Brand: GE General Electric
Model: DS200TCRAG2A
Type: Relay Output Terminal Board
Series: Mark V / Mark V LM
Functional Acronym: TCRA
Core Function: Relay Output Switching and Solenoid Control
Country of Origin: USA
Condition: New / Used / Refurbished
Availability: Industrial Spare Parts
Warranty: 12 Months
GE DS200TCRAG2A Relay Output Terminal Board
The GE DS200TCRAG2A is a TCRA Relay Output Terminal Board designed for GE Mark V and Mark V LM turbine control systems. It provides relay-based output switching within the digital I/O cores and is specifically associated with Q11 and Q51 core configurations.
The board contains up to 30 plug-in relays identified as K1 through K30. Depending on the core location and system configuration, only a portion of these relays may be used for a particular application. The relay outputs are routed through associated terminal boards to control solenoids, valves, and other field devices.
The DS200TCRAG2A is therefore an important interface component between the Mark V control logic and field-level relay-controlled equipment.
Main Functions
- Relay output control
The TCRA board provides multiple relay outputs for switching external control circuits. - Q11/Q51 core integration
The DS200TCRAG2A is designed for specific Mark V digital I/O core applications, particularly Q11 and Q51. - Solenoid power control
Depending on the associated terminal-board configuration, selected relays can be configured to provide power for solenoid outputs. - Turbine auxiliary control
In certain Q11 applications, relay outputs are used for gas-manifold blow-off valve control. - Interface with terminal boards
Relay outputs are routed through JS-series connectors to associated DTBC/DTBD terminal boards. - Hardware-based configuration
The TCRA board itself does not require software configuration. Relay functions are determined by the associated hardware configuration and terminal-board jumpers.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | GE General Electric |
| Part Number | DS200TCRAG2A |
| Functional Acronym | TCRA |
| Product Type | Relay Output Terminal Board |
| Series | Mark V / Mark V LM |
| Compatible Core | Q11 / Q51 |
| Relay Quantity | Up to 30 |
| Relay Identification | K1–K30 |
| Relay Contact Rating | 0.5 A per relay |
| Relay Configuration | Form-C / SPDT |
| Output Type | Relay contact output |
| Configuration | Hardware-based |
| Software Configuration | None |
| Primary Application | Turbine control |
| Associated Terminal Boards | DTBC / DTBD |
| Instruction Manual | GEH-6153 / related Mark V documentation |
The board is equipped with 30 plug-in relays in the full configuration. However, the actual number of active relays depends on the core location and application. This is important when replacing an installed board because “30 relays” does not necessarily mean all 30 channels are active in every Mark V installation.
Q11 and Q51 Core Applications
The operating configuration of the DS200TCRAG2A depends heavily on where the board is installed.
In a Q11 core application, only four relays may be used in the relevant core position. These relays are associated with the TCQE interface and can be used for gas-manifold blow-off valve functions in certain turbine configurations.
In Q51 applications, more of the available relay positions can be configured for solenoid power functions. The exact relay assignment depends on the associated DTBC/DTBD terminal-board configuration.
This core-specific behavior is one of the most important points to verify before replacing a DS200TCRAG2A.
Connector and Signal Interface
The DS200TCRAG2A uses multiple connectors for relay-control and output routing.
The JS1 through JS8 connectors are used to route relay outputs toward the associated DTBC or DTBD terminal boards. The JO connector provides the control-side interface for relay actuation signals.
The board also includes JOR, JOS, and JOT connectors, although these are not commonly used in standard TCRA applications.
The exact connector usage depends on the core position and installed Mark V configuration, so the customer’s existing wiring should always be checked before replacement.
How the Board Fits into the Mark V Architecture
The DS200TCRAG2A does not operate as an independent programmable controller.
A simplified signal path is:
Control processors → COREBUS / I/O processing → I/O interface boards → TCRA → relay outputs → DTBC/DTBD terminal boards → field devices
The TCRA board receives relay-control signals from the Mark V control architecture and switches the corresponding relay contacts. The terminal boards then provide the field-side connection and, where applicable, configure relay outputs for solenoid power applications.
This architecture allows the Mark V control system to operate a large number of turbine auxiliary devices while keeping the field wiring organized through dedicated terminal boards.
Typical Applications
The GE DS200TCRAG2A can be found in:
- Gas turbine control systems
- Steam turbine control systems
- Mark V LM Speedtronic systems
- Gas-manifold control circuits
- Blow-off valve control
- Solenoid power distribution
- Turbine auxiliary systems
- Ignition-related control circuits
- Industrial turbine maintenance
- Legacy Mark V control-system modernization
Because Mark V is a legacy turbine control platform, DS200TCRAG2A is particularly relevant to maintenance departments that need to keep existing turbine control cabinets operational without replacing the complete control system.
Replacement & Procurement Considerations
When sourcing a DS200TCRAG2A, buyers should verify more than the basic part number.
Recommended checks include:
- Exact GE part number: DS200TCRAG2A
- Functional acronym: TCRA
- Mark V or Mark V LM system
- Q11 or Q51 core application
- Core location
- Number of relays actually required
- Existing DTBC/DTBD terminal-board configuration
- Connector arrangement
- Relay condition
- Board revision and nameplate information
This is especially important because visually similar GE Mark V relay boards can have different functional configurations.
DS200TCRAG2A vs. Related TCRA Boards
The DS200TCRAG2A should not automatically be treated as interchangeable with every GE TCRA relay board.
For example, different DS200TCRA variants may have different group revisions, hardware configurations, or application-specific functions. The customer’s original nameplate and board markings should therefore be compared before offering an alternative.
For urgent maintenance requirements, an exact DS200TCRAG2A replacement is generally preferable to proposing a similar-looking relay output board without confirming the Mark V configuration.
Verification & Quality Control
Before shipment, each DS200TCRAG2A should be inspected for:
- Correct GE part number and board identification
- Revision information
- Relay quantity and relay condition
- Relay sockets and contacts
- PCB condition
- Connector condition
- Signs of corrosion or overheating
- Damaged components
- Loose or missing hardware
- Power and relay-function testing where applicable
For used or surplus inventory, actual photos of the front and rear PCB, nameplate, relays, and connectors are useful for customer confirmation.
Physical Information
Approximate third-party-listed board dimensions are around 16.8 × 3.6 × 24.9 cm, with a reported weight of approximately 0.55 kg. These values can vary depending on packaging and installed hardware, so they should be treated as reference values for freight estimation rather than certified shipping dimensions.
Related GE Models
GE DS200TCRAG1 – Mark V Relay Output Card
GE DS200TCRAG1A – Mark V Relay Output Board
GE DS200TCRAG2A – Mark V TCRA Relay Output Terminal Board
GE DS200TCQE – Mark V I/O interface board family
GE DS200DTBC – Mark V terminal board
GE DS200DTBD – Mark V terminal board
GE DS200TCDA – Mark V relay-control interface board
Related Tags
GE DS200TCRAG2A
GE TCRA Relay Output Board
DS200TCRAG2A Mark V
GE Mark V Relay Board
GE Mark V LM
GE Speedtronic
Q11 Relay Output
Q51 Relay Output
GE Turbine Control Board
GE Gas Turbine Control
Solenoid Output Board
Relay Output Terminal Board
Mark V Spare Parts
GE Industrial Automation Spare Parts
