SPECIFICATIONS
Part No.: IS215VCMIH1CC
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Size: 10.16 cm wide x 33.02 cm high
Temperature: -30 to 65oC
Technology: Surface-mount
Product Type: Communication Board
Availability: In Stock
Series: Mark VI
Functional Description
IS215VCMIH1CC is a communication board developed by GE. It is a part of Mark VI control system. VCMI board serves as a vital component within the control and interface module, facilitating internal communication between I/O boards in its rack and other VCMI boards via the IONet.
Features
- Communication Capabilities: Internally communicates with the I/O boards within its rack and other VCMI boards through the IONet, a dedicated communication network within the system architecture.
- Simplex Version: Equipped with one Ethernet IONet port, primarily designed for simplex systems where a single control module is connected to one or multiple interface modules via a single cable.
- TMR Version: Incorporates three Ethernet ports tailored for Triple Modular Redundancy (TMR) systems. It serves communication purposes with three I/O channels (Rx, Sx, and Tx) and interfaces with two additional control modules within the system setup.
- Configuration in TMR Systems:In TMR systems, the VCMI with three separate IONet ports establishes connections with individual I/O channels (Rx, Sx, Tx), facilitating redundant communication among these channels and other control modules.
- Fault Tolerance Mechanism - SIFT Voting: Implemented Fault Tolerance (SIFT) voting methodology. Input data received from each IONet connection undergoes voting processes within the R, S, and T VCMI boards. The voting results are transmitted to the control signal database (labeled UCVx in the diagram) housed within the controllers via the backplane VME (Versa Module Eurocard) bus for further processing and decision-making.
- Redundancy and Reliability: The redundancy and fault-tolerant architecture, particularly in TMR systems, ensure robust communication pathways and data reliability, enhancing the system's overall reliability and resilience against failures.
System Power Source
- Power Source Redundancy-Reliable power is supplied to the rack power supplies through various sources:
- Battery Backup: Provides a dependable backup power source.
- Multiple Power Converters: These converters contribute to the primary power supply.
- Combination of Both: Utilizes a mix of battery backup and multiple power converters for enhanced redundancy.
- Redundancy Mechanism - High Select in PDM:
- The multiple power sources are linked as "high select" in the Power Distribution Module (PDM). This configuration ensures redundancy, enabling seamless switching between power sources to maintain continuous and stable power delivery.
- Balancing Resistor Network for Floating DC Bus:
- A balancing resistor network is employed to create a floating direct current (dc) bus while using a single ground connection.
- From the 125 V dc input, the resistor bridge generates two outputs:
- +62.5 V dc (referred to as P125)
- -62.5 V dc (referred to as N125)
- These outputs are utilized to supply power to the system racks and terminal boards.
- Ground Fault Detection and Tolerance:
- The Power Distribution Module (PDM) incorporates ground fault detection mechanisms.
- The system is designed to tolerate a single ground fault without any compromise in performance or blowing fuses.
- While this fault is promptly alarmed for quick identification, the system retains functionality without losing performance. Repairing the fault is possible once identified.
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 IS215VCMIH1CC?
It is a communication board developed by GE under the Mark VI series.
Which power supply buses are monitored internally?
The 5 V, 12 V, 15 V, and 28 V power supply buses are internally monitored.
What diagnostic signals are monitored from the Power Distribution Module (PDM) through J301?
Diagnostic signals from the PDM through J301 include ground fault, over/under voltage on the P125 V bus, two differential 5V dc analog inputs (P28A and PCOM), and digital inputs.
