For BMSH 58S1G24C12-00P2A, EncoderWorks can provide a custom compatible replacement focused on Gray-code SSI M23 mapping, 12-bit singleturn output, and Ø12 mm blind hollow-shaft seating. This model should not be treated as the same case as the multiturn 12/13 versions. The controller expects a singleturn position word, so the replacement decision must protect SSI pair wiring, Gray-code interpretation, zero setting, and blind-shaft mechanics without adding a multiturn assumption.
The BMSH 58S1G24C12-00P2A is a magnetic SSI singleturn absolute encoder configuration with 12-bit singleturn resolution, Gray code, and 10–30 VDC SSI supply. The P2A suffix should be checked as an IP65, Ø12 mm blind hollow shaft, radial M23 connector execution against the original label, connector layout, and mounting drawing.
The first failure boundary is SSI M23 mapping. Clock+ / Clock- and Data+ / Data- must remain differential pairs from the encoder to the controller. If the M23 pin assignment is copied incorrectly, the shield path is weak, or an unused contact is tied into the circuit, the controller may read shifted or intermittent singleturn values.
This replacement fails when SSI communication is present, but the PLC reads the wrong angular position because M23 pin mapping, Clock/Data pair assignment, Gray-code interpretation, or data termination does not match the original encoder. The encoder may be functional while the signal chain is wrong.
The second boundary is singleturn scaling. This is a 12-bit singleturn model, not a 12/13 multiturn model. If the controller expects multiturn data length, or if the SSI word length is not adjusted to the original singleturn format, the position value can be stable but incorrectly decoded.
Mechanically, the Ø12 mm blind hollow shaft is not a through bore. The machine shaft must enter to the correct depth, remain inside the clamping zone, and avoid bottoming inside the encoder. Torque support should stop housing rotation without forcing radial offset into the bearing system.
The replacement decision should first confirm P2A suffix execution, Ø12 mm blind hollow-shaft fit, insertion depth, IP65 requirement, radial M23 connector layout, 10–30 VDC SSI supply, 12-bit singleturn mapping, Gray code setting, Clock/Data differential pair wiring, 120 Ω data termination, zero input behavior, shield grounding, torque support, and shaft seating. EncoderWorks treats BMSH 58S1G24C12-00P2A as an industrial encoder custom compatible solution where singleturn SSI mapping and blind-shaft mechanics decide field reliability.
Typical production lead time: 15 working days.
Key Data
| Item | Data |
|---|---|
| Model | BMSH 58S1G24C12-00P2A |
| Encoder type | Singleturn absolute encoder |
| Interface | SSI |
| Sensor technology | Magnetic |
| Resolution | 12-bit singleturn |
| Code | Gray |
| Supply voltage | 10–30 VDC |
| Signal standard | SSI clock input, RS422 data output |
| Shaft type | Blind hollow shaft, not through hollow |
| Shaft size | Ø12 mm |
| Connection | Radial M23 connector |
| Protection class | IP65 |
| Control input | Zero setting input |
| Main engineering anchor | Gray SSI M23 and Ø12 blind shaft |
| Main failure boundary | Wrong M23 pin mapping, wrong SSI word length, zero-set error, blind-shaft seating error |
