For ASS58N-F2AK1RHGN-0012, EncoderWorks can provide a custom compatible replacement focused on Gray-code SSI cable mapping, H-option verification, and Ø12 mm recessed hollow-shaft installation. This model should not be treated like the R0 cable version or the Ø10 shaft version. The same SSI principle may apply, but option matching, cable assignment, and shaft insertion depth must be confirmed before replacement.
The ASS58N-F2AK1RHGN-0012 is an SSI singleturn absolute encoder configuration with Gray code, 12-bit singleturn resolution, 4.5–30 VDC supply, aluminum housing execution, Ø12 mm x 30 mm recessed hollow shaft, K1 1 m cable connection, and radial cable exit. The controller should expect 4096 positions per revolution, not a multiturn frame.
The first failure boundary is SSI cable accuracy. Clock+ / Clock- and Data+ / Data- must remain true RS422 differential pairs. If the cable is copied only by conductor color, or if the H option is assumed instead of verified, the SSI word can be stable while the PLC calculates the wrong shaft angle.
This replacement fails when SSI communication is present, but the PLC reads the wrong singleturn position because Clock/Data pair assignment, Gray decoding, 12-bit word length, H-option behavior, PRESET 1 input, or V/R direction state does not match the original encoder. That is a signal-chain and option-matching failure, not simply a sensing failure.
The second boundary is recessed-shaft installation. The Ø12 mm shaft is not solid and not a simple through bore. The machine shaft must enter within the 15–30 mm insertion range, and the torque rest must prevent housing rotation without radial, axial, or angular preload.
The replacement decision should first confirm Gray SSI format, 12-bit singleturn mapping, K1 1 m radial cable assignment, H-option requirement, Clock/Data differential wiring, 20 ±10 µs monoflop behavior, V/R direction input, PRESET 1 zero-set logic, 4.5–30 VDC supply, Ø12 mm recessed shaft fit, insertion depth, torque rest contact, shield grounding, and offset limits. EncoderWorks treats ASS58N-F2AK1RHGN-0012 as an industrial encoder custom compatible solution where SSI cable accuracy and option-specific matching decide field reliability.
Typical production lead time: 15 working days.
Key Data
| Item | Data |
|---|---|
| Model | ASS58N-F2AK1RHGN-0012 |
| Encoder type | Singleturn absolute encoder |
| Interface | SSI / RS422 |
| Resolution | 12-bit singleturn |
| Position range | 4096 steps per revolution |
| Code | Gray |
| 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 | Ø12 mm x 30 mm |
| Connection | K1 cable, 1 m |
| Exit position | Radial |
| Option point | H option, verify against original unit |
| Control inputs | V/R direction, PRESET 1 zero-set |
| Main engineering anchor | Gray SSI and H option |
| Main failure boundary | Wrong SSI pair mapping, option mismatch, preset fault, shaft insertion error |
