GE DS200TCTSG1ACC Simplex Trip Board

الوصف

The GE DS200TCTSG1ACC Simplex Trip Board is a vital safety component for General Electric’s Speedtronic Mark V Turbine Control System.¹

It serves as the hardware module responsible for executing a controlled, immediate shutdown (a “trip”) of the turbine when critical safety limits are exceeded.²

⚙️ Function and Role in the Mark V System

The part number DS200TCTSG1ACC provides a breakdown of its identity and function:

• DS200: Identifies the board as part of the GE Mark V (or DS200 series) of turbine control printed circuit boards.³
• TCTS: Stands for Turbine Control Trip Simplex. This confirms its function as a safety trip circuit board, typically used in turbine applications where a Simplex (single-channel) protection configuration is employed, or as the trip logic in a larger TMR (Triple Modular Redundant) system.
• G1: Denotes the Group 1 hardware configuration of the Mark V system.⁴
• ACC: These are the revision codes, indicating that the board has received multiple updates to its circuitry and/or artwork over the original base design. Later revisions often include component improvements for reliability and compatibility.

Core Safety Function

The Simplex Trip Module’s sole purpose is turbine protection. It constantly monitors critical operating parameters and performs the following sequence when a fault occurs:

1. Fault Detection: It receives trip signals from the main control processors and hardwired sensors for conditions like overspeed, low lube oil pressure, excessive vibration, or an emergency stop.⁵
2. Trip Execution: It contains multiple plug-in relays (the TCTG/TCTS family of boards often use a set of relays, sometimes 12 or 21, for various trip functions).⁶
3. Physical Shutdown: When a trip is commanded, the board’s relays immediately de-energize the solenoids and hydraulic trip relays that control the turbine’s fuel or steam stop valves.⁷ This action physically cuts the fuel/steam supply, safely bringing the turbine to a stop and preventing catastrophic damage.⁸

Key Technical Specifications (Typical for this Family)