A custom compatible replacement for ASS58N-F2AAARHGN-0013 can be supplied by EncoderWorks with the main check placed on Gray-code SSI pin mapping, H-option verification, and Ø12 mm recessed hollow-shaft installation. This model should not be treated like the R0 connector version or the Ø10 shaft version. The M23 connector, Gray decoding, option segment, and singleturn word length must be confirmed before replacement approval.
The ASS58N-F2AAARHGN-0013 is an SSI singleturn absolute encoder configuration with Gray code, 13-bit singleturn resolution, 4.5–30 VDC supply, aluminum housing execution, Ø12 mm x 30 mm recessed hollow shaft, 12-pin M23 connector, and radial exit. The controller should expect 8192 positions per revolution, not a multiturn frame.
The first failure boundary is SSI connector accuracy. Clock+ / Clock- and Data+ / Data- must remain true RS422 differential pairs. If the M23 pinout is copied incorrectly, reserved pins are used, or the H option is assumed instead of verified, the SSI frame can be stable while the decoded angle is wrong.
This replacement fails when SSI communication is present, but the PLC reads the wrong singleturn position because M23 pin assignment, Gray decoding, 13-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 hollow shaft must enter within the correct insertion range, and the torque rest must prevent housing rotation without creating radial, axial, or angular preload. Connector strain must not disturb shaft seating.
The replacement decision should first confirm Gray SSI format, 13-bit singleturn mapping, radial M23 pin 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, 15–30 mm insertion depth, torque rest contact, shield grounding, and offset limits. EncoderWorks treats ASS58N-F2AAARHGN-0013 as an industrial encoder custom compatible solution where SSI pin accuracy and option-specific matching decide field reliability.
Typical production lead time: 15 working days.
Key Data
| Item | Data |
|---|---|
| Model | ASS58N-F2AAARHGN-0013 |
| Encoder type | Singleturn absolute encoder |
| Interface | SSI / RS422 |
| Resolution | 13-bit singleturn |
| Position range | 8192 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 | 12-pin M23 connector |
| 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 M23 pin mapping, option mismatch, preset fault, shaft insertion error |
