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IS420UCSBH3A REV B - UCSB Controller Module is available in stock which ships the same day.
IS420UCSBH3A REV B - UCSB Controller Module comes in UNUSED as well as REBUILT condition.
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SPECIFICATIONS:
Part Number: IS420UCSBH3A REV B
Manufacturer: General Electric
Country of Manufacture: United States (USA)
Series: Mark VIe
Function: UCSB Controller
Microprocessor; 600MHz Intel
Memory: 256 MB DDR2 SDRAM
Operating System: QNX Neutrino
Programming: Boolean
Primary Ethernet Interface: 10Base-TX/100Base-TX, RJ-45 Connector
Weight: 2.4 lbs
Availability: In Stock
Manual: GEH-6721_Vol_II
FUNCTIONAL DESCRIPTION:
IS420UCSBH3A REV B is a UCSB Controller Module manufactured by General Electric as part of the Mark VIe Series used in gas turbine control systems with a 1066 MHz Intel EP80579 microprocessor. The UCSB controllers are independent computing units that execute application code. These controllers are panel-mounted and interface with I/O packs via onboard I/O network (IONet) ports. IONet is a dedicated, proprietary Ethernet network designed exclusively for communication between Mark* controls I/O modules and controllers.
Unlike conventional controllers that use a backplane for I/O, the UCSB controller does not directly host any application I/O. Instead, all I/O networks are connected to each controller, ensuring that each unit has full access to all input data. This hardware and software architecture eliminates any single point of failure for input data, allowing maintenance or power-down of one controller without loss of critical inputs.
The controller operates on QNX Neutrino, a real-time, multitasking operating system built for high-speed, high-reliability industrial environments.
For functional safety applications, the Mark VIES UCSBH3A Safety Controller and associated Safety I/O modules are deployed. These components are designed to meet SIL 2 and SIL 3 safety standards, helping reduce risks in critical operations. The safety system hardware and software are certified to IEC 61508 standards and are configured specifically for use in safety-instrumented systems (SIS) environments by trained personnel. The UCSB controllers offer the following advantages:
UCSB SOFTWARE AND COMMUNICATION:
The controller is configured with application-specific software and is capable of executing both ladder logic rungs and function blocks. Minor control logic modifications can be made online, without requiring a system restart. Time synchronization between controllers and I/O packs is achieved via the IEEE 1588 protocol over the R, S, and T IONets, ensuring clock alignment within ±100 microseconds. Additionally, external data is exchanged with the control system database in the controller through these same IONet connections. This includes process inputs/outputs to the I/O modules. In a dual system, this also includes:
UCSB BOOT LED:
During the boot process, the Boot LED remains steadily lit unless an error is encountered. In the event of an error, the LED flashes at a 1 Hz rate—500 milliseconds on, followed by 500 milliseconds off. After completing the flash sequence, the LED remains off for three seconds. The number of flashes corresponds to the specific error code or failure state.
If the flash image is valid but the runtime firmware has not yet been loaded, the Boot LED will flash continuously at a 1 Hz rate. Once the firmware is successfully loaded, the LED turns off. If the controller fails to come online, the ToolboxST application should be used to diagnose the issue. After the controller receives an IP address, ToolboxST communicates over Ethernet for configuration and troubleshooting.
WOC has the largest stock of Replacement parts for GE Distributed Turbine Control Systems. We can also repair your faulty boards and supply unused and rebuilt boards backed up with a warranty. Our team of experts is available around the clock to support your OEM needs. Our team of experts at WOC is happy to assist you with any of your automation requirements. For pricing and availability on parts and repairs, kindly contact our team by phone or email.
What is IONet, and how does it function?
IONet is a private, Ethernet-based network protocol used exclusively by GE Mark* systems to connect controllers and I/O packs. It enables high-speed, deterministic communication between control components.
How is time synchronization handled?
Time synchronization between the UCSB controller and I/O packs is achieved using the IEEE 1588 Precision Time Protocol (PTP) over R, S, and T IONet channels, ensuring timing accuracy within ±100 microseconds.
How is safety handled in UCSB systems?
The UCSBH3A controller and Mark VIES Safety I/O are purpose-built for safety applications, certified to IEC 61508 for SIL 2 and SIL 3 levels. These components are strictly used in safety-instrumented systems and must be configured by trained SIS professionals.
