FOXBORO RH926GH

Description

Product Description

Product Parameters

• Brand/Model: FOXBORO RH926GH
• Core Communication Parameters
  • Ethernet Ports: 2× Gigabit Ethernet (10/100/1000 Mbps) with MRP/DLR redundancy
  • Fieldbus Support: Foundation Fieldbus H1 (2× ports, 31.25 kbps)
  • Protocols: Modbus TCP/IP, EtherNet/IP, Foundation Fieldbus H1, Foxboro I/A Series backplane protocol
  • Maximum Fieldbus Nodes: 32 devices per H1 segment
  • Ethernet Redundancy: Automatic failover (≤ 50ms) between primary/secondary ports
• System & Diagnostic Parameters
  • Compatible Systems: Foxboro I/A Series DCS (FCP270, FCP280, FCP400 controllers)
  • Diagnostic Functions: Ethernet link status, packet error logging, Fieldbus segment health, device connectivity alerts, LED indicators (per port)
  • Configuration: Foxboro I/A Series Workbench, Network Configuration Tool (NCT)
  • Security Features: IP filtering, access control lists (ACL), TLS 1.2 encryption for Ethernet communication
• Environmental & Physical Parameters
  • Operating Temperature: -20°C ~ +60°C
  • Storage Temperature: -40°C ~ +85°C
  • Vibration Resistance: 5g (10-2000Hz, IEC 60068-2-6)
  • Shock Resistance: 30g (11ms half-sine wave)
  • EMI/EMC Compliance: EN 61326-1 (industrial immunity)
  • Power Supply: 5V DC (from I/A Series chassis) + 24V DC (redundant input), power consumption ≤ 12W
  • Protection Grade: IP20 (rack-mount installation)
  • Dimensions: 100mm (W) × 200mm (H) × 150mm (D) (I/A Series chassis-compatible)
  • Installation: Hot-swappable (Foxboro certified chassis)

Advantages & Features

1. Dual Redundant Communication Paths: FOXBORO RH926GH offers redundant Gigabit Ethernet and Foundation Fieldbus H1 ports with automatic failover (≤50ms), ensuring uninterrupted data transmission in critical applications like refinery reactor control.
2. Advanced Network Diagnostics: Real-time monitoring of Ethernet link status, Fieldbus segment health, and device connectivity enables proactive identification of network issues, reducing mean time to repair (MTTR) and minimizing unplanned downtime.
3. Robust Industrial Design: Wide temperature tolerance (-20°C ~ +60°C) and EMI resistance make FOXBORO RH926GH suitable for harsh industrial environments, including areas with high electrical noise (e.g., near pumps, motors, or switchgear).
4. Native I/A Series Integration: Fully compatible with Foxboro I/A Series controllers and engineering tools, the module requires no third-party hardware or software for configuration, streamlining system deployment and maintenance.

Application Fields & Cases

1. Oil Refinery Reactor Control: A major oil refinery deployed FOXBORO RH926GH modules in its Foxboro I/A Series DCS to connect controllers with Foundation Fieldbus H1 transmitters and Ethernet-based HMIs in a hydrocracking reactor system. The redundant Ethernet ports prevented communication loss during a network switch failure, ensuring continuous control of reactor temperature and pressure and avoiding a costly shutdown.
2. Chemical Plant Batch Processing: A petrochemical facility used FOXBORO RH926GH to integrate Fieldbus-enabled dosing pumps and Ethernet SCADA systems into its I/A Series DCS. Advanced diagnostics identified a faulty Fieldbus segment early, allowing maintenance before batch quality was impacted, and reducing waste by 20%.
3. Power Generation Turbine Monitoring: A combined-cycle power plant integrated FOXBORO RH926GH with turbine vibration sensors (Fieldbus H1) and central SCADA (Ethernet) to monitor critical turbine parameters. The module’s redundant connectivity ensured compliance with safety regulations by preventing data gaps during network outages, avoiding equipment damage and unplanned downtime.

Competitor Comparison

Selection Suggestions & Precautions

1. Selection Suggestions: FOXBORO RH926GH is ideal for Foxboro I/A Series DCS users needing dual redundant Ethernet/Fieldbus connectivity with advanced diagnostics (e.g., oil & gas, power generation). For Emerson DeltaV DCS, choose Emerson DeltaV communication modules; for Siemens PCS 7 systems, select Siemens CP 443-1 modules.
2. Precautions:
   • Configure Ethernet redundancy (MRP/DLR) via Foxboro I/A Series Workbench to enable automatic failover—verify failover functionality after installation to ensure reliability.
   • Use shielded twisted-pair cable for Fieldbus H1 connections and Cat6/Cat6a cable for Ethernet to minimize EMI interference and ensure signal integrity.
   • Limit Fieldbus H1 segment length to 1900m (per Foundation Fieldbus standards) to avoid communication degradation; use repeaters for longer distances.
   • Follow Foxboro hot-swappable procedures when replacing the module to avoid disrupting the DCS chassis or other connected modules.
   • Regularly update the module’s firmware to the latest version to address security vulnerabilities and improve performance.

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