HEIDENHAIN AK ERA 4280 Modular Angle Encoder With Optical Scanning

BRAND : HEIDENHAIN

<...

Scale drum	TTR ERA 4202 C
Measuring standard Grating period Coefficient of expansion	Steel drum 20 µm ?therm ? 10.4 · 10–6 K–1
Signal periods	12 000	16 384	20 000	28 000	32 768	40 000	52 000
Accuracy of graduation	±4”	±3”	±2.5”	±2”	±1.9”	±1.8”	±1.7”
Interpolation error per signal period1)	±1.1”	±0.8”	±0.7”	±0.5”	±0.4”	±0.4”	±0.3”
Reference marks	Distance-coded
Drum inside diameter*	40 mm	70 mm	80 mm	120 mm/ 150 mm	150 mm/ 185 mm	180 mm/ 210 mm	270 mm
Drum outside diameter*	76.75 mm	104.63 mm	127.64 mm	178.55 mm	208.89 mm	254.93 mm	331.31 mm
Mech. permissible speed	10 000 rpm	8500 rpm	6250 rpm	4500 rpm	4250 rpm	3250 rpm	2500 rpm
Moment of inertia	0.28 · 10-3 kgm2	0.83 · 10-3 kgm2	2.0 · 10-3 kgm2	7.1/4.5 · 10–3 kgm2	12/6.5 · 10–3 kgm2	28/20 · 10–3 kgm2	59 · 10-3 kgm2
Permissible axial movement	? ±0.5 mm (scale drum relative to the scanning head)
Protection EN 60 529	Complete encoder in mounted condition: IP00
Mass	? 0.30 kg	? 0.42 kg	? 0.69 kg	? 1.2 kg/ 0.66 kg	? 1.5 kg/ 0.66 kg	? 2.3 kg/ 1.5 kg	? 2.6 kg
* Please select when ordering 1) Interpolation error within one signal period and the accuracy of the graduation together result in the encoder-specific error; for additional error from mounting and bearing of the measured shaft, see Measuring accuracy