ASM SIPLACE 00335990 is the RSF digital rotary encoder used in the DLM2 Collect & Place head. OEM service documentation identifies it specifically as the RSF Digital Rotary Encoder 12/DLM2, working together with the incremental disk and RSF board inside the front section of the head.
The important point with 00335990 is that replacement is not simply remove-and-plug-in. The encoder position has to be mechanically adjusted against the incremental disk after installation. If the encoder window is positioned incorrectly, or the incremental disk is scratched during service, counting errors can remain even after a new encoder has been fitted.
ASM SIPLACE 00335990 Encoder Specifications
| Part Number | 00335990 |
|---|---|
| OEM Description | RSF Digital Rotary Encoder 12/DLM2 |
| Head Application | DLM2 Collect & Place head / Digital C+P12 context |
| Related Component | RSF board, type 950 |
| Feedback Element | Incremental disk in the rotary feedback mechanism |
| Installation Setting | 1.5 mm distance between the encoder window and incremental disk |
| Post-Installation Check | Functional verification with the SIPLACE SITEST program |
| Core Matching Point | Complete encoder label, DLM2 head configuration and installed rotary-feedback arrangement |
For related placement-head service parts, see ASM SIPLACE head parts. The encoder, incremental disk and RSF board operate as one feedback path, so a rotary-position problem should not be diagnosed from the encoder part number alone.
During replacement, the incremental disk deserves particular attention. OEM service instructions require the encoder window to be set 1.5 mm from the disk and specifically warn against scratching the disk because surface damage can produce counting errors. This makes mounting condition and adjustment just as important as selecting the correct 00335990 encoder.
After installation, the head should not be returned directly to production without verification. The encoder position is adjusted mechanically, the connector is reconnected to the intermediate distribution board, and the rotary encoder function is then checked with SITEST. This is the key difference between a successful encoder replacement and simply installing a part that still leaves rotational feedback unstable.
If the fault or adjustment result is unclear, our technical team can review the encoder label, DLM2 head information, installation photos, encoder-to-disk position and SITEST result remotely to help determine whether the issue remains with the encoder, incremental disk or surrounding feedback path.
00335990 is normally available for DLM2 head maintenance, with confirmed orders usually dispatched within 24–48 hours. For this part, correct installation and verification are as important as supply, so we can also help review the matching information and post-installation check before the head returns to production. A formal specification confirmation sheet is available for internal purchasing approval.
Send the complete encoder label, head type, machine model and required quantity for compatibility verification and formal quotation.