I. Product Description
Model: IS420UCSBH3A (User inputs “З” as the number 3)
Brand: GE Vernova (formerly GE Energy)
System Platform: Speedtronic Mark VIe Generator / Turbine Control System
Full Name: UCSB Universal Control System Blade General Control Processor
Position: Core computing unit of the entire unit, independently executing speed regulation, protection, sequential control, and closed-loop regulation logic, equipped with IONet distributed IO rack
Core Hardware Configuration
Main Control Chip
Intel EP80579 Quad-Core Industrial Processor, with a clock speed of 1200 MHz Storage
256MB ECC error-correcting DDR2 memory (to prevent data errors during computation)
2GB NAND Flash, storing ControlST control program, historical alarms, and parameter curves
Operating System
QNX Neutrino real-time operating system, with millisecond-level control cycle, meeting high real-time requirements such as turbine overspeed protection Power supply
24VDC (with a voltage range of 18~36VDC), typical power consumption 17W, peak power 28.7W; no built-in backup battery, program permanent flash memory is saved
Heat dissipation
Passive cooling without fans, no vulnerable mechanical parts, suitable for long-term continuous operation of power stations
Communication interfaces (front panel)
Dual redundant IONet Ethernet (ENET1/ENET2)
Special industrial ring network, connects remote IO cards (IS200 series AI/DI/DO, TMR triple redundant IO)
Support IEEE 1588 PTP high-precision clock synchronization, station time error < 1μs
Ring network self-healing, single point failure without control interruption
Local debugging serial port
RS232, used for direct computer connection to ControlST for downloading programs, online monitoring, fault recording retrieval
Backplane high-speed bus
Internal interconnection of the rack, data exchange between multiple UCSB controllers, master-slave synchronization
Key functions
1. Core control operation of the unit
Gas turbine / steam turbine speed closed-loop, fuel valve regulation, temperature control, anti-surge algorithm
SIS safety protection logic: overspeed, overtemperature, vibration, low oil pressure emergency shutdown ESD circuit
Start-stop sequence control, auxiliary machine interlock, bypass / intake valve automatic adjustment
2. Redundant architecture support
Support 1:1 primary-standby dual UCSB redundancy, fault-free switching, switching time < 5ms
Compatible with TMR triple redundant IO, meets SIL2/SIL3 functional safety certification
3. Diagnosis and data recording
Multiple groups of LED status lights on the front panel: power, operation, online, communication, fault, overheating alarm
Built-in fault recording, SOE event sequence recording, operation curve storage, can be uploaded to HMI / upper SCADA
4. Software tools
Complementary ControlST software: logic configuration, parameter setting, online simulation, firmware upgrade, supports hot-swappable online update of programs, no need to stop operation
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