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IS420UCSBH1A GE Module Parts Mark VIe UCSB Standalone Controller Module
The GE IS420UCSBH1A is a UCSB standalone controller module designed for the GE Mark VIe distributed control system. It is also used in compatible EX2100e and LS2100e control applications.
The module serves as a central processing unit for industrial control applications. It executes control logic, processes system data, manages communication with distributed I/O modules, and exchanges information with operator and engineering stations.
The controller features an Intel EP80579 processor operating at 600 MHz and supports multiple Ethernet communication interfaces. It can be configured for simplex, dual, or triple-modular-redundant control architectures, depending on the overall system design.
The IS420UCSBH1A is suitable for turbine control, power generation, and other industrial automation applications requiring reliable real-time processing.
| Parameter | Specification |
|---|---|
| Manufacturer | General Electric (GE) |
| Model | IS420UCSBH1A |
| Product Type | UCSB Standalone Controller |
| Product Series | Mark VIe |
| Controller Family | UCSB |
| Processor | Intel EP80579 |
| Processor Speed | 600 MHz |
| Operating System | QNX Neutrino |
| Memory | 256 MB DDR2 SDRAM with ECC, as reported in product references |
| Flash Storage | 2 GB NAND flash |
| Ethernet Ports | 5 |
| IONet Interfaces | 3 × 10/100Base-TX Ethernet |
| Control Network Interfaces | 2 × 10/100Base-TX Ethernet |
| Communication Protocols | Ethernet Global Data (EGD), Modbus, OPC UA (firmware-dependent) |
| Time Synchronization | IEEE 1588 Precision Time Protocol |
| Input Voltage | 18–32 VDC |
| Nominal Supply Voltage | 24/28 VDC |
| Cooling Method | Convection cooling; fanless |
| Redundancy Options | Simplex, dual, and TMR, depending on system configuration |
| Operating Temperature | −30 to +65 °C |
| Battery | No battery required |
| Status Indicators | Power, boot, online, Ethernet link/activity, diagnostic status |
| Mounting | Industrial control cabinet / panel mounting |
The IS420UCSBH1A executes application-specific control logic for turbine and industrial automation systems. It processes analog and digital data received from distributed I/O modules and performs control calculations.
Three dedicated IONet interfaces connect the controller to distributed I/O modules. These networks support communication between the controller and field-level I/O packs.
Two additional Ethernet interfaces provide connections to operator interfaces, engineering workstations, historians, and other controllers.
The UCSB controller supports simplex, dual, and triple-modular-redundant configurations. In redundant applications, multiple controllers exchange status and synchronization information to maintain system reliability.
IEEE 1588 Precision Time Protocol supports accurate clock synchronization between controllers and I/O modules. This helps maintain consistent event timestamps and coordinated system operation.
Front-panel LED indicators provide information about power, boot status, online operation, network connectivity, and diagnostic conditions.
| Interface / Protocol | Function |
|---|---|
| IONet R | I/O network communication |
| IONet S | Redundant I/O network communication |
| IONet T | Third I/O network in TMR configurations |
| UDH Ethernet | Communication with HMI and engineering systems |
| CDH Ethernet | Peer-to-peer controller communication, when configured |
| Ethernet Global Data (EGD) | Real-time control-system data exchange |
| Modbus | Communication with compatible third-party devices |
| OPC UA | Data exchange with compatible systems, subject to firmware support |
| IEEE 1588 PTP | Clock synchronization |
The IS420UCSBH1A is a UCSB standalone controller module used in GE Mark VIe industrial control systems.
It uses an Intel EP80579 processor operating at 600 MHz.
It provides five Ethernet ports: three for IONet communication and two for the control network.
It uses the QNX Neutrino real-time operating system.
The documented input voltage range is 18–32 VDC.
GE Module Parts IS420UCSBH1A
,Mark VIe UCSB Controller Module
,Standalone Controller Module GE
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