Application Scenarios: In a combined-cycle power plant, the gas and steam turbines operate with specialized, high-speed control systems (TCS) optimized for speed, load, and protection. However, plant operators need to view and manage the entire process—from the boiler/HRSG to the turbine and generator—from a single, unified DCS interface. The ABB SNAT602​ TAC Interface Board is installed in the DCS controller rack dedicated to the turbine island. It establishes a high-integrity, bi-directional communication link with the TCS (which may be from ABB, GE, Siemens, or others). Through the SNAT602, critical turbine parameters like speed, temperature, valve positions, and alarm status are read into the DCS for display and logging. Simultaneously, setpoints and commands from the DCS operator (e.g., “Load Setpoint”) are securely transmitted to the TCS. The SNAT602​ solves the critical pain point of system integration, breaking down the information silo between the turbine’s dedicated controller and the plant-wide DCS, enabling coordinated plant-wide control and optimization.

In a large material handling system for a port terminal, multiple ACS880 industrial drives control the hoist and trolley motors of rail-mounted gantry cranes. Each crane must interact seamlessly with a central Warehouse Control System (WCS) and local safety sensors. The standard I/O on the drive is insufficient for the numerous required signals: spreader position sensors, anti-sway system inputs, safety interlock signals, and commands from a remote radio control. The ABB SNAT602TAC 5761806-0D​ board is installed in a dedicated slot within each drive’s control unit. Engineers program its integrated controller using ABB’s Automation Builder or similar tools to handle complex local logic—like a programmable soft start sequence for the hoist that factors in load weight. The board’s multiple digital and analog I/Os connect directly to the sensors and remote control receiver. Furthermore, its PROFINET interface establishes high-speed, deterministic communication with the central PLC, reporting status and receiving commands. The SNAT602TAC​ effectively transforms a standard variable speed drive into an intelligent, networked motion controller, solving the challenge of centralized control for a distributed, mobile asset.