GE DS200TCQBG1BBA RST Overflow Card

GE DS200TCQBG1BBA RST Overflow Card

د.إ8,888.00

The DS200TCQBG1BBA is a core component installed permanently in the Mark V control panel’s I/O cores (R, S, or T).

1. High-Speed Pulse Rate Processing

  • Speed Inputs: The most critical function of the TCQB is often to receive, condition, and process pulse-rate signals from magnetic pickups or proximity probes that monitor the rotational speed of the gas or steam turbine and the generator.
  • Safety Critical: This data is essential for the turbine’s overspeed protection logic and for the primary governor control loops. The board is designed for the fast, accurate signal conditioning needed for these high-frequency inputs.

2. Extended Analog I/O

  • It provides additional or specialized analog input/output channels that are not accommodated by the main Analog I/O board (TCQA).2 This can include less common sensor types or a large number of signals that overflow the capacity of the primary I/O board.
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الوصف

The GE DS200TCQBG1BBA is an RST Extended Analog I/O Board for the GE Mark V Speedtronic Turbine Control System.1

While it is often called an “Overflow Card” or an “I/O Extender Board,” its primary function is to provide specialized and extended Analog and Pulse I/O capabilities, particularly for high-speed signals like turbine speed, complementing the main TCQA board.

The key to understanding this board is in its functional acronym TCQB and the full revision code G1BBA.

⚙️ Board Function and Role (TCQB)

The DS200TCQBG1BBA is a core component installed permanently in the Mark V control panel’s I/O cores (R, S, or T).

1. High-Speed Pulse Rate Processing

  • Speed Inputs: The most critical function of the TCQB is often to receive, condition, and process pulse-rate signals from magnetic pickups or proximity probes that monitor the rotational speed of the gas or steam turbine and the generator.
  • Safety Critical: This data is essential for the turbine’s overspeed protection logic and for the primary governor control loops. The board is designed for the fast, accurate signal conditioning needed for these high-frequency inputs.

2. Extended Analog I/O

  • It provides additional or specialized analog input/output channels that are not accommodated by the main Analog I/O board (TCQA).2 This can include less common sensor types or a large number of signals that overflow the capacity of the primary I/O board.

3. RST Redundancy (TMR)

  • The board is designated RST, meaning it is designed for a Triple Modular Redundancy (TMR) configuration. Three identical boards are typically installed (one in the R, S, and T cores), processing their respective redundant sensor inputs simultaneously.
  • This TMR setup ensures that if one board fails, the control system can continue operating without interruption by using the “voted” output from the two healthy boards.

🔍 Part Number Breakdown

Segment Meaning Detail
DS200 System Series Mark V (DS200 Series)
TCQB Functional Acronym Turbine Control Q/R/S/T Board (Specialized/Extended Analog & Pulse I/O)
G1 Major Hardware Revision The main design generation.
BBA Full Revision Code The specific combination of functional, assembly, and artwork revisions. Crucial for compatibility.

Revision ‘G1BBA’

The extensive suffix $\text{G1BBA}$ is critical. When procuring or replacing this board, the system requires this specific revision because the application software and PROM firmware on the main processor board are configured to expect the exact performance, timing, and pin-to-signal mapping associated with the $\text{G1BBA}$ hardware. Mismatched revisions can lead to communication errors, signal misinterpretation, or system trips.

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