Rotary Encoders - DR. JOHANNES HEIDENHAIN GmbH - #29

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29 Incremental ERN 420 ERN 460 ERN 430 ERN 480 Incremental signals « TTL « HTL » 1 VPP 1) Line counts* 250 500 – 1 000 1 024 1 250 2 000 2 048 2 500 3 600 4 096 5 000 Cutoff frequency –3 dB Scanning frequency Edge separation a – † 300 kHz ‡ 0.39 ìs ‡ 180 kHz –– System accuracy 1/20 of grating period Power supply Current consumption without load 5 V ± 10 % 120 mA 10 to 30 V 100 mA 10 to 30 V 150 mA 5 V ± 10 % 120 mA Electrical connection* • Flange socket M23, radial and axial (with blind hollow shaft) • Cable 1 m, without connecting element Shaft* Blind hollow shaft or hollow through shaft; D = 8 mm or D = 12 mm Mech. perm. speed n2) † 6 000 min–1/† 12 000 min–1 3) Starting torque at 20 °C below –20 °C Blind hollow shaft: † 0.01 Nm Hollow through shaft: † 0.025 Nm † 1 Nm Moment of inertia of rotor † 4.3 · 10-6 kgm2 Permissible axial motion of measured shaft ± 1 mm Vibration 55 to 2 000 Hz Shock 6 ms/2 ms † 300 m/s2; fl ange socket version: 150 m/s2 (EN 60 068-2-6) † 1 000 m/s2/† 2 000 m/s2 (EN 60 068-2-27) Max. operating temp.2) 100 °C 70 °C 100 °C4) Min. operating temp. Flange socket or fi xed cable: –40 °C Moving cable: –10 °C Protection EN 60 529 At housing: IP 67 (IP 66 for hollow through shaft) At shaft inlet: IP 64 (IP 66 upon request) Weight Approx. 0.3 kg Bold: These preferred versions are available on short notice * Please select when ordering 1) Restricted tolerances: Signal amplitude 0.8 to 1.2 VPP 2) For the correlation between the operating temperature and the shaft speed or supply voltage, see General Mechanical Information 3) With two shaft clamps (only for hollow through shaft) 4) 80° for ERN 480 with 4 096 or 5 000 lines