Overview
The GE IS420UCSBH1A is a Universal Control Subsystem Board (UCSB) designed for the Mark VIe Speedtronic turbine control system. It functions as a central processing unit (CPU) for executing turbine control logic, managing protective functions, and coordinating communication with distributed I/O modules.
Unlike traditional PLCs, the IS420UCSBH1A does not host I/O directly. Instead, it communicates with I/O packs over IONet, a dedicated Ethernet-based network. This architecture ensures high reliability, redundancy, and precise synchronization across turbine control systems.
Technical Data
| Parameter | Specification |
|---|---|
| Part Number | IS420UCSBH1A |
| Product Type | UCSB Controller Module |
| Operating Temperature | –40 °C to +85 °C |
| Dimensions | 150 × 100 × 50 mm |
Typical Applications
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Gas turbine control systems in combined-cycle power plants.
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Steam turbine control systems for industrial and utility generation.
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Petrochemical and refining facilities requiring high-precision turbine control.
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Industrial automation networks needing reliable PLC-style controllers with redundancy.
Key Features
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Independent control logic execution: Does not require direct I/O hosting.
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IONet communication: Ensures secure and redundant data transfer across the system.
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IEEE 1588 synchronization: Provides precise timing for distributed modules with <100 microseconds accuracy.
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Fanless, battery-free design: Reduces maintenance requirements and improves reliability.
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Wide environmental tolerance: Rated for –40 °C to +85 °C and IP65 protection, suitable for harsh industrial conditions.
FAQ
Q1: What is the primary role of the IS420UCSBH1A module?
A1: The IS420UCSBH1A executes turbine control logic and communicates with I/O packs via IONet in Mark VIe systems.
Q2: How does it differ from traditional PLCs?
A2: Unlike traditional PLCs, the IS420UCSBH1A does not host I/O directly. Instead, it uses a dedicated Ethernet-based IONet network for communication with I/O packs.
Q3: How reliable is synchronization?
A3: The IS420UCSBH1A uses IEEE 1588 protocol to synchronize I/O components with <100 microseconds accuracy, ensuring precise timing and reliable control.
Q4: What environments can it operate in?
A4: The module is designed for extreme industrial conditions, with an operating temperature range of –40 °C to +85 °C and IP65 protection for harsh environments.
Q5: Why choose GE UCSB modules?
A5: GE UCSB modules provide high reliability, redundancy, and advanced communication features, making them ideal for turbine control systems where performance and uptime are critical.
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