Honeywell 2MLL-EFMFB Fast Ethernet Module | Replacement, Equivalent & Selection Guide
The Honeywell 2MLL-EFMFB is a Fast Ethernet (100 Mbps) network interface module designed for the Honeywell Experion PKS distributed control system platform. It provides high-speed, deterministic communication between controllers, I/O modules, and supervisory workstations in process automation environments. Whether you are sourcing an original unit, evaluating compatible replacements, or selecting the right Ethernet module for your DCS architecture, this guide covers everything you need.
Technical Specifications
- Part Number: 2MLL-EFMFB
- Manufacturer: Honeywell Process Solutions
- Series: Experion PKS / Plantscape / TDC 3000 Migration
- Module Type: Fast Ethernet Interface Module
- Network Speed: 100 Mbps (Fast Ethernet, IEEE 802.3u)
- Connector: RJ-45 (100BASE-TX)
- Communication Protocol: FTE (Fault Tolerant Ethernet) / Standard TCP/IP
- Backplane Interface: Honeywell 2MLx series chassis compatible
- Operating Temperature: 0°C to 60°C
- Power Consumption: Supplied via chassis backplane
- Certifications: CE, UL (refer to Honeywell datasheet for full listing)
- Weight: Approx. 600 g
- Form Factor: Single-slot plug-in module
Compatible Replacement & Equivalent Models
When the original 2MLL-EFMFB is unavailable or end-of-life, the following models may serve as functional equivalents depending on your chassis revision and firmware version. Always verify compatibility with your system integrator before substitution.
- Honeywell 2MLL-EFMFA — Earlier revision of the same Fast Ethernet module; functionally equivalent in most Experion PKS R310–R400 environments
- Honeywell 51304485-100 — FTE Interface Module used in C200/C300 controller nodes; compatible in FTE-based architectures
- Honeywell 51309512-175 — Ethernet module for legacy TDC 3000 migration nodes; verify chassis slot compatibility
- Honeywell CC-PCNT01 — PROFINET communication module (different protocol; suitable only if migrating to PROFINET topology)
- Third-party FTE-compatible NICs — Industrial-grade 100BASE-TX modules with Honeywell FTE driver support; consult Konmask for validated options
Why Choose the Original Model
- Guaranteed FTE Protocol Support: The 2MLL-EFMFB is factory-validated for Honeywell Fault Tolerant Ethernet, ensuring deterministic, redundant communication without additional configuration
- Seamless Firmware Integration: Plug-and-play with Experion PKS R300 and above; no driver conflicts or compatibility patches required
- Long-term Support: Honeywell provides extended lifecycle support and firmware updates for validated hardware
- Reduced Commissioning Risk: Using OEM hardware eliminates the risk of subtle incompatibilities that can cause intermittent faults in safety-critical processes
- Warranty & Traceability: Sourced through Konmask with full traceability documentation available on request
Typical Applications
- Experion PKS C200 / C300 controller node Ethernet connectivity
- FTE (Fault Tolerant Ethernet) network redundancy implementation
- DCS-to-SCADA supervisory network integration
- Refinery, petrochemical, and power generation process control networks
- Pharmaceutical batch control systems requiring deterministic Ethernet
- Legacy TDC 3000 / PlantScape migration projects requiring modern Ethernet interfaces
- Offshore platform and marine automation DCS upgrades
System Compatibility
- Honeywell Experion PKS: R300, R310, R400, R410, R430, R500 (verify with release notes)
- Honeywell PlantScape: R500 and later with FTE option
- Controller Nodes: C200, C200E, C300 (2MLx chassis)
- Network Topology: Star, ring, and redundant FTE configurations
- Not Compatible With: Experion LX, Safety Manager (SM), or standalone ACE nodes without additional interface hardware
Selection Guide
Use the table below to select the correct Ethernet module for your Honeywell DCS environment:
- Need 100 Mbps FTE on C200/C300 node → 2MLL-EFMFB (this product)
- Need 1 Gbps uplink on C300 node → Honeywell 51309512-275 or equivalent GbE module
- Need PROFINET interface → CC-PCNT01
- Need Modbus TCP gateway → Honeywell 51304453-100 or third-party Modbus TCP module
- Replacing legacy Cnet interface → See Honeywell 2MLL-C22B (Cnet I/F Module)
- Budget-constrained / EOL replacement → Contact Konmask for refurbished or compatible alternatives
Quality Assurance & Sourcing
All Honeywell modules supplied by Konmask.com undergo the following quality process:
- Visual and mechanical inspection upon receipt
- Firmware version verification against Honeywell compatibility matrix
- Functional power-on test where applicable
- Anti-static packaging and climate-controlled storage
- Full traceability documentation (COC, test reports) available on request
- Sourced from authorized distributors, OEM surplus, or verified secondary market channels
How to Order
- SKU: 2MLL-EFMFB
- MOQ: 1 unit
- Add to cart directly, or contact us for bulk pricing, lead time confirmation, or compatibility consultation
- Email: support@konmask.com
- Phone / WhatsApp: +0086 19859288691
- Expedited sourcing available for urgent plant shutdowns or emergency replacements
Replacement & Compatibility FAQ
Q: Can the 2MLL-EFMFB replace the 2MLL-EFMFA?
A: In most cases yes — both are Fast Ethernet modules for the 2MLx chassis. Confirm firmware revision compatibility with your Experion PKS release before swapping.
Q: Is this module compatible with Experion R500?
A: The 2MLL-EFMFB is validated for R300–R430. For R500 environments, verify with Honeywell release notes or contact Konmask for guidance.
Q: Can I use a standard commercial NIC as a replacement?
A: No. The FTE protocol requires Honeywell-validated hardware or certified FTE-compatible NICs. Standard commercial NICs will not support FTE redundancy.
Q: Do you supply refurbished units?
A: Yes. Konmask supplies both new and refurbished units. All refurbished modules are tested and documented. Specify your preference when ordering.
Q: What is the lead time?
A: Typically 3–7 business days for in-stock units. Contact us for current availability and expedited options.
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Contact: support@konmask.com | +0086 19859288691
