ABB LD800HSEEX 3BSE073314R1 – Ex-rated FOUNDATION Fieldbus H1 to HSE Linking Device for System 800xA

The ABB LD800HSEEX (part code 3BSE073314R1) is a hazardous-area version of ABB’s well-known LD 800HSE linking device. It bridges FOUNDATION Fieldbus H1 segments to High Speed Ethernet (HSE), giving System 800xA and related ABB controllers clean, deterministic access to field instruments.    From my experience, it’s typically chosen when you need FF diagnostics and asset management in Zone 2/Div 2 locations without dragging everything back to a safe area.

• FOUNDATION Fieldbus H1 to HSE gateway – Acts as a link device so controllers and asset tools see H1 instruments over standard Ethernet.

• Ex-rated design (LD800HSEEX) – Suitable for hazardous areas (typically Zone 2/Division 2). It reduces marshalling in many brownfield upgrades.

• System 800xA integration – Seamless access to device parameters and diagnostics for maintenance and asset management workflows.

• Link Master functionality – Provides segment scheduling for stable H1 communications and predictable scan behavior.

• Standard 100BASE‑TX HSE – Works with common industrial Ethernet infrastructure; redundancy can be handled at the network level/topology.

• Diagnostics visibility – You might notice quicker troubleshooting since device status and segment health can be surfaced centrally.

• DIN-rail mounting – Compact form factor for cabinets or field boxes where space typically runs tight.

• Designed to pair with external FF power conditioners/hubs – A practical approach when segment power needs to be tailored per loop count.

I typically see the LD800HSEEX used wherever FF devices live in classified areas and the control network sits in a safe area. It’s a clean fit for:

• Oil & Gas upstream skids, tank farms, loading terminals

• Refining and petrochemical units (Zone 2/Div 2 cabinets)

• Pharmaceutical API plants using FF for dosing and utilities

• Power generation balance-of-plant FF loops

• Specialty chemicals and batch processes with dense FF instrumentation

• Reliability in hazardous areas – The Ex-rated construction makes placement flexible, often shortening FF cable runs and improving signal integrity.

• Compatibility with System 800xA – Smooth engineering, diagnostics, and maintenance workflows reduce time spent in the field.

• Cost-efficient modernization – Keep existing FF H1 instruments while upgrading the host to Ethernet-based HSE and centralized asset management.

• Scalable segments – Pair it with the right FF power conditioners/hubs to match loop density, instead of over-sizing a single chassis.

• Supportability – Part number 3BSE073314R1 helps ensure you receive the Ex variant and the correct firmware track for regulated sites.

A maintenance lead at an LNG terminal told us they swapped in LD800HSEEX units cabinet-by-cabinet over a shutdown. What stood out was the faster device-level diagnostics after start-up and fewer nuisance trips tied to segment noise.

• Cabinet & environment – Use a metal enclosure with proper grounding. Provide ventilation; keep away from heat sources. For Ex deployments, follow the zone/division rating on the device label.

• Power & grounding – Feed with a stable 24 VDC supply. Bond shields at a single point to avoid loops; maintain protective earth continuity.

• Fieldbus wiring – Use shielded, twisted-pair FF cable. Two terminators per H1 segment (one at each end). Keep spur lengths and total trunk length within FF specifications.

• Ethernet topology – Industrial-rated switches recommended. Redundant paths can be implemented at the network level (e.g., ring or dual uplinks).

• Hazardous area rules – Where applicable, use certified glands and observe segregation between IS/non-IS circuits. Verify temperature class and gas group.

• Routine checks – Review device and segment diagnostics, back up configurations, and apply firmware updates during planned windows. Clean connectors and verify torque on terminals periodically.

• CE compliant; RoHS alignment for electronic assemblies

• Ex-rated variant: typically ATEX/IECEx for Zone 2/Div 2 class environments (confirm against the 3BSE073314R1 nameplate and Declaration of Conformity)

• Manufacturer quality system: ISO 9001

• Warranty: commonly 12 months from shipment (regional policies may vary)

If you’re matching an installed base, share your current FF segment count, desired HSE topology, and enclosure classification. We can validate compatibility with your System 800xA version and suggest the right power conditioning blocks and accessories.