New ABB LD 810HSE EX 3BSE091722R1 FOUNDATION Fieldbus Linking Device

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FAQs

Q1: What is the primary function of the LD 810HSE EX?

It is a FOUNDATION Fieldbus Linking Device that acts as a gateway between FF-HSE (High Speed Ethernet) and FF-H1 (Foundation Fieldbus) networks. It enables the ABB 800xA DCS or AC 800M controller to communicate with up to 4 independent H1 fieldbus segments, each supporting multiple FF field instruments .

Q2: Can the LD 810HSE EX be used in hazardous areas?

Yes. The "EX" suffix indicates intrinsic safety certification. It is certified Ex ia IIC T4 and suitable for installation in Zone 1/2 (gas) and Zone 21/22 (dust) hazardous areas. It holds ATEX and IECEx certifications .

Q3: How does redundancy work with this device?

Two LD 810HSE EX modules can be configured as a redundant pair connected via a redundancy link interface (RDL). One device operates as the primary (handling all communication including LAS scheduling), while the other acts as secondary/backup. If the primary fails, the secondary automatically takes over with a switchover time of ≤10 ms, ensuring continuous operation .

Q4: What are the power supply requirements?

The device requires an external 24 V DC power supply (18–32 V DC) with SELV/PELV isolation. The H1 fieldbus links must be powered separately via dedicated fieldbus power conditioners. The module itself consumes approximately 200 mA typical.