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Product Brief Description
The GE 369B1873G5002 BDI11 Digital Input Base is an integral component of the GE Mark VIe control system. Similar to the BDI10 model, this terminal board is designed for use in simplex or dual-redundant systems. The key difference is that it offers an increased capacity, providing 24 channels for monitoring on/off signals, compared to the 16 channels of the BDI10. Its primary function is to act as a connection point for a higher density of discrete input signals, establishing a reliable interface between the field wiring and the control system.
Detailed Product Description
The 369B1873G5002 is part of a digital input configuration within the Mark VIe system. This board is designed to interface with either one or two I/O packs, depending on the redundancy level. The field wiring from up to 24 separate devices is connected directly to this board. The board then facilitates the transmission of these signals to the system’s controller(s) via the I/O pack(s).
The dual-redundant architecture ensures that if one I/O pack fails, the second one can continue to provide data to the controller. The control system’s logic performs a comparison to validate the input state. This design is ideal for applications that require a higher channel density and a reliable, redundant system, but do not necessitate the full fault-tolerance of a triple-redundant system.
Key Features and Specifications
- Part Number: 369B1873G5002
- Model Name: BDI11
- Module Type: Digital Input Base (Simplex or Dual-Redundant)
- Channels: 24 digital input channels
- Redundancy: Designed for a simplex or dual-redundant configuration, supporting one or two I/O packs.
- Input Type: Accepts discrete on/off signals.
- Primary Function: Provides wiring termination and signal distribution for digital input I/O packs.
- Compatibility: Used with specific Mark VIe digital input I/O packs.
Functional Role in a System
In a simplex or dual-redundant Mark VIe system, the 369B1873G5002 acts as a high-density hub for input signals. It allows for a single sensor in the field to be wired to the board, which then sends the signal(s) to the attached I/O pack(s) and, subsequently, to the system controller(s). This design is crucial for systems that need to monitor a larger number of discrete inputs without requiring a larger physical footprint for the terminal boards.
Common Applications
This type of digital input base is well-suited for systems that have a high concentration of discrete devices to monitor. It is commonly used in:
- Balance of Plant (BOP) Systems: Monitoring a greater number of non-critical components of a power plant, such as limit switches, alarms, and status indicators.
- General Process Control: Applications where a high number of on/off signals are needed to control and monitor a process.
- Monitoring and Data Acquisition: Larger systems focused on collecting extensive data from a wide range of discrete sensors for logging, analysis, and diagnostics.
