For ASM58N-F3AK1R0GN-1212, EncoderWorks can provide a custom compatible replacement focused on Gray-code SSI cable mapping, 12/12-bit position scaling, and Ø15 mm recessed hollow-shaft installation. This model should not be treated like the Ø10 or Ø12 shaft versions. The larger recessed bore makes insertion depth, torque-rest contact, and offset control more important during replacement.
The ASM58N-F3AK1R0GN-1212 is an SSI multiturn absolute encoder configuration with Gray code, 12-bit singleturn resolution, 12-bit multiturn range, 4.5–30 VDC supply, aluminum housing execution, Ø15 mm x 30 mm recessed hollow shaft, K1 1 m cable connection, and radial cable exit. The replacement should preserve 4096 steps per revolution and 4096 turns.
The first failure boundary is SSI word accuracy. Clock+ / Clock- and Data+ / Data- must remain true RS422 differential pairs. If the controller expects binary code, a different word length, or an incorrect clock pause, the SSI frame can be stable while the absolute position is wrong.
This replacement fails when SSI communication is present, but the PLC reads the wrong position because Clock/Data pair assignment, Gray decoding, 12/12-bit word length, monoflop timing, or cable shielding does not match the original encoder. That is a signal-chain and parameter failure, not simply a sensor failure.
The second boundary is input and shaft behavior. V/R changes counting direction, while PRESET 1 can reset the electrical reference. The Ø15 mm recessed hollow 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 and 12-bit multiturn 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, Ø15 mm recessed shaft fit, insertion depth, torque rest contact, shield grounding, and offset limits. EncoderWorks treats ASM58N-F3AK1R0GN-1212 as an industrial encoder custom compatible solution where SSI word accuracy and Ø15 recessed-shaft mechanics decide field reliability.
Typical production lead time: 15 working days.
Key Data
| Item | Data |
|---|---|
| Model | ASM58N-F3AK1R0GN-1212 |
| Encoder type | Multiturn absolute encoder |
| Interface | SSI / RS422 |
| Resolution | 12-bit singleturn + 12-bit multiturn |
| Position range | 4096 steps x 4096 turns |
| 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 | Ø15 mm x 30 mm |
| Connection | K1 cable, 1 m |
| Exit position | Radial |
| Control inputs | V/R direction, PRESET 1 zero-set |
| Main engineering anchor | Gray SSI and Ø15 recessed shaft |
| Main failure boundary | Wrong SSI word length, Gray decoding error, preset fault, shaft insertion error |
