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Photoelectric Rotary Encoder 

Photoelectric modular rotary encoder A42M is of incremental type and provides up to 25.000 output pulses per revolution. The absence of bearings and lubricants makes the encoder suitable for use in a vacuum environment or situations when zero starting torques are required. 


Technical data

Line number on disc (z)1000, 2500 (others on request)
Number of output pulses per revolution for A42M-FZ x k, where k=1,2,5,10
Max. permissible mechanical rotation speed20000 rpm
Accuracy (T1-period of lines on disc in arc. sec.)± 0.1T1 arc. sec.
Permissible axial shaft run out0.05 mm
Hub inside diameter10, 8, 6 mm
Rotor moment of inertia< 22 gcm²
Protection (IEC 529)IP00
Max. weight:
- rotor assembly
- scanning unit

0.022 kg
0.04 kg
Operating temperature-10...+70 °C
Storage temperature-30...+85 °C
Maximum humidity (non-condensing)98%
Permissible vibration (55 to 2000 Hz)< 100 m/s²
Permissible shock (6 ms)< 1000 m/s²
For electrical and other data please see the attached data sheet