The Siemens 6SL3544-0FB20-1FA0 is a SINAMICS G120D CU240D-2 PN control unit for distributed motor control. It provides PROFINET and EtherNet/IP communication, integrated STO, standard and fail-safe inputs, analog inputs, an HTL encoder interface and IP65 protection for machine-level installation without a control cabinet.
| Official lifecycle wording | PM300: Active Product |
| Procurement note | Confirm the exact 6SL3544-0FB20-1FA0 order code, paired G120D Power Module, firmware, fieldbus, safety configuration, encoder, I/O pinout and M12 cabling before ordering. |
| Manufacturer | Siemens |
| Complete article number | 6SL3544-0FB20-1FA0 |
| Product designation | CU240D-2 PN |
| Drive family | SINAMICS G120D |
| Operating voltage | External 24 V DC supply |
| Communication | PROFINET and EtherNet/IP |
| Integrated safety function | STO onboard |
| Standard digital inputs | 6, non-isolated |
| Fail-safe digital inputs | 1, optionally parameterizable as safe inputs |
| Digital outputs | 2 × 0.5 A, switched 24 V DC, isolated |
| Analog inputs | 2 × 0–10 V |
| Encoder interface | HTL encoder |
| Additional interfaces | USB and SD/MMC card interface |
| Control methods | V/f, FCC and sensorless vector control |
| Connector design | M12 plugs |
| Operating temperature | −10 to +50 °C |
| Storage temperature | −40 to +70 °C |
| Maximum relative humidity | 95% at 40 °C, condensation not permitted |
| Degree of protection | IP65 / UL Type 3 |
| Dimensions (W × H × D) | 153 × 208 × 55 mm |
| Net weight | Approximately 0.8 kg |
| Standards | UL 508C, cUL, CE and RCM |
Controls motors close to conveyor and material-handling equipment without a traditional cabinet-mounted drive.
Connects distributed G120D motor control to industrial Ethernet automation networks.
Uses integrated STO with appropriate safety engineering, wiring and validation.
Verify the complete MLFB, compatible G120D Power Module, motor rating, firmware, PROFINET or EtherNet/IP project, STO circuit, encoder type, I/O assignment, M12 cables and environmental limits.
Request clear nameplate, connector, enclosure and installed-drive photographs. Confirm condition, firmware evidence, memory card, connector caps, documentation, warranty, packing and destination.
Siemens Industry Mall lists the exact 6SL3544-0FB20-1FA0 as PM300: Active Product. Final procurement should still confirm the paired Power Module, firmware, communication and safety configuration.
It is a Siemens SINAMICS G120D CU240D-2 PN distributed drive control unit.
The official data lists PROFINET and EtherNet/IP communication.
STO is onboard; the complete safety circuit still requires project-specific engineering and validation.
It has six standard digital inputs, one configurable fail-safe input, two digital outputs and two analog inputs.
It is the control portion of the modular G120D system and must be matched with the correct Power Module.
Confirm the MLFB, Power Module, firmware, network, safety circuit, encoder, M12 connections and motor data.
Send the full order code, quantity, destination and installed-system details for availability, configuration and compatibility review.
Exact Control Unit identification, drive-configuration review, inspection planning, sourcing coordination and global delivery support for distributed motor control.



We compare the complete 6SL3544-0FB20-1FA0 order code, CU240D-2 PN configuration, paired G120D Power Module, firmware, network, STO circuit, motor data, encoder and M12 I/O requirements.
This reduces the risk of confusing PN, DP, fail-safe, push-pull or fibre-optic G120D variants that use different interfaces and safety configurations.
The agreed inspection scope can cover nameplate identity, enclosure, M12 connectors, sealing caps, memory-card area, status indicators, firmware evidence and included accessories.
We align visible-condition evidence, drive and safety documents, requested tests, warranty terms, protective packing and destination-specific shipping requirements before dispatch.
The exact Control Unit, Power Module, motor, firmware, network, safety circuit and encoder are checked together.
Procurement teams can define required photographs, connector condition, firmware proof, accessories and documents.
Condition, lead time, warranty, protective packing, transport preference and destination are reviewed before shipment.
| Stage | Order support |
| 1. Inquiry | Send 6SL3544-0FB20-1FA0, quantity, destination and available nameplate or installed-system evidence. |
| 2. Compatibility review | We compare the paired Power Module, motor rating, firmware, fieldbus, STO circuit, encoder, I/O assignment and M12 cabling. |
| 3. Commercial alignment | Availability, condition, lead time, inspection evidence, documentation, warranty and delivery expectations are confirmed. |
| 4. Packing and dispatch | Protective packing and shipment documentation are coordinated for the destination and selected transport method. |
Share the exact quantity, installed configuration, compatibility details and destination for an availability and procurement review.
A 70-model cross-brand reference list for automation, networking, safety, drives, instrumentation and maintenance procurement. Confirm every complete order code before purchase.
| 70 Model References | ||||
| 6GK5208-0BA00-2FC2 | 330104-02-09-10-01-00 | PRO3000 | EM100 - 823-865 | 0243002430 4.300-2420 |
| E175096 | REG-K 12X230/16 | 140471-01 3500/70 | AB444230035 | 15B10851G1 |
| KJ2003X1-BA2 /12P2093X102 | R6010 | SD55X | BM11D | DSX-PLA004 |
| ABB M2301 2TMA070080W0012 | GT437-491 | CK721-A | PR 4501 | BMP21 |
| EB0518(A) FXYMP-M 1677287 | 5642-50 | PSM700 | 24138990 | 60950-50 |
| ACHILLES-NGFW-300-2-R3B | LM4-LC24J-2A2UN | WV-S1112 | F9342DT-01 | 2182-227 |
| 233.52.100 | 15B10840G1 / 15H50541 | Nrk16/A | IEM-3000-8TM | ABB DC505-FBP 1SAP220000R0001 |
| 1SVR450055R0000 | 14YB3-230/C 29317AA8 | D504 | ATM-20 | GVAG-2VK1S |
| sms1600 pn sg001043 | 407860 | OC485 | B4-24-T-5-30 | PRO32IN 10290-0000-F REV-C |
| ABB PM582 / 1SAP140200R0100 | EDB14030 | MP80 | 102MC-SC | 02-70325-02 |
| 1860114A | TSW-552-BS | K9149FF-05 AS KG149FA | BOB1024 | 9418/01-201-10 |
| ABB 61318968 NDPC-02 | Eurotherm 2404 | RKLB57 6180BKR000000-H1111 | KNX /644692 | AVPR100S151213 |
| SDVN-2S | LBB4540/04 F01U508294 HW04/02 WK:2017 | EFCB12T-OE1 | O5H700 | GTD-2000Tx |
| ULFIM-D37M-45-XOR | 1606-XLE240EN | WTD-868-T | H2O | MA2-08E |
Send the exact order code, quantity and destination for availability, configuration and compatibility review.