A75M

Photoelectric modular rotary encoder A75M is a wider diameter incremental encoder than its predecessor A42M, as it is the main difference between these two open-type encoders.



Mechanical Data

Number of output pulses per revolution 512-20480 ppr
Line number on disc (z) 512; 2048 (others on request)
Max. permissible mechanical rotation speed 16000 rpm
Accuracy (T1-period lines on disc in arc. sec) ± 0.1T1 arc. sec
Permissible axial shaft runout ± 0.05 mm
Rotor moment of inertia



- with shaft ø 20 mm: 26x10-6 kgm2
- with shaft ø 30 mm: 35x10-6 kgm2

Protection (IEC 529) IP00
Maximum weight 0.2 kg
Operating temperature 0...+85°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
   

Electrical Data

Version A75M-AV ∫ 1V App A75M-F Π TTL
Supply voltage + 5 V ± 5 % / < 120 mA + 5 V ± 5 % / <120 mA
Max. supply current (without load) 80mA 120 mA
Light source LED LED
Incremental signals

Differential sine +A / -A and +B / -B
Amplitude at 120 kΩ load:
- I1= 0.6 - 1.2 V
- I2 = 0.6 - 1.2 V

Differential square-wave U1 / U1 and U2 / U2. Signal levels at 20 mA load current:
- low (logic "0") ≤ 0.5 V
- high (logic "1") ≥ 2.4 V
Reference signal

One quasi-triangular +R and its complementary -R per revolution. Signals magnitude at 120 W load:
- I0 = 0.2 - 0.8 V (usable component)

One differential square-wave U0 / U0 per revolution. Signal levels at 20 mA load current:
- low (logic "0") ≤ 0.5 V
- high (logic "1") ≥ 2.4 V

Maximum operating frequency

(-3 dB) ≥ 180 kHz

160 x k) kHz, k - interpolation factor

Direction of signals
+ B lags + A in clockwise rotation
(viewed from shaft side)
U2 lags with U1 in clockwise rotation
(viewed from shaft side)
Maximum rise and fall time - < 0.5 μs
Recommended max. cable length to subsequent electronics 25 m 25 m

Accessories

Typical Applications

           
         
           
           

Drawings

 

Mounting Dimensions

Order Form



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