ABB CT92474A Responsible for the entire system's core computing, bus communication, and signal acquisition and processing units, this component is widely utilized in large-scale process control systems—such as those found in power plants, metallurgy, chemical manufacturing, and electric power sectors—providing the system with capabilities for logical operations, bus scheduling, and I/O signal management.

Related Model Affiliation with ABB CT92474A

Related Models and Hierarchical Relationships with ABB CT92474A

CT92470A: Harmony Main CPU Control Board (System Core; the primary master controller for the CT92474A)

CT92471A: Redundant Backup CPU Board; operates in hot-standby mode with the CT92470A and drives the dual-redundant signals for the CT92474A

CT92472A: Bus Communication Master Board; manages the MasterBus300 and interfaces with the CT92474A for communication

CT92473A: System Power Management Board; provides an isolated 24V power supply to the CT92474A

CT92475A: 32-Channel Digital Output (DO) Board; features a channel structure identical to that of the CT92474A (DI), sharing the same bus and rack

CT92476A: 16-Channel DI + 16-Channel DO Hybrid I/O Board; compatible with the CT92474A bus protocol

CT92477A: High-Voltage Digital Input Board; designed to accommodate 220VAC signals (whereas the CT92474A serves as a general-purpose 24VDC DI board)

CT92480A: Analog Input (AI) Board (4-20mA)

CT92481A: Analog Output (AO) Board

All of the above models share the MasterBus300 and can be mixed and utilized within the same rack as the CT92474A.