SPECIFICATIONS
Part No.: IS200WNPSH1AAA
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Number of buffered outputs: 14
N28 ripple: 280 mV pk
N28 maximum current: 400 mA
Temperature rating: 0 to 60 oC
Product Type: Power Supply Daughterboard
Availability: In Stock
Series: Mark VIe
Functional Description
IS200WNPSH1AAA is a power supply daughterboard developed by GE. It is a part of Mark VIe control system. The board embedded within the terminal system provides sophisticated diagnostic capabilities, including open circuit detection for vibration inputs and the utilization of ID devices within cable connectors to ensure hardware compatibility and prevent mismatches. These features enhance the system's reliability by promptly identifying potential issues and triggering alarms or faults for necessary attention and resolution.
Redundant Power Supply Configuration
- The redundant power supply configuration employed within the Terminal Voltage Board Assembly (TVBA) constitutes a foundational element of reliability and continuity within critical operational frameworks. At the heart of this configuration lies the reliance on three redundant external power supplies, meticulously orchestrated to guarantee the seamless and uninterrupted distribution of power.
- In the event of an unforeseen power supply failure, the system seamlessly transitions its operations to draw from the remaining functional power supplies. This strategic redundancy not only serves to mitigate potential disruptions to the terminal board's functionality but also bolsters the system's overall resilience, ensuring operational continuity even amidst component failures or system perturbations.
- To augment the efficacy of this redundant architecture, the TVBA incorporates three distinct removable daughterboards, each dedicated to overseeing the precise provision of +28 to -28V power conversion. By allocating specific responsibilities to these daughterboards, the system optimizes efficiency while simultaneously enhancing maintenance procedures and replacement protocols.
- This modular design affords several advantages, including streamlined maintenance activities and uninterrupted system operation during maintenance intervals. By compartmentalizing the power conversion process into discrete daughterboards, the TVBA minimizes downtime risks and maximizes operational uptime, thereby elevating the system's reliability and performance metrics.
- In essence, the redundant power supply configuration, complemented by the integration of removable daughterboards, exemplifies a proactive approach to ensuring continuous power delivery and sustained system functionality. Such meticulous design considerations instill confidence in the Mark VIe control system's reliability and robustness, positioning it as a dependable cornerstone within complex operational environments.
Removable Daughterboards and Online Maintenance
- During maintenance activities, the removal of daughterboards is meticulously orchestrated to ensure minimal disruption to ongoing operations. This process entails disconnecting the I/O pack power—designated as R, S, or T—and subsequently removing the Wireless Network Processing System (WNPS). By adhering to these prescribed steps, maintenance personnel can effectively access and replace the daughterboards without compromising the integrity of the TVBA or causing any interruption to the system's functionality.
- However, it's crucial to emphasize the importance of meticulous adherence to specific mounting requirements throughout the daughterboard removal and installation process. These mounting specifications are meticulously crafted to align with stringent vibration and seismic standards, ensuring that the TVBA maintains compliance with regulatory requirements and industry best practices.
- By meticulously following these mounting guidelines, maintenance personnel can mitigate the risk of inadvertent damage to the TVBA and uphold the system's robustness in the face of environmental stressors. Moreover, ensuring compliance with vibration and seismic standards safeguards against potential performance degradation or malfunctions resulting from inadequate mounting practices.
Power Distribution and Functionality
- WNPS Functionality: The WNPS (Wireless Network Processing System) utilizes the 28V bus from the corresponding channel (R, S, or T) to generate power necessary for vibration probes and various board chips requiring power. Each -28V supply includes a monitor feed that returns to the I/O pack for continuous monitoring purposes.
- TVBA Power Generation: The TVBA combines three -28 sources via diodes from the daughterboards to form the TVBA N28 bus. When configured with TMR (Triple Modular Redundancy) daughterboards, the TVBA can deliver sufficient current to supply 14 proximeters at 18 mA, 14 buffered outputs at 12 mA, with one channel operating at approximately 200 mA, totaling 540 mA without failure. This is achieved through current sharing among the supplies, facilitating such operational conditions.
Power Supply Specifications
- Input Voltage: The input voltage requirement mandates a nominal 28 volts with a permissible variance of ± 5%. This specification ensures that the power supply can accommodate fluctuations in the input voltage while maintaining consistent performance and reliability.
- Output Voltage: For the output voltage, the TVBA delivers a steady -28 volts, again with a tolerance of ± 5%. This voltage level is essential for powering various components within the control system, providing the necessary electrical potential for their operation.
- Output Ripple: The specification stipulates that the output ripple should not exceed 1% of the direct current (dc) value. This parameter is critical for ensuring that the output voltage remains stable and free from high-frequency fluctuations or noise, which could potentially impact the performance of sensitive electronic components.
- Maximum Output Current: The maximum output current, denoted as Iout, is capped at 400 milliamperes (mA). This specification delineates the maximum amount of current that the power supply can deliver reliably without exceeding its operational limits. Adhering to this constraint is vital for preventing overloading and safeguarding the integrity of the power supply and associated components.
Configuration
- The -28V power supply board, WNPS, serves to convert +28V from PVIB to -28V utilized by the current-limited -24V outputs.
- Each PVIB is equipped with one WNPS, featuring independent +28V inputs and a common -28V bus shared across all three WNPS units.
- The robust power supply redundancy and configurations within the TVBA ensure consistent and reliable power delivery, allowing for continued operation even during potential power supply failures, underscoring its reliability and operational resilience.
The WOC team is always available to help you with your Mark VIe requirements. For more information, please contact WOC.
Frequently Asked Questions
What is IS200WNPSH1AAA?
It is a power supply daughterboard developed by GE under the Mark VIe series.
How does the board identify and manage individual cable connectors on the terminal board?
Each cable connector on the terminal board contains an ID device that the I/O board interrogates. This read-only chip is encoded with vital information, including the terminal board's serial number, board type, revision number, and specific connector location (JR, JS, JT). Any discrepancy detected by the I/O processor while reading this chip triggers a hardware incompatibility fault.
What information is stored in the ID device of each cable connector?
The ID device embedded within the cable connector contains crucial data such as the terminal board's unique serial number, its board type, revision number, and the precise location of the connector within the JR, JS, or JT layout.
