SPECIFICATIONS
Part No.: IS2020LNPSG3A
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Temperature: -30 to + 65oC
Product Type: Power Supply Board
Availability: In Stock
Series: Mark VI
Functional Description
IS2020LNPSG3A is a power supply board developed by GE. It is a part of Mark VI control system. Power sources for rack power supplies can come from various options to ensure reliability. One option is a battery, providing uninterrupted power in case of outages. Another option involves multiple power converters, which can step up or step down voltage as needed. Often, a combination of both battery and power converters is employed for added redundancy.
Features
- In the Power Distribution Module (PDM), these multiple power sources are connected in a configuration termed as high select. This setup ensures that if one power source fails, others can seamlessly take over, maintaining continuous power supply to the system.
- To create a stable and safe power distribution system, a balancing resistor network is utilized. This network generates a floating DC bus while maintaining a single ground connection. From the 125 V DC input, the resistor bridge divides the voltage, producing both +62.5 V DC (referred to as P125) and -62.5 V DC (referred to as N125). These voltages are then utilized to supply power to the system racks and terminal boards.
- Moreover, the Power Distribution Module is equipped with ground fault detection capabilities. This means it can identify if there's a single ground fault within the system. Importantly, even in the presence of such a fault, the system can continue to operate without performance degradation or blowing fuses. However, the fault is alarmed to prompt necessary repairs, ensuring the system remains in optimal condition.
Operating Systems
- HMIs and Servers: HMIs (Human-Machine Interfaces) and servers utilize CIMPLICITY software, which is designed for industrial automation and control applications. This software facilitates monitoring, control, and data acquisition tasks.
- Engineer's Workstation: The engineer's workstation runs toolbox software specifically tailored for system configuration tasks. This software likely provides tools and utilities for configuring and managing various components of the system.
- I/O System: Due to its Triple Modular Redundancy (TMR) requirements, the I/O system utilizes a proprietary executive system. This executive system is custom-designed to meet the specialized needs of the application, ensuring high reliability and fault tolerance.
- VCMI and I/O Boards: The operating system utilized in the VCMI (Vibration Condition Monitoring Interface) and all I/O boards is based on the proprietary executive system mentioned earlier. This ensures seamless integration and compatibility with the I/O system's TMR architecture.
- Controller: The controller employs the QNX operating system from QNX Software Systems Ltd. QNX is a real-time POSIX-compliant operating system renowned for its reliability and determinism. It is particularly well-suited for high-speed automation applications such as turbine control and protection, where precise timing and responsiveness are critical for system safety and efficiency.
The WOC team is always available to help you with your Mark VI requirements. For more information, please contact WOC.
Frequently Asked Questions
What is IS2020LNPSG3A?
It is a power supply board developed by GE under the Mark VI series.
What are the power sources for the rack power supplies?
The rack power supplies can be powered reliably by either a battery, multiple power converters, or a combination of both.
How are the multiple power sources connected in the Power Distribution Module (PDM)?
The multiple power sources are connected in a high select configuration within the Power Distribution Module to ensure redundancy and continuous power supply to the system.
How is a floating DC bus created in the system?
A balancing resistor network is employed to create a floating DC bus using a single ground connection. This network divides the 125 V DC input into +62.5 V DC (P125) and -62.5 V DC (N125), which are used to supply power to the system racks and terminal boards.
