0566759 AC58/1212EK.42SGC Wind Turbine Encoder Custom Replacement Solution
For the 0566759 AC58/1212EK.42SGC encoder, we offer a dedicated customized replacement solution tailored to wind turbine applications. The solution follows a strict 1:1 non-standard customization principle, which guarantees complete mechanical and electrical compatibility with the original Baumer model. Our manufacturing process enables a production cycle of only 10–15 working days, helping customers significantly shorten delivery time compared to long import lead times. This faster turnaround directly benefits wind turbine operators and service providers by minimizing downtime, reducing operational costs, and ensuring system continuity. Choosing our replacement solution provides customers with a stable supply chain and a cost-effective alternative while maintaining high performance standards.
The 0566759 AC58/1212EK.42SGC encoder replacement is based on the Baumer AC58 series design, well known for its precision and robustness in renewable energy systems. As a multiturn encoder with SSI interface, it employs an optical sensing method for accurate signal detection and reliable long-term operation. The device achieves a maximum resolution of 14 bits for singleturn measurements and 16 bits for multiturn counting, delivering high-precision position feedback for turbine control systems. It is equipped with a clamping flange for secure installation, supports electronic zero-point setting, and provides a counting direction input for flexible integration. Furthermore, incremental outputs are available as an additional option, offering expanded functionality. With strong resistance to magnetic fields, the encoder maintains stability and accuracy even under conditions of high electromagnetic interference, making it ideally suited for wind turbine nacelles, generator systems, and other heavy-duty industrial machinery. These attributes ensure reliable turbine operation, reduced maintenance, and long service life.
Replacement model real product photo.


Technical Data
Electrical Ratings
| Parameter | Values |
|---|---|
| Voltage supply | 10…30 VDC5 VDC ±10 % |
| Reverse polarity protection | Yes (10…30 VDC) / No (5 VDC) |
| Consumption w/o load | ≤50 mA (24 VDC)≤80 mA (5 VDC) |
| Initializing time typ. | 20 ms after power on |
| Interface | SSIIncremental A 90° B (optional) |
| Function | Multiturn |
| Steps per revolution | ≤16384 / 14 bit |
| Number of revolutions | ≤65536 / 16 bit |
| Absolute accuracy | ±0.025° |
| Sensing method | Optical |
| Code | Gray or binary |
| Code sequence | CW/CCW coded by connection |
| Inputs | SSI clock; Control signals UP/DOWN inv. and zero; SSI data outputs RS422 |
| Output stages | Diagnostic: 1024, 2048 pulses + invertedIncremental output: 512, 1024, 2048 push-pull |
| Interference immunity | EN 61000-6-2 |
| Emitted interference | EN 61000-6-4 |
| Diagnostic function | Self-diagnosis; Multiturn sensing |
| Approval | UL approval / E63076 |
Mechanical Design
| Parameter | Values |
|---|---|
| Size (flange) | ∅58 mm |
| Optional |
|---|
| Stainless steel design |
| Corrosion protection for offshore applications |
| Parameter Category | Values |
|---|---|
| Shaft type | α10 design solid shaft |
| Flange | Clamping flange |
| Protection EN 60529 | IP 54 (without shaft seal)IP 65 (with shaft seal) |
| Operating speed | ≤10000 rpm (mechanical)≤6000 rpm (electric) |
| Angular acceleration | ≤25000 rad/s² (UB = 0 VDC)≤25000 rad/s² (UB = 10…30 VDC, 5 VDC) |
| Starting torque | ≤0.015 Nm (+25 °C, IP 54)≤0.03 Nm (+25 °C, IP 65) |
| Rotor moment of inertia | 20 g·cm² |
| Admitted shaft load | ≤20 N axial≤40 N radial |
| Material | Housing: aluminiumFlange: aluminium |
| Operating temperature | -25…+85 °C-40…+85 °C (optional) |
| Relative humidity | 95 % non-condensing |
| Resistance | EN 60068-2-6Vibration ≤0.75 mm - 10 - 58 Hz, 10 g - 58 - 2000 HzEN 60068-2-27Shock 200 g, 6 ms |
| Weight approx. | 400 g |
| Connection | Connector M23, 12-pinConnector M12, 8-pinCable 1 m |
