A58 Incremental Rotary Encoder
A58 Rotary Encoder Drawings

Ø58mm incremental encoder

A58

The A58 series is a photoelectric incremental encoder series that is comprised of 6 iterations – A58M, A58B, A58C, A58C2, A58C3 and A58D. These encoders share the same mechanical and electrical characteristics but differ in mounting parameters. Encoders produce up to 108.000 output pulses per revolution and depending on customer demands can have different versions of output signals: 11uApp, 1Vpp, TTL or HTL.

Mechanical data

Number of output pulses per revolution 100-108000
Line number on disc (z) 100; 250; 500; 600; 800; 1000; 1024; 1125; 1250; 1500; 2000; 2048; 2500; 3000; 3600; 4000; 5000; 9000; 10800
Maximum shaft speed 12000 rpm
Maximum shaft load axial: 10 N
radial: 20 N
Accuracy (T1-period lines on disc in arc. sec) ± 0.1T1 arc. sec
Starting torque at 20°C ≤ 0.01 Nm
Rotor moment of inertia < 15 gcm²
Protection (IEC 529) IP64
Maximum weight without cable 0.25 kg
Operating temperature -10…+70°C
Storage temperature -30…+80°C
Maximum humidity (non-condensing) 98%
Permissible vibration (55 to 2000 Hz) ≤ 100 m/s²
Permissible shock (11 ms) ≤ 1000 m/s²

Electrical data

Version A58-A ∫ µApp A58-AV ∫ 1 Vpp A58-F Π TTL; Π HTL
Supply voltage + 5 V ± 5 % + 5 V ± 5 % + 5 V ± 5 %; + (10 to 30) V
Max. supply current (without load) 80mA 120 mA 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 at Up =± 5V
– low (logic “0”) ≤ 1.5 V at Up = 10 to 30 V
– high (logic “1”) ≥ 2.4 V at Up =±5V
– high (logic “1”) ≥ (Up – 2)V at Up = 10 to 30 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 at Up =± 5V
– low (logic “0”) < 1.5 V at Up = 10 to 30 V
– high (logic “1”) > 2.4 V at Up =±5V
– high (logic “1”) > (Up – 2)V at Up = 10 to 30 V
Maximum operating frequency (-3 dB) ≥ 160 kHz (-3 dB) ≥ 160 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
Standard cable length 1 m; without connector 1 m; without connector 1 m; without connector
Maximum cable length 5 m 25 m 25 m

Accessories

Downloads

Product Catalog
Encoder Selection Guide 2025
A58 Rotary Encoder Datasheet
A58 Incremental Rotary Encoder 2D Drawing
A58 Incremental Rotary Encoder 3D Drawing

Order code

A58 – X1 – X2 – X3/X4 – X5 – X6/X7

Type (X1) Output Signals Version (X2) Pulse Number per Revolution (X3) Supply Voltage (X4) Cablet Length and Outlet or Flange Socket on Case Outlet (X5) Connector or Flange Socket Type (X6)
M – A58M
B – A58B
C – A58C
C2 – A58C2
C3 – A58C3
D – A58D		 A
AV
F		 100
…
108000
*only F signal version for >18000 pulses		 05V – +5V
30V – +(10 to 30)V*
*only for A58-F with HTL output signals		 A01 – 1m (A-axial cable)
A02 – 2m
R03 – 3m (R-radial cable)
AR01 – 1m (AR-universal cable outlet)
CA – flange socket, axial
CR – flange socket radial		 W – without connector
B12 – round, 12 pins
C12 – round, 12 pins
D9 – flat, 9 pins
RS10 – round, 10 pins
ONC – round, 10 pins

ORDER EXAMPLES: 

  1. A58M-A-1024-05V-A01/W
  2. A8B-F-2500-05V-CA-W

Order form

    Check the "Order code" tab in the product page to see how to know your order code.