A42M

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 vacuum environment or situations when zero starting torque is required.



Mechanical Data

Number of output pulses per revolution 1000-25000 ppr
Line number on disc (z) 1000; 2500 (others on request)
Max. permissible mechanical rotation speed 20000 rpm
Accuracy (T1-period lines on disc in arc. sec) ± 0.1T1 arc. sec
Permissible axial shaft runout 0.05 mm
Hub inside diameter 10, 8, 6 mm
Rotor moment of inertia < 22 gcm²
Protection (IEC 529) IP00
Maximum weight

- rotor assembly: 0.022 kg
- scanning unit: 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
   

Electrical Data

Version A42M-A ∫ 11µApp A42M-AV ∫ 1V Ap A42M-F Π TTL
Supply voltage + 5 V ± 5 % / < 80 mA + 5 V ± 5 % / < 120 mA + 5 V ± 5 % / < 120 mA
Light source LED LED LED
Incremental signals

Two sinusoidal I1 and I2
Amplitude at 1 kΩ load:
- I1 = 7 - 16 µA
- I2 = 7 - 16 µA

Differential sine +A / -A and +B / -B
Amplitude at 120 kΩ load:
- A = 0.6 - 1.2 V
- B = 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 I0 peek per revolution. Signal magnitude at 1 kW load:
- I0 = 2 - 8 µA (usable component)

One quasi-triangular +R and its complementary -R per revolution. Signals magnitude at 120 W load:
- R = 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 at Up =±5V

 

Maximum operating frequency

(-3 dB) ≥ 160 kHz

(-3 dB) ≥ 180 kHz

(160 x k) kHz, k - interpolation factor
Direction of signals I2 lags I1 for clockwise rotation (viewed from shaft side) + 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
Maximum cable length 5 m 25 m 25 m

Accessories

Drawings

 

Mounting Dimensions

Typical Applications

           
         
           
           

Order Form



Contact us:

 

Make an enquiry by filling the form on the left!

Send us a quick e-mail for pricing or any questions regarding the product: sales@precizika.com

Some of your questions may already have been answered in our Frequently Asked Questions section, please take a look!

You can also contact us via phone: +370 (5) 236 3608