Product Overview

The General Electric IS420UCSBH1A is a UCSB controller module used in Mark VIe and Mark VIeS control architectures for turbine automation and safety-capable control strategies. It operates as an embedded real-time controller, executing application logic and coordinating data exchange with distributed I/O packs over a dedicated Ethernet-based I/O network.

In Mark VIe environments, the controller is commonly applied where deterministic execution, centralized diagnostics, and scalable redundancy options are required. The design avoids serviceable batteries and manual jumper settings, supporting simplified maintenance and consistent configuration management through GE engineering tools.

Key Technical Characteristics

• Model / order number: IS420UCSBH1A

• Product series: Mark VIe

• Module type: UCSB controller module

• Primary role: Real-time controller for Mark VIe and Mark VIeS systems

• Processor: Intel EP80579 microprocessor, 1066 MHz

• Operating system: QNX Neutrino real-time OS

• I/O network interface: IONet dedicated Ethernet for Mark-controlled devices

• Supported architectures: Simplex, dual redundant, triple redundant system configurations

• Power input range: 18 to 30 VDC

• Nominal supply range: 24 to 28 VDC

• Maximum current draw: 1.5 A DC

• Safety support: Mark VIeS capability for SIL 2 and SIL 3 safety applications

• Memory and updates: Flash-based storage for firmware and update management

• Hardware design notes: No jumpers, no batteries

• Cooling feature note: Some configurations include redundant fan options

• Condition: Brand new

• Product lifecycle status: Active

• Country of origin: USA

• Availability: In stock

• Minimum order quantity: 1

• Approximate dimensions: 5.5 × 12.3 × 20.3 cm

• Approximate weight: 1.52 kg

• HS code: 8537101190

• System application: DCS and turbine control cabinets

• Communication service: Ethernet router

Industrial Applications

• Gas turbine control systems using Mark VIe controller architecture

• Mark VIeS safety-capable applications implementing safety instrumented functions

• Distributed I/O pack systems requiring deterministic Ethernet-based data exchange

• Turbine retrofit projects retaining Mark VIe control and IONet infrastructure

• Installed-base replacement for UCSB controller modules in power generation sites