For ASS58N-F1AK1R0BN-0013, EncoderWorks can provide a custom compatible replacement focused on binary SSI mapping, 13-bit singleturn scaling, and Ø10 mm recessed hollow-shaft installation. This model should not be treated as a multiturn encoder or a generic SSI unit. The replacement boundary is whether the controller reads the same 8192-step singleturn value while Clock/Data wiring, zero-set behavior, counting direction, and recessed-shaft seating remain unchanged.
The ASS58N-F1AK1R0BN-0013 is an SSI singleturn absolute encoder configuration with binary code, 13-bit singleturn resolution, 4.5–30 VDC supply, aluminum housing execution, Ø10 mm x 30 mm recessed hollow shaft, K1 1 m cable connection, and radial cable exit. The controller should expect singleturn position only, not a multiturn frame.
The first failure boundary is SSI word accuracy. Clock+ / Clock- and Data+ / Data- must remain true RS422 differential pairs. If cable assignment, binary decoding, 13-bit word length, monoflop timing, or clock pause behavior is different, the SSI signal can be present while the PLC reads the wrong angle.


This replacement fails when SSI communication is present, but the PLC reads the wrong singleturn position because Clock/Data pair assignment, binary decoding, word length, PRESET 1 input, or V/R direction state does not match the original encoder. That is a signal-chain and parameter failure, not simply a sensing failure.
The second boundary is recessed-shaft mechanics. The Ø10 mm shaft is not solid and not a simple through bore. The machine shaft must enter within the proper insertion range, and the torque rest must prevent housing rotation without creating radial, axial, or angular preload.
The replacement decision should first confirm binary SSI format, 13-bit singleturn mapping, K1 1 m radial cable assignment, Clock/Data differential wiring, 20 ±10 µs monoflop behavior, V/R direction input, PRESET 1 zero-set logic, 4.5–30 VDC supply, Ø10 mm recessed shaft fit, 15–30 mm insertion depth, torque rest contact, shield grounding, and offset limits. EncoderWorks treats ASS58N-F1AK1R0BN-0013 as an industrial encoder custom compatible solution where SSI word accuracy and Ø10 recessed-shaft mechanics decide field reliability.
Typical production lead time: 15 working days.
Key Data
| Item | Data |
|---|---|
| Model | ASS58N-F1AK1R0BN-0013 |
| Encoder type | Singleturn absolute encoder |
| Interface | SSI / RS422 |
| Resolution | 13-bit singleturn |
| Position range | 8192 steps per revolution |
| Code | Binary |
| Supply voltage | 4.5–30 VDC |
| Transfer rate | 0.1–2 MBit/s |
| Housing execution | Aluminum, powder coated |
| Shaft type | Recessed hollow shaft |
| Shaft size | Ø10 mm x 30 mm |
| Connection | K1 cable, 1 m |
| Exit position | Radial |
| Control inputs | V/R direction, PRESET 1 zero-set |
| Main engineering anchor | Binary SSI and Ø10 recessed shaft |
| Main failure boundary | Wrong SSI word length, binary decoding error, preset fault, shaft insertion error |

