Emerson PACSystems PACMotion PMM345 Motion Controller
PMM345: RX3i multi-axis servo motion, EtherCAT, 4+1 axes/module. RFQ + selection help.
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
RX3i backplane motion module for high-speed EtherCAT servo control — 4 controlled axes plus 1 master per module, 1 ms path planning / 500 µs position / 250 µs communications loops, scalable to 40 physical + 10 master axes in one rack.
Key advantages
- RX3i-native motion — IC695PMM345 module integrates with PACSystems RX3i and PAC Machine Edition.
- Deterministic loops — Path planning 1 ms, position 500 µs, communications 250 µs — rates hold as axes scale.
- EtherCAT servos — Open 100 Mb/s servo command interface to PACMotion drives/motors (and compatible third-party motors via drives).
- Multi-axis density — 4 physical + 1 master (virtual or encoder) per module; up to 40+10 masters per RX3i system.
- Advanced motion features — JerkFree technology, 256 simultaneous cam profiles, synch/delayed start across up to 8 axes, high-speed position capture.
Typical applications
- Packaging, converting, and discrete machine servo coordination.
- Hybrid machine control where PLC logic and multi-axis motion share one RX3i view.
- Modernization from PMM335 (same footprint / motion commands per OEM).
- Systems needing camming, electronic gearing, and fast changeovers.
Selection guide
- Axis count — Number of PMM345 modules vs total physical/master axes (max 40+10).
- Drives / motors — Pair IC830DP drives and IC830M motors (or third-party motors on PACMotion drives).
- I/O — Faceplate 24 V GP/HS I/O; optional Fiber Terminal Block IC695FTB1B132 for distributed motion I/O.
- Engineering tools — PAC Machine Edition + PACMotion Workbench; Servo Sizing App for motor selection.
Common mistakes
- Treating this SKU as a gas detector — catalog seed category is wrong; PMM345 is a multi-axis servo motion controller.
- Under-counting power supplies / slot count for large axis systems (OEM cites 16-slot backplane, CPU, dual supplies for max axes).
- Assuming absolute feedback without battery backup where the encoder mode requires it.
- Mixing incompatible drive voltage classes with motor max bus ratings.
When to RFQ / what to tell us
- Axis count, drive/motor families, RX3i CPU/backplane context.
- FTB / feedback type needs; quantity; ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 47938 |
| Brand | Emerson |
| Model | PACMotion PMM345 (IC695PMM345) |
| Product type | Multi-axis servo motion controller (RX3i module) |
| Axes per module | 4 controlled + 1 master |
| Max axes per RX3i | 40 physical + 10 master |
| Update rates | Path 1 ms; position 500 µs; communications 250 µs |
| Servo interface | EtherCAT (RJ45, CAT5e+), 100 Mb/s |
| Position resolution | 1,000,000 counts/rev |
| Cam profiles | 256 simultaneous per module; up to 2048 stored in RX3i file system |
| Faceplate I/O | 4× 24 V GP in; 2× 24 V HS in; 2× 24 V GP I/O |
| Feedback | Incremental / absolute serial encoder |
| Certifications (OEM PDS) | ATEX, CE |
| Catalog note | Seed category on this SKU is gas-detectors — product is motion control |
Documents
FAQ
Q: Is this a gas detector? A: No — it is the PACMotion PMM345 multi-axis servo motion controller for PACSystems RX3i. The site category seed is incorrect.
Q: How many axes per module? A: Four controlled axes plus one master axis per PMM345.
Q: What should I send for a quote? A: Axis count, drive/motor plan, RX3i context, FTB needs, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Measuring range | Multi-axis motion controller |
| Note | PACMotion motion controller |