1. Basic Information

ABB LD800HSE (Part No. 3BSE073314R1) is an explosion-proof FOUNDATION Fieldbus HSE linking device, specially designed for ABB Freelance and System800xA DCS automation platforms. Certified for ATEX and IECEx Zone 2 hazardous areas, it acts as a core gateway converting HSE high-speed Ethernet and H1 fieldbus signals.

2. Technical Specifications

2.1 Communication Interface Parameters

• Model: LD800HSE-EX, Part No.: 3BSE073314R1
• Type: Explosion-proof FF HSE Foundation Fieldbus Linking Device
• HSE Interface: 1×10/100Mbps adaptive Ethernet RJ45 port
• H1 Fieldbus Interface: 4×independent 31.25kbit/s fieldbus ports
• Standard: Compliant with FF HSE Class 42c protocol
• Session Capacity: Max 64 HSE sessions, 400 HSE VCRs
• Redundancy Support: Device-level and link-level redundant networking
• Device Expansion: Supports multiple FF intelligent instrument mounting

2.2 Electrical Parameters

• Power Supply Mode: Dual redundant power input
• Working Voltage: DC 9～36V (Standard 24VDC)
• Power Consumption: ≤4W low power design
• Isolation Voltage: DC 1500V electrical isolation
• Protection: Over-current, short-circuit and surge protection
• Signal Performance: Differential transmission with strong anti-interference

2.3 Environmental & Physical Parameters

• Explosion-proof Grade: ATEX II 3G, IECEx Zone 2 certification
• Protection Class: IP20
• Operating Temperature: -25℃～+70℃
• Storage Temperature: -40℃～+85℃
• Humidity Range: 5%～90%RH (Non-condensing)
• Installation: Standard DIN rail mounting
• Dimensions: 105mm × 100mm
• Weight: Approx. 0.4kg

3. Features

• Hazardous Area Adaptability: Professional Zone 2 explosion-proof certification allows direct installation in flammable and explosive industrial areas, meeting safety specification requirements of petrochemical and chemical industries.
• 4-channel Independent Bus Aggregation: Four isolated H1 interfaces realize grouped collection and management of field instruments, balancing bus load and optimizing network logic.
• Bidirectional Protocol Conversion: Seamless data intercommunication between HSE high-speed Ethernet and H1 fieldbus, realizing hierarchical and intelligent fieldbus network architecture.
• Dual Redundancy High Reliability: Supports dual power and link redundancy, achieving millisecond-level seamless failover without data interruption or network paralysis.
• Low Power & Anti-interference: Low heat generation with <4W power consumption, equipped with high-voltage isolation and surge protection to resist on-site electromagnetic interference and bus impact.
• Intelligent Diagnosis & Easy Maintenance: Real-time monitoring of bus link, power supply and device status, accurately locating faults such as disconnection and overload to reduce maintenance difficulty.
• Original System Compatibility: Deeply adapted to ABB Freelance and System800xA DCS platforms, plug-and-play without additional protocol configuration for system upgrade and replacement.

4. Working Principle

1. Hierarchical Network Connection: The module acts as a core gateway, connecting the upper DCS control subnet via HSE Ethernet and accessing on-site FF intelligent instruments through 4 independent H1 fieldbus links.
2. Field Data Collection: Polls pressure, temperature, flow and other FF bus instruments in real time to collect process parameters, equipment status and alarm information.
3. Protocol Parsing & Conversion: Converts bidirectional data between H1 low-speed fieldbus protocol and HSE high-speed Ethernet protocol through dedicated bus chip processing.
4. Data Transmission & Command Forwarding: Uploads aggregated field data to the DCS main control system, and forwards system configuration and control commands to on-site instruments.
5. Redundancy Fault Tolerance: Synchronizes data and link status between master and backup devices, realizing seamless switching to ensure continuous communication under abnormal conditions.
6. Real-time Self-diagnosis: Continuously monitors power supply, link status and bus load, records fault information and triggers alarms to support rapid maintenance.

5. Applications

5.1 Hazardous Area Fieldbus Networking

5.2 ABB DCS System Capacity Expansion

5.3 Old Equipment Renovation & Replacement

5.4 Pharmaceutical & Fine Chemical Automation

5.5 Industrial Digital Transformation