |
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Calculation time tcal |
– |
≤ 5 µs |
– |
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Electrical connection |
Cable, 1 m, with or without |
Cable, 1 m, with |
Cable, 1 m, |
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Cable outlet |
Tangentially to the left or right |
Tangentially to the left or right, axially
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Tangentially to the right |
Tangentially to the left or right, axially |
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Power supply |
DC 5 V ±0.5 V |
DC 3.6 V to 14 V |
DC 5 V ±0.5 V |
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Current consumption |
≤ 150 mA (without load) |
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At 5 V: ≤ 90 mA (without load) |
≤ 150 mA (without load) |
Power consumption (max.) |
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At 3.6 V: 1080 mW; |
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Cable length1) |
≤ 150 m |
≤ 100 m |
≤ 150 m |
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Vibration 55 Hz to 2000 Hz Shock 6 ms Shock 6 ms, with fault exclusion for loosening of the mechanical connection |
≤ 400 m/s² (EN 60068-2-6)
≤ 1000 m/s² (EN 60068-2-27)
≤ 400 m/s² (EN 60068-2-27) |
≤ 300 m/s² ≤ 400 m/s² |
≤ 400 m/s² ≤ 400 m/s² |
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Operating temperature |
–10 °C to 60 °C |
–10 °C to 100 °C |
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Protection EN 60529 |
IP67 |
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Mass Scanning head Connecting cable M23 coupling |
30 g (without connecting cable) 37 g/m 50 g |
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1) With HEIDENHAIN cable 2) Absolute position value after traverse of two reference marks |
Scale drum |
Grating period 200 µm |
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Measuring standard Coefficient of expansion |
Steel drum αtherm 10 · 10–6 K–1 |
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Signal periods |
1024 |
1200 |
1440 |
1800 |
2048 |
2400 |
2800 |
3392 |
4096 |
5200 |
7200 |
Drum inside diameter* |
40 mm |
40 mm/55 mm |
55 mm |
70 mm |
80 mm/95 mm |
105 mm/120 mm |
130 mm/140 mm |
160 mm |
180 mm/220 mm |
260 mm/295 mm |
380 mm/410 mm |
Drum outside diameter* |
64.37 mm |
75.44 mm |
90.53 mm |
113.16 mm |
128.75 mm |
150.88 mm |
176.03 mm |
213.24 mm |
257.50 mm |
326.90 mm |
452.64 mm |
Accuracy of graduation |
±12” |
±10” |
±8.5” |
±7” |
±6” |
±5.5/7” |
±5/6” |
±4” |
±3.5/4.5” |
±3/4” |
±2.5/3.5” |
Interpolation error per signal period |
±9” |
±8” |
±6.5” |
±5.5” |
±4.5” |
±4” |
±4” |
±3” |
±2.5” |
±2” |
±1.5” |
Reference mark |
One or distance-coded |
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Mechanically |
≤ 22 000 rpm |
≤ 19 000/ |
≤ 18 500 rpm |
≤ 14 500 rpm |
≤ 13 000/ |
≤ 10 500 rpm |
≤ 9000/8500 rpm |
≤ 7000 rpm |
≤ 6000 rpm |
≤ 4500 rpm |
≤ 3000 rpm |
Maximum angular acceleration |
50 000 rad/s2 |
27 000 rad/s2/ 48 000 rad/s2 |
20 000 rad/s2
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9000 rad/s2
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6000 rad/s2/ 9000 rad/s2 |
4900 rad/s2/ 7000 rad/s2 |
3300 rad/s2/ 4400 rad/s2 |
1900 rad/s2 |
820 rad/s2/ 1800 rad/s2 |
560 rad/s2/ 1300 rad/s2 |
570 rad/s2/ 960 rad/s2 |
Moment of inertia |
0.15 · 10–3 kgm2 |
0.32/0.24 · 10–3 kgm2 |
0.63 · 10–3 kgm2 |
1.5 · 10–3 kgm2 |
2.6/2.1 · 10–3 kgm2 |
4.4/3.4 · 10–3 kgm2 |
7.4/6.3 · 10–3 kgm2 |
16 · 10–3 kgm2 |
37/23 · 10–3 kgm2 |
76/42 · 10–3 kgm2 |
240/150 · 10–3 kgm2 |
Permissible axial movement |
≤ ±1.25 mm |
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Mass |
0.21 kg |
0.35/0.22 kg |
0.44 kg |
0.69 kg |
0.89/0.65 kg |
1.0/0.72 kg |
1.2/0.99 kg |
1.8 kg |
3.0/1.6 kg |
3.5/1.7 kg |
5.4/3.2 kg |
Scale drum |
Grating period 400 µm |
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Measuring standard Coefficient of expansion |
Scale drum αtherm 10 · 10–6 K–1 |
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Signal periods |
512 |
600 |
720 |
900 |
1024 |
1200 |
1400 |
1696 |
2048 |
2600 |
3600 |
3850 |
4800 |
Drum inside diameter* |
40 mm |
40 mm/55 mm |
55 mm |
70 mm |
80 mm/95 mm |
105 mm/120 mm |
130 mm/140 mm |
160 mm |
180 mm/220 mm |
260 mm/295 mm |
380 mm/410 mm |
450 mm |
512 mm |
Drum outside diameter* |
64.37 mm |
75.44 mm |
90.53 mm |
113.16 mm |
128.75 mm |
150.88 mm |
176.03 mm |
213.24 mm |
257.50 mm |
326.90 mm |
452.64 mm |
484.07 mm |
603.52 mm |
Accuracy of graduation |
±13” |
±11” |
±10” |
±8” |
±7” |
±6/8” |
±5.5/7” |
±4.5” |
±4/5” |
±3.5/4” |
±3/3.5” |
±3.5” |
±3” |
Interpolation error per signal period |
±18” |
±15.5” |
±13” |
±10.5” |
±9” |
±8” |
±6.5” |
±5.5” |
±4.5” |
±3.5” |
±3” |
±2.5” |
±2” |
Reference mark |
One or distance-coded |
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Mechanically |
≤ 22 000 rpm |
≤ 19 000/ |
≤ 18 500 rpm |
≤ 14 500 rpm |
≤ 13 000/ |
≤ 10 500 rpm |
≤ 9000/8500 rpm |
≤ 7000 rpm |
≤ 6000 rpm |
≤ 4500 rpm |
≤ 3000 rpm |
≤ 3000 rpm |
≤ 1600 rpm |
Maximum angular acceleration |
50 000 rad/s2 |
27 000 rad/s2/ 48 000 rad/s2 |
20 000 rad/s2
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9000 rad/s2
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6000 rad/s2/ 9000 rad/s2 |
4900 rad/s2/ 7000 rad/s2 |
3300 rad/s2/ 4400 rad/s2 |
1900 rad/s2 |
820 rad/s2/ 1800 rad/s2 |
560 rad/s2/ 1300 rad/s2 |
570 rad/s2/ 960 rad/s2 |
470 rad/s2
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230 rad/s2
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Moment of inertia |
0.15 · 10–3 kgm2 |
0.32/0.24 · 10–3 kgm2 |
0.63 · 10–3 kgm2 |
1.5 · 10–3 kgm2 |
2.6/2.1 · 10–3 |
4.4/3.4 · 10–3 |
7.4/6.3 · 10–3 kgm2 |
16 · 10–3 kgm2 |
37/23 · 10–3 kgm2 |
76/42 · 10–3 kgm2 |
235/151 · 10–3 kgm2 |
153 · 10–3 kgm2 |
713 · 10–3 kgm2 |
Permissible axial movement |
≤ ±1.25 mm |
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Mass |
0.21 kg |
0.35/0.22 kg |
0.44 kg |
0.69 kg |
0.89/0.65 kg |
1.0/0.72 kg |
1.2/0.99 kg |
1.8 kg |
3.0/1.6 kg |
3.5/1.7 kg |
5.4/3.2 kg |
2.8 kg |
9.1 kg |
* Please select when ordering |