GE IS420UCSBH3A

IS420UCSBH3A is a UCSB (Universal Control System Block) controller module under the GE (General Electric) Mark VIe series, and it belongs to a standalone computer – type control unit. Designed specifically for running control logic in high – reliability industrial processes such as gas turbines and steam turbines, it serves as the core computing platform of the entire control system.

Main Technical Parameters

• Processor: Intel EP80579 with a main frequency of 1.2 GHz (1200 MHz)
• Operating System: QNX Neutrino real – time multitasking OS
• Memory/Storage: 1 GB RAM and 2 GB Flash
• Power Supply: 24/28 V DC input, with a power consumption of approximately 12 W (28.7 W at peak)
• Operating Temperature: 0 °C ~ 65 °C
• Protection Level: IP67, compliant with ANSI/ISA‑12.12.01‑2015 or CAN/CSA‑C22.2‑213‑15 standards
• Dimensions/Weight: Approximately H 6.4 in × W 8.1 in × D 1.4 in, and the weight is about 2.9 lb (≈ 1.3 kg)

Product Features

• Single – Module Integration: It has a built – in power supply, eliminating the need for external jumpers or batteries. Some models are equipped with dual redundant fans, which reduces maintenance requirements.
• Fanless/Battery – Free Design: Most models adopt a fanless and battery – free structure, enhancing reliability and simplifying installation.
• Rich Front – Panel Indicators: It includes LEDs for power, startup, online status, diagnosis, and OT (overtemperature), facilitating quick fault location.
• High – Speed Processing Capability: It has the fastest processor in the UCSB series, making it suitable for control tasks that have extremely high requirements for response time.
• Industrial – Grade Reliability: It meets the SIL 2/3 functional safety level and has characteristics such as vibration resistance and electromagnetic interference resistance.
• Standardized Communication: It supports IEEE 1588 precise clock synchronization and is compatible with R, S, and T IONet networks, enabling microsecond – level synchronization between I/O modules and the controller.

Structure and Composition

• CPU/Motherboard: A motherboard equipped with the EP80579 processor, integrated with power management circuits.
• Memory Module: A combination of DDR2 SDRAM and Flash storage.
• Front Panel: An array of LED indicators (for power, startup, online status, diagnosis, OT, ON, DC, etc.).
• Heat Dissipation Structure: Vertical airflow heat sinks, and some models are equipped with dual fan redundancy.
• Connection Ports: 24 V DC power input, Ethernet interface (with Link/Act LED to display link status), and dedicated ports for the IONet network.

Typical Application Fields

• Process control of gas turbines and steam turbines
• Large – scale industrial automation systems in power plants, petrochemical industry, oil refining, etc.
• Key control links that require high reliability, functional safety (SIL 2/3), and high – speed response
• Any industrial site that adopts the GE Mark VIe/MarkStat control platform

Installation Points

• Panel Installation: The module is directly fixed on the metal plate of the control panel. Ensure unobstructed vertical airflow to achieve natural heat dissipation.
• Power Connection: Use a 24/28 V DC power supply, follow the input voltage range, and check the polarity.
• Wiring and Jumping: Most models do not require jumper settings. If a model with dual fan redundancy is used, wiring should be done in accordance with the instruction manual.
• Environmental Requirements: The installation environment should meet the requirements of a temperature range of 0 °C ~ 65 °C, IP67 protection level, and safety requirements for Class I, Division 2, Groups A/B/C/D.
• Software Pre – installation: The factory pre – installs GE standard control software. On – site program downloading and online modification can be carried out via the network or USB.

Maintenance Recommendations

• Regular Inspection of LED Indicators: Abnormal lights (such as OT and ON) indicate overtemperature or recovery status, and timely investigation is required.
• Cleaning of Heat Sinks: Keep the heat sinks free of dust accumulation to ensure the effect of natural convection heat dissipation.
• Firmware/Software Upgrade: Perform version updates according to the patches or upgrade packages officially released by GE to maintain compatibility and security.
• Inspection of Power Supply and Connections: Regularly check the tightness and integrity of power cables and Ethernet cables to prevent communication interruptions caused by looseness.
• Recording of Operation Logs: Use the log function of the QNX system to save the operation status, which is convenient for fault tracing and performance analysis.

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