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The GE DS200TCRAG2A Relay Output Board is a crucial component of the GE Speedtronic Mark V turbine control system.1 It serves the function of translating control logic into physical switching actions within the system’s architecture.
⚙️ Key Specifications and Function
| Specification | Detail |
| Part Number | DS200TCRAG2A |
| Product Type | Relay Output Board (Functional Acronym: TCRA) |
| Series | GE Speedtronic Mark V Gas Turbine Control Systems |
| Function | Provides reliable switching and integration for controlling external devices (like solenoids and valves) by managing and controlling relay outputs. |
| Location | Used in the Q11 and Q51 digital I/O cores of the Mark V system, with two TCRA boards typically present in each core. |
| Relays | Populated with up to 30 plug-in relays ($\text{K1}$ through $\text{K30}$). |
| Contact Rating | Each relay typically has a 0.5 amp contact rating. |
| Configuration | Hardware Configuration is possible through external terminal boards (like DTBC and DTBD) via hardware jumpers. This is used to set up some relays to provide a power source for solenoid outputs. |
| Instruction Manual | Detailed in the GEH-6153 Instruction Manual (and sometimes referenced in GEH-6353). |
Important Function Details by Core Location
The functionality and connections of the DS200TCRAG2A vary slightly depending on which core it is installed in:
- Q11 Core: The TCRA board in core location 4 may contain only four relays.2 These are often used to operate the gas manifold blow-off valves in certain applications.
- Q51 Core: The TCRA board in the Q51 core may have its first eighteen relays configured to provide a power source for solenoid outputs.3
Revisions
The suffix “G2A” indicates that this is the second major functional revision (“G2”) with the first artwork/minor revision (“A”).
The Relay Output Board is an indispensable component for automating processes in the turbine control system, receiving its instruction signals from other control boards (like the TCDA boards) within the digital core.4
