IS420UCSBH3A

The GE IS420UCSBH3A is a UCSB controller module developed by GE for its Mark VIe control system.

Product Description: UCSB
UCSB: Probably an abbreviation for Universal Control Single Board. This means it is a standalone controller board.
Controller Module: This is the central processing unit in the Mark VIe system that executes the control logic and manages communications.
Mark VIe: General Electric’s advanced distributed control system (DCS) platform for industrial applications, particularly in power generation and oil and gas.
H3A: This suffix indicates a specific hardware version or configuration of a UCSB module.

Key Features and Functions
Standalone computer: The UCSB controller can act as a standalone computer to run application-specific control system logic.
No Direct I/O Hosting: Unlike traditional controllers, the UCSB does not host application inputs/outputs (I/O) directly on the backplane.
Networked I/O Access: Each UCSB controller is connected to all I/O networks within the Mark VIe system. This design provides access to all input data, regardless of which controller manages a particular I/O point.
Redundancy and High Availability: The architecture ensures that the loss of a single controller to maintenance or repair will not result in the loss of any application input data.
Microprocessor: Equipped with a processor to execute control algorithms.
Memory: Has on-board memory (e.g., 256 MB DDR2 SDRAM as noted by one source).
Operating System: Runs a real-time operating system, typically QNX Neutrino.
Programming: Typically programmed using Boolean logic in the Mark VIe control environment.
Ethernet Interface: Includes a primary Ethernet interface (10Base-TX/100Base-TX with RJ-45 connector) for network communications.
Dual Cooling Fans: Some versions may have dual cooling fans for increased reliability.

In summary, the GE IS420UCSBH3A is a stand-alone network controller module for the Mark VIe system that provides powerful, fault-tolerant control of critical industrial processes.

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