For ASM58N-F1AK1RHBN-1212, EncoderWorks can provide a custom compatible replacement focused on binary SSI cable mapping, H-option verification, and Ø10 mm recessed hollow-shaft installation. This model should not be treated as the same case as the R0 version. The SSI interface may look similar, but the H option segment must be checked against the original label, wiring requirement, or machine drawing before production.
The ASM58N-F1AK1RHBN-1212 is an SSI multiturn absolute encoder configuration with binary code, 12-bit singleturn resolution, 12-bit multiturn range, 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 continue reading 4096 steps per revolution across 4096 turns.
The first failure boundary is SSI cable mapping. 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 wiring is assumed instead of verified, the PLC may receive shifted data, unstable values, or a stable but wrong binary position.
This replacement fails when SSI communication is present, but the PLC reads the wrong position because Clock/Data pair assignment, binary decoding, 12/12-bit word length, monoflop timing, H-option behavior, or cable shielding does not match the original encoder. That is a signal-chain and option-matching failure, not simply a sensing failure.
The second boundary is input behavior. V/R changes counting direction, while PRESET 1 can reset the electrical reference. If the preset line is triggered during wiring or the direction input is held differently, the encoder can output clean SSI data with the wrong zero point or rotation sense.
Mechanically, the Ø10 mm recessed hollow shaft must be installed within the correct insertion range. It is not a solid shaft and not a normal through bore. Torque rest contact must prevent housing rotation without adding radial, axial, or angular preload.
The replacement decision should first confirm binary SSI format, 12-bit singleturn and 12-bit multiturn mapping, K1 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, Ø10 mm recessed shaft fit, 15–30 mm insertion depth, torque rest contact, shield grounding, and offset limits. EncoderWorks treats ASM58N-F1AK1RHBN-1212 as an industrial encoder custom compatible solution where SSI word accuracy and option-specific wiring decide field reliability.
Typical production lead time: 15 working days.
Key Data
| Item | Data |
|---|---|
| Model | ASM58N-F1AK1RHBN-1212 |
| Encoder type | Multiturn absolute encoder |
| Interface | SSI / RS422 |
| Resolution | 12-bit singleturn + 12-bit multiturn |
| Position range | 4096 steps x 4096 turns |
| Code | Binary |
| Supply voltage | 4.5–30 VDC |
| 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 |
| Option point | H option, verify against original unit |
| Control inputs | V/R direction, PRESET 1 zero-set |
| Main engineering anchor | Binary SSI and H option |
| Main failure boundary | Wrong SSI pair mapping, option mismatch, preset fault, shaft insertion error |
