ASM SIPLACE 03047212 is not simply an MS101 reading head. It is specifically the MS101 X-axis version for HS-D, which means sensor family, axis assignment and machine platform must all match before it becomes the correct spare.
An MS101 replacement is commonly investigated during X-axis feedback, positioning or servo-related troubleshooting on the applicable machine platform. Before changing the read head, check the installed label, connector and surrounding feedback path so that a motor, cable or another axis component is not mistaken for an encoder fault.
MS101 Axis and Platform Versions
| Part Number | 03047212; documented suffixes include -01 and -02 |
|---|---|
| Part Type | MS101 read head / incremental encoder component |
| Term Note | An incremental encoder provides motion-position feedback used by the axis control system |
| Axis | X-axis |
| Platform | HS-D |
| 03047214 | MS101 Y-axis / HS-D |
| 03047215 | MS101 X-axis / S/F-D |
| 03047216 | MS101 Y-axis / S/F-D |
The four closely related P/Ns show why MS101 is not a sufficient purchase description. Choosing the correct axis but the wrong platform, or the correct platform but the wrong axis, can leave the original position-feedback repair unresolved. For a stopped placement machine, that means the production restart is delayed while another part is identified and sourced.
For an urgent HS-D X-axis repair, use the removed 03047212 unit as the primary reference and keep the X/Y and HS-D/S/F-D information together in the maintenance record. This avoids turning one encoder family into four visually similar but operationally different inventory items.