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

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 / U1and 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 U_p =±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