Process Control Communication Solution – Honeywell 8937-HN | TDC 3000 Series
Where This Product Is Used
The Honeywell 8937-HN Fiber Optic Extender Module is engineered for mission-critical distributed control system (DCS) environments where long-distance, noise-immune data transmission is essential. Typical deployment sites include:
- Oil & Gas Refineries – Extends TDC 3000 LCN/UCN network segments across large process units where copper cabling is susceptible to EMI from motors and variable-frequency drives.
- Chemical & Petrochemical Plants – Provides galvanic isolation between control rooms and hazardous-area field cabinets, reducing ground-loop interference.
- Power Generation Facilities – Bridges DCS nodes across turbine halls and switchgear rooms where high-voltage transients threaten signal integrity.
- Pulp & Paper Mills – Maintains reliable process data links in high-humidity, high-vibration environments where copper connections degrade rapidly.
- Pharmaceutical Manufacturing – Supports GMP-compliant, electrically isolated communication paths between cleanroom controllers and central DCS cabinets.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 8937-HN |
| Manufacturer | Honeywell |
| Series | TDC 3000 / LCN |
| Module Type | Fiber Optic Extender Module |
| Interface | Fiber Optic (multimode) |
| Application | DCS LCN/UCN Network Extension |
| Weight | 530 g |
| Country of Origin | USA |
| Condition | New / Refurbished / Tested Available |
Why Engineers Specify This Model
- EMI/RFI Immunity: Fiber optic medium eliminates susceptibility to electromagnetic interference common in heavy industrial environments.
- Galvanic Isolation: Breaks ground loops between geographically separated DCS nodes, protecting sensitive electronics.
- Extended Reach: Allows TDC 3000 network segments to span distances far beyond the limits of standard copper coax or twisted-pair cabling.
- Drop-in Compatibility: Designed as a native TDC 3000 LCN component — no protocol conversion or additional gateways required.
- Proven Field Reliability: Widely deployed in continuous-process industries where unplanned downtime carries significant financial and safety consequences.
Complete System Bill of Materials
The 8937-HN is typically specified alongside the following Honeywell TDC 3000 components:
- Honeywell 8937-HN-R – Fiber Optic Extender Module (Receiver variant, if applicable)
- Honeywell LCN Coax Tap / Network Interface Units
- Honeywell Universal Control Network (UCN) Modules
- Honeywell Process Manager (PM) / Advanced Process Manager (APM)
- Honeywell 51304485-100 / 51304485-150 – LCN Cable Assemblies
- Multimode Fiber Optic Patch Cables (62.5/125 µm or 50/125 µm)
- ST or SMA Fiber Optic Connectors (per site specification)
Compliance & Industry Standards
- Designed and manufactured under Honeywell’s ISO 9001-certified quality management system
- Compatible with IEC 61158 / IEC 61784 fieldbus and DCS communication standards
- Suitable for use in installations governed by IEC 61511 (Functional Safety – SIS) where fiber isolation is a design requirement
- RoHS compliance status: verify with current Honeywell product documentation for your specific revision
Quality Assurance & Sourcing
At Konmask.com, every Honeywell 8937-HN unit is subject to the following before shipment:
- Visual Inspection: Boards, connectors, and fiber ports examined for physical damage, corrosion, or component anomalies.
- Functional Verification: Where test fixtures are available, modules are powered and communication paths are validated.
- Traceability: Serial numbers and revision levels are logged against each order for full supply-chain traceability.
- Secure Packaging: ESD-safe bags, foam-lined boxes, and moisture-barrier packaging used for all shipments.
How to Source This Part
- Submit your RFQ via konmask.com/pages/contact or email support@konmask.com.
- Provide your required quantity, acceptable condition (new/refurbished/tested), and target delivery date.
- Our sourcing team will confirm availability, revision level, and lead time within 1 business day.
- Orders are shipped with full documentation including test reports and packing lists.
Application-Specific FAQ
Q: Can the 8937-HN be used with Honeywell Experion PKS systems?
A: The 8937-HN is a native TDC 3000 LCN component. Experion PKS uses a different network architecture (FTE – Fault Tolerant Ethernet). Consult your Honeywell system integrator before specifying this module for Experion environments.
Q: What fiber type and connector standard does the 8937-HN use?
A: The module is designed for multimode fiber. Connector type (ST, SMA, or other) should be confirmed against your specific unit’s revision documentation or by contacting our technical team.
Q: Is a warranty available on refurbished units?
A: Yes. Konmask.com offers a standard 12-month warranty on tested and refurbished units. New surplus units carry the original manufacturer warranty where applicable.
Q: What is the typical lead time?
A: In-stock units ship within 2–5 business days. For sourced units, lead time is typically 1–3 weeks depending on global availability.
Q: Can you provide a Certificate of Conformance (CoC)?
A: Yes. A CoC is available upon request for all orders.
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