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ABB SDCS-FEP-1-COAT Industrial Fieldbus Expansion Module

ABB SDCS-FEP-1-COAT Industrial Fieldbus Expansion Module

The SDCS-FEP-1-COAT is an original industrial-grade fieldbus expansion module developed exclusively by ABB, tailored for ABB ACS series mid-to-high power inverters (e.g., ACS800 heavy-duty drives, ACS880 multi-drive systems, and select legacy ACS600 models). As a dedicated communication enhancement component, it extends the inverter’s native fieldbus connectivity, acting as a "protocol bridge" between the inverter and upper-level industrial control systems (e.g., DCS, PLC, SCADA). This module is critical for large-scale industrial automation scenarios—such as oil & gas pipelines, power plant auxiliary drives, and heavy machinery lines—where high-reliability, deterministic data exchange and centralized drive control are essential to maintain process stability.


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The SDCS-FEP-1-COAT is an original industrial-grade fieldbus expansion module developed exclusively by ABB, tailored for ABB ACS series mid-to-high power inverters (e.g., ACS800 heavy-duty drives, ACS880 multi-drive systems, and select legacy ACS600 models). As a dedicated communication enhancement component, it extends the inverter’s native fieldbus connectivity, acting as a "protocol bridge" between the inverter and upper-level industrial control systems (e.g., DCS, PLC, SCADA). This module is critical for large-scale industrial automation scenarios—such as oil & gas pipelines, power plant auxiliary drives, and heavy machinery lines—where high-reliability, deterministic data exchange and centralized drive control are essential to maintain process stability.


The SDCS-FEP-1-COAT is a precision-engineered fieldbus expansion component designed to address the limited native communication interfaces of ABB ACS series high-power inverters. It unlocks advanced industrial bus protocols, facilitating bidirectional, low-latency data flow between the inverter and centralized control systems—critical for remote monitoring of drive parameters (e.g., output current, motor temperature, fault logs) and issuing real-time control commands (e.g., speed adjustment, torque limiting) without on-site intervention.

Key Functions

  • Multi-Protocol Fieldbus Support:
    Natively integrates support for industry-standard fieldbus protocols to match diverse automation architectures, including:

    • Profibus DP (IEC 61158): Ideal for deterministic, high-speed communication (cycle times down to 1ms) in synchronized manufacturing processes (e.g., conveyor line speed coordination).

    • Foundation Fieldbus H1: Suited for process industries (e.g., chemical plants, water treatment) to enable integrated process control and device diagnostics over long distances (up to 1900m).

    • Modbus RTU/TCP: A cost-effective, widely adopted protocol for connecting the inverter to SCADA systems or HMIs, supporting up to 247 connected devices in a single network.

    • Optional protocol firmware updates (via ABB’s DriveCom software) to adapt to evolving site communication requirements.

  • High-Speed & Deterministic Data Transmission:
    Delivers a maximum communication baud rate of 12Mbps (for Profibus DP) and supports up to 64 configurable data points (32 input parameters + 32 output commands), ensuring real-time synchronization between the inverter and control system with latency <4ms—critical for time-sensitive applications like precision rolling mills.

  • Centralized Monitoring & Control:
    Enables upper-level systems to access comprehensive inverter data, including real-time operating status, historical performance trends, and detailed fault codes (e.g., overvoltage, overheating). It also allows remote configuration of inverter parameters (e.g., acceleration/deceleration time, motor rated current) via the fieldbus, eliminating the need for on-site parameter tuning.

  • Fault Tolerance & Diagnostics:
    Features built-in communication error detection (e.g., signal loss, parity errors, bus collisions) and auto-recovery mechanisms. It logs communication anomalies to non-volatile memory and transmits fault codes to both the inverter’s main display and upper-level systems. Local LED indicators (green: bus active; yellow: data transmission; red: fault) provide quick visual troubleshooting, reducing downtime in critical processes.

  • Seamless Inverter Integration:
    Connects directly to the inverter’s internal drive bus (ABB proprietary protocol) for plug-and-play compatibility. It automatically syncs with the inverter’s main control unit, eliminating external wiring modifications and ensuring no interference with the drive’s core control logic.

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