YOKOGAWA F3LC21-1N (LC21-1N) – Multi-Link Communication Module | FA-M3 / STARDOM Platform
Engineering Background
The YOKOGAWA F3LC21-1N (catalog alias: LC21-1N) is a dedicated Multi-Link communication module engineered for the FA-M3 Range-free Multi-controller and STARDOM FCN/FCJ distributed control platforms. Designed to meet the rigorous demands of continuous-process industries, this module enables high-speed, deterministic data exchange across multi-controller architectures — a critical requirement in refining, petrochemical, power generation, and advanced manufacturing environments.
Product Positioning
Procurement engineers specifying communication infrastructure for YOKOGAWA FA-M3 or STARDOM-based DCS expansions will find the F3LC21-1N to be the OEM-matched solution for inter-controller linking. It eliminates the latency and integration risk associated with third-party communication bridges, ensuring seamless compatibility with YOKOGAWA’s proprietary Multi-Link bus protocol.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | F3LC21-1N / LC21-1N |
| Manufacturer | YOKOGAWA Electric Corporation |
| Module Type | Multi-Link Communication Module |
| Compatible Platform | FA-M3 Range-free Multi-controller; STARDOM FCN/FCJ |
| Communication Protocol | YOKOGAWA Multi-Link (proprietary high-speed bus) |
| Mounting | FA-M3 base unit slot (standard module form factor) |
| Power Supply | Supplied via backplane (no external power required) |
| Operating Temperature | 0 °C to +55 °C |
| Storage Temperature | -20 °C to +70 °C |
| Relative Humidity | 10% to 90% RH (non-condensing) |
| Weight | Approx. 2,140 g (module + packaging) |
| Certifications | CE, UL (per YOKOGAWA standard module compliance) |
| Country of Origin | Japan |
Proven Application Environments
- Oil & Gas Refining – Inter-controller communication in multi-unit DCS topologies
- Petrochemical Plants – High-speed data linking between FA-M3 controllers managing reactor and separation units
- Power Generation – Coordinated control across turbine, boiler, and balance-of-plant subsystems
- Pharmaceutical Manufacturing – Validated batch control architectures requiring deterministic communication
- Pulp & Paper / Water Treatment – Distributed multi-controller networks with centralized SCADA integration
Engineering Advantages
- OEM-Native Compatibility – Plug-and-play integration with FA-M3 base units; no firmware patching or custom drivers required
- Deterministic Latency – Multi-Link bus architecture guarantees cycle-time consistency critical for closed-loop process control
- Scalable Architecture – Supports multi-drop controller linking, enabling system expansion without topology redesign
- Reduced Engineering Risk – Eliminates protocol translation layers that introduce failure modes in third-party alternatives
- Long Service Life – YOKOGAWA FA-M3 platform modules are supported with long-term parts availability and firmware continuity
System Architecture & Signal Flow
The F3LC21-1N occupies a standard I/O slot in the FA-M3 base unit. Once installed, it establishes a dedicated Multi-Link bus segment connecting multiple FA-M3 CPU modules or remote base units. Data exchange is managed autonomously by the module’s onboard communication processor, offloading inter-controller traffic from the main CPU scan cycle. This architecture supports both peer-to-peer and master-slave topologies depending on system configuration in YOKOGAWA’s ToolBox or WideField3 engineering environment.
Typical Signal Flow:
FA-M3 CPU → Backplane Bus → F3LC21-1N → Multi-Link Cable → Remote FA-M3 / STARDOM FCN Controller
Sourcing & Quality Verification
- All units sourced through verified industrial automation supply channels with documented provenance
- Pre-shipment inspection includes visual examination, label authenticity check, and functional power-on verification where applicable
- Original YOKOGAWA packaging and documentation preserved where available
- Traceability records maintained for B2B procurement compliance and audit requirements
- Counterfeit-risk mitigation: all modules cross-referenced against YOKOGAWA OEM part databases prior to listing
Procurement Process
- Submit RFQ – Contact [email protected] with your required quantity, delivery timeline, and destination port
- Receive Quotation – Formal quotation issued within 1 business day including unit price, lead time, and shipping options
- Order Confirmation – Purchase order accepted via email; proforma invoice issued for payment processing
- Quality Inspection & Dispatch – Module inspected, photographed, and dispatched with tracking; export documentation provided for international shipments
- After-Sales Support – Technical assistance available post-delivery for installation verification and compatibility queries
Technical FAQ
Q: Is the F3LC21-1N compatible with STARDOM FCN controllers?
A: Yes. The F3LC21-1N supports Multi-Link communication within YOKOGAWA’s FA-M3 and STARDOM FCN/FCJ ecosystems. Confirm slot compatibility with your specific base unit revision before ordering.
Q: Can this module be used as a standalone Ethernet gateway?
A: No. The F3LC21-1N is a Multi-Link bus module, not an Ethernet interface. For Ethernet connectivity, refer to YOKOGAWA F3LE01-5T or equivalent Ethernet modules.
Q: What is the maximum number of controllers linkable via F3LC21-1N?
A: Refer to YOKOGAWA FA-M3 system configuration manual (IM 34M06H11-01E) for maximum node count per Multi-Link segment. Contact us for application-specific sizing support.
Q: Do you provide a warranty?
A: Yes. All units carry a 90-day functional warranty from date of shipment. Extended warranty options available upon request.
Q: Can you supply multiple units for a plant-wide DCS upgrade?
A: Yes. Volume pricing is available for orders of 3+ units. Submit your BOM to [email protected] for a consolidated quotation.
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