GE IS420UCSBH4A UCSB Universal Control System Blade

Technical Specifications

Model: IS420UCSBH4A

Part Number: IS420UCSBH4A

Brand: GE（GE Vernova）

Product Type: UCSB universal control system blade

Matching System: GE Speedtronic Mark VIe, EX2100e, LS2100e turbine control system

Processor: Intel EP80579, 1066MHz

Memory: 256MB DDR2 SDRAM, 512MB Flash memory

Operating System: QNX Neutrino real‑time operating system

Communication Interface: Multi‑port IONet redundant Ethernet interface

Redundancy Mode: Support simplex, dual and TMR triple‑modular redundant 2‑out‑of‑3 voting architecture

Installation: Mark VIe rack plug‑in installation

Operating Temperature:‑30℃ ~ +65℃, non‑condensing

Protection Class:IP20

Weight:1.10kg

Dimension:310mm ×170mm ×82mm

Compatible System:Gas‑steam turbine, generator unit, combined‑cycle power plant control cabinet

Core Function: IS420UCSBH4A UCSB main controller blade for Mark VIe turbine control system. It executes turbine control application algorithms, completes logic calculation, protection judgment and data interaction with remote I/O packs via IONet Ethernet. Supports TMR triple‑modular redundant voting, realizes turbine start‑stop regulation, over‑speed protection, interlock protection and unit closed‑loop control, applies to high‑reliability power generation equipment scenarios.

Product Details

The IS420UCSBH4A is UCSB universal control system blade for GE Speedtronic Mark VIe distributed turbine control system.

This rack‑mount controller blade runs QNX real‑time system, undertakes core computing tasks of the whole control system. It communicates with various I/O processing packs through multi‑port IONet redundant Ethernet, collects field vibration, analog and discrete signals, and outputs control commands to drive field actuators. TMR triple‑modular redundant hardware voting mechanism greatly improves system safety, avoids single‑point failure risk. On‑board status LED indicators facilitate on‑site status viewing and fault diagnosis.

Adopts industrial‑grade hardware and conformal coating protection, excellent anti‑vibration and anti‑electromagnetic‑interference performance, adapts to harsh working environment of power plant turbine hall, meets Class I Div2 hazardous‑area certification requirements.

It belongs to core main controller spare‑part for Mark VIe turbine control system, widely used in overhaul and renovation projects of gas‑steam turbine generating units.

It is important spare hardware for turbine control system debugging and defective IS420UCSBH4A blade replacement.