IS420UCSBH1A 2 IS420UCSBH1A 3 IS420UCSBH1A 4

The GE IS420UCSBH1A is a mission‑critical UCSB controller module from General Electric (GE), specifically engineered as the central processing unit within GE’s Mark VIe and Mark VIeS control systems. Built to execute complex real‑time control logic and coordinate high‑speed communication with I/O modules, this controller ensures deterministic performance and system reliability in power generation, turbine control, and other industrial automation environments. Its fanless, battery‑free design enhances long‑term service life and minimizes maintenance demands while supporting tough operational conditions.

Technical Specifications

Specification	Details
Brand	GE (General Electric)
Model	IS420UCSBH1A
Module Type	UCSB Controller Module
Compatible Systems	GE Mark VIe / Mark VIeS / EX2100e / LS2100e
Processor	Intel EP80579 @ 600 MHz
Memory	256 MB DDR2 SDRAM (ECC), 2 GB NAND Flash
Communication	IONet, standard Ethernet, RS‑232/485 interfaces
Operating System	QNX Neutrino real‑time OS
Power Supply	18–30 V DC (24–28 V nominal)
Operating Temp.	‑40 °C to +85 °C
Mounting	VME rack / panel mount compatible
Dimensions (L × W × H)	160 mm × 160 mm × 120 mm
Weight	0.80 kg
Certifications	UL E207685, ATEX Zone 2 Group IIC
Cooling	Fanless natural convection

The IS420UCSBH1A combines compact dimensions with rugged construction to enable installation in dense control cabinets and harsh industrial environments.

Recommended Related Models

GE IS420ESWAH1A – Industrial unmanaged Ethernet switch (8‑port)
GE IS420ESWBH1A – Industrial IONet Ethernet switch (16‑port)
GE IS420PPNGH1A – PROFINET gateway for integration with Ethernet field devices
GE IS420UCECH1B – UCEC controller with integrated expansion ports

These modules complement the UCSB controller to build scalable and resilient Mark VIe automation systems.

Popular Allen Bradley Models (For Reference)

For engineers familiar with Rockwell Automation, the following represent analogous control components:

Allen‑Bradley 1756‑L71 – ControlLogix CPU
Allen‑Bradley 1756‑EN2T – EtherNet/IP network module
Allen‑Bradley 1756‑PA75 – Power supply module
Allen‑Bradley 1756‑OB32 – Digital output module

These modules fulfill similar automation roles in Rockwell PLC platforms.

Applications

The GE IS420UCSBH1A is suited for:

Distributed control of gas and steam turbines
Real‑time automation in power generation plants
Mission‑critical industrial control systems
Synchronization and timing‑sensitive processes
High‑availability automation networks
Industrial cabinet and rack mount installations

Its deterministic control and robust communication make it ideal where precision, uptime, and safety are paramount.

Advantages

High‑Performance Processing: 600 MHz Intel core with ECC memory and 2 GB flash for fast logic execution.
Deterministic Real‑Time Control: Executes complex control algorithms with synchronized I/O coordination.
Rugged Industrial Design: Fanless, battery‑free construction reduces failure points and maintenance.
Wide Environmental Range: Capable of operating from ‑40 °C to +85 °C.
Comprehensive Protocol Support: IONet, Ethernet, and serial communication support flexible integration.
Certifications for Hazardous Locations: Suitable for Zone 2/Division 2 installations.

Technical FAQs

What is the GE IS420UCSBH1A used for?
It is the UCSB controller module that serves as the core processor in Mark VIe/VIeS automation systems.
What processor does it use?
A 600 MHz Intel EP80579 embedded CPU.
What operating system does the controller run?
The QNX Neutrino real‑time operating system.
What are its physical dimensions?
Approximately 160 mm × 160 mm × 120 mm.
How much does it weigh?
Around 0.80 kg.
What communications does it support?
IONet, standard Ethernet, and optional serial (RS‑232/485) interfaces.
What supply voltage does it require?
18–30 V DC (24–28 V nominal).
Can it operate in extreme temperatures?
Yes — typical range is ‑40 °C to +85 °C.
Is this module fan‑cooled?
No — it uses fanless natural convection cooling.
What certifications does it hold?
UL E207685 and ATEX Zone 2 Group IIC for hazardous environments.