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- DS200TCRAG1ACC
- Relay Output Board
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- 220 × 100 × 25 mm
- 1.66 kg
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Product Overview
The GE DS200TCRAG1ACC MARK V Relay Output Board is a specialized relay interface board designed for the GE Mark V Speedtronic turbine control system. It belongs to the DS200 series and is identified by the functional acronym TCRA.
The board provides relay-based discrete output capability between the Mark V control architecture and external field circuits. It is designed to receive control signals from the turbine control system and provide corresponding relay outputs for connected equipment, status circuits, alarms, interlocks, and auxiliary control functions.
The DS200TCRAG1ACC is equipped with 30 plug-in relays, providing a substantial number of discrete relay interfaces within a single Mark V board. It also includes multiple multi-pin connectors for communication and signal connections with other components in the turbine control architecture.
This board is not an independent PLC or turbine controller. Instead, it functions as part of the Mark V digital I/O structure, working together with control processors, digital I/O cores, terminal boards, and associated interface boards.
The specified dimensions of the DS200TCRAG1ACC are 220 × 100 × 25 mm, while the specified weight is 1.66 kg.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | GE |
| Model | DS200TCRAG1ACC |
| Product Series | Mark V DS200 |
| Product Type | Relay Output Board |
| Functional Acronym | TCRA |
| Control System | GE Mark V Speedtronic |
| Main Function | Relay-based discrete output interface |
| Number of Relays | 30 plug-in relays |
| Relay Contact Rating | 0.5 A |
| 34-Pin Connectors | 4 |
| 12-Pin Connectors | 4 |
| 34-Pin Connector IDs | JOR, JOS, JOT, JO |
| 12-Pin Connector IDs | JS3, JS4, JS5, JS6 |
| Dimensions | 220 × 100 × 25 mm |
| Weight | 1.66 kg |
| Board Type | Industrial turbine-control PCB |
| Installation | Mark V control cabinet |
| Application | Turbine control and discrete output |
| Signal Type | Relay / discrete output |
| Typical Equipment | Gas turbines, steam turbines and power-generation systems |
| System Architecture | Mark V digital I/O |
Function and Working Principle
The primary function of the DS200TCRAG1ACC is to provide relay output capability within the GE Mark V turbine control architecture.
The Mark V control processors generate discrete commands according to the programmed turbine-control logic. These commands are transferred through the digital I/O architecture to the appropriate relay output circuitry.
A simplified signal path can be represented as:
Mark V Control Processor → Digital I/O Core → DS200TCRAG1ACC → Relay Output → Terminal Interface → External Device
When a control command is received, the corresponding relay changes state. The relay contacts can then provide a discrete electrical signal to connected field equipment.
The board contains 30 plug-in relays, making it suitable for systems requiring numerous discrete output channels.
Depending on the specific turbine configuration, relay outputs may be associated with:
- Solenoid operation
- Alarm indication
- Equipment status
- Interlocking
- Permissive signals
- Auxiliary equipment
- Turbine control commands
- Shutdown-related circuits
- Status transfer to other control equipment
The exact function assigned to each relay depends on the turbine-specific wiring and Mark V system configuration.
The DS200TCRAG1ACC therefore serves as an interface between electronic turbine-control logic and external discrete electrical circuits.
Role in Industrial Control Systems
The DS200TCRAG1ACC plays an important role in the digital output section of the GE Mark V turbine control system.
Turbine automation requires both input and output functions. Sensors provide information to the control system, while output devices receive commands from the control processors.
Relay output boards provide the electrical interface required to connect control logic with external equipment.
The DS200TCRAG1ACC may work together with:
- Mark V digital I/O cores
- Common data processors
- Control processor boards
- Terminal boards
- DTBC interface boards
- DTBD interface boards
- TCDA-related interface hardware
- Solenoid circuits
- Alarm systems
- Interlock circuits
- Auxiliary equipment
- Turbine protection interfaces
The board does not normally execute turbine-control logic itself. Instead, it carries out the relay-output portion of commands generated by the Mark V control system.
This separation between processing and field output allows the Mark V architecture to handle complex turbine-control applications while maintaining a structured I/O system.
Industrial Applications
The GE DS200TCRAG1ACC is primarily used in GE Mark V Speedtronic turbine control systems.
Typical applications include:
- Gas turbine control
- Steam turbine control
- Combined-cycle power plants
- Turbine generator systems
- Industrial turbine packages
- Mechanical-drive turbines
- Compressor-drive turbine systems
- Power-generation automation
- Turbine auxiliary systems
- Discrete alarm systems
- Equipment interlocking
- Industrial process control
- Legacy GE Speedtronic installations
Relay outputs are particularly useful when the control system needs to provide discrete commands to external equipment.
For example, a relay output may be used to activate an auxiliary device, provide a status indication, energize a solenoid circuit, or transmit an interlock condition to another section of the plant control system.
Installation and System Integration
Proper installation is essential because the DS200TCRAG1ACC contains numerous relays and multiple connectors.
Before replacing the board, maintenance personnel should record the original cable configuration and identify each connector.
Recommended installation procedures include:
- Follow the approved turbine shutdown procedure.
- Isolate the relevant control-system power.
- Verify the complete DS200TCRAG1ACC part number.
- Record the board revision information.
- Document all cable positions.
- Identify the JOR, JOS, JOT and JO connectors.
- Identify the JS3, JS4, JS5 and JS6 connectors.
- Record the original cable orientation.
- Inspect the replacement board for physical damage.
- Check the connectors and relay components.
- Install the board in the designated Mark V cabinet position.
- Reconnect all cables according to the original configuration.
- Verify associated terminal-board connections.
- Restore power according to the approved procedure.
- Check Mark V diagnostic indications.
- Verify relay output operation.
- Confirm expected field-device responses.
- Perform system-level functional testing.
Because the board contains multiple plug-in relays, care should be taken during handling and installation.
Appropriate electrostatic-discharge precautions should also be used when handling the PCB.
The relay output circuits should be checked carefully after installation because an incorrect connection can cause an external device to operate unexpectedly.
Compatible System Components
The DS200TCRAG1ACC is normally integrated with several components within the GE Mark V architecture.
| Component | Function |
|---|---|
| Mark V Digital I/O Core | Transfers discrete signals between processors and field interfaces |
| Common Data Processor | Supports Mark V system data processing |
| Control Processor Board | Executes turbine-control logic |
| Terminal Boards | Provide field wiring connections |
| DTBC Board | Supports relay-output configuration and interface functions |
| DTBD Board | Provides additional relay-interface capability |
| TCDA Hardware | Supports associated turbine-control interface functions |
| Solenoid Devices | Receive discrete control commands |
| Alarm Circuits | Provide system and equipment status |
| Interlock Circuits | Implement permissive and control conditions |
| Auxiliary Equipment | Receives discrete turbine-control commands |
The exact combination of components depends on the individual turbine and Mark V cabinet configuration.
Recommended Alternative Models
The following models may be considered when evaluating related GE Mark V relay-output and I/O hardware:
| Model | Type | Key Feature | Application |
|---|---|---|---|
| DS200TCRAG1ACC | Relay Output Board | 30 plug-in relays | Mark V discrete output |
| DS200TCRAG1ABC | Relay Output Board | TCRA relay interface | Mark V relay output |
| DS200TCRAG1AAA | Relay Output Board | Related TCRA configuration | Turbine control |
| DS200TCRAG2ABC | Relay Output Board | Turbine relay interface | Mark V output systems |
| DS200TCQBG1BCB | Analog I/O Expansion Board | Extended analog I/O | Mark V I/O expansion |
These models belong to related Mark V control hardware families, but they should not automatically be considered direct replacements.
Relay-output boards and analog I/O boards have different functions. Even boards within the same TCRA family can have different revisions, connector arrangements, signal assignments, and system applications.
The complete part number and original system configuration should always be checked before selecting an alternative.
Key Advantages
The GE DS200TCRAG1ACC provides several advantages for Mark V turbine-control applications:
- Provides 30 relay output channels
- Supports GE Mark V digital I/O architecture
- Provides discrete field-device interfacing
- Supports solenoid control
- Supports alarm and status circuits
- Supports interlock and permissive functions
- Interfaces control processors with external equipment
- Provides multiple dedicated control-system connectors
- Suitable for turbine automation applications
- Supports maintenance of legacy GE Speedtronic systems
- Provides a compact relay-output solution
- Designed for integration into existing Mark V control cabinets
Its primary advantage is providing a centralized relay interface for numerous discrete control signals within the Mark V turbine-control architecture.
Technical FAQs
What is GE DS200TCRAG1ACC?
The GE DS200TCRAG1ACC is a MARK V Relay Output Board designed to provide relay-based discrete outputs within the GE Speedtronic turbine control system.
How many relays are installed on DS200TCRAG1ACC?
The board contains 30 plug-in relays.
What is the relay contact rating?
The relay contacts are rated at 0.5 A.
What are the dimensions of DS200TCRAG1ACC?
The specified dimensions are 220 × 100 × 25 mm.
What is the weight of DS200TCRAG1ACC?
The specified weight is 1.66 kg.
What connectors are used on DS200TCRAG1ACC?
The board has four 34-pin connectors identified as JOR, JOS, JOT and JO, together with four 12-pin connectors identified as JS3, JS4, JS5 and JS6.
What is DS200TCRAG1ACC used for?
It is used to provide relay-based discrete output signals for turbine control, alarms, interlocks, solenoids, auxiliary equipment, and other field circuits depending on the Mark V configuration.
Is DS200TCRAG1ACC an analog I/O board?
No. It is a relay output board designed primarily for discrete output functions.
Is DS200TCRAG1ACC a processor board?
No. The board provides relay-output functions, while dedicated Mark V processor hardware executes the turbine-control logic.
Can DS200TCRAG1ABC replace DS200TCRAG1ACC?
It should not be assumed to be a direct replacement. The complete part number, revision, connector configuration, output assignments, and system architecture should be verified before substitution.
What should be checked before replacing DS200TCRAG1ACC?
Maintenance personnel should verify the complete part number, board revision, connector arrangement, relay configuration, terminal-board wiring, output assignments, and Mark V system configuration.
Conclusion
The GE DS200TCRAG1ACC MARK V Relay Output Board is a specialized relay interface component designed for GE Mark V Speedtronic turbine control systems.
With 30 plug-in relays, four 34-pin connectors, and four 12-pin connectors, the board provides the discrete output interface required to connect Mark V control logic with external turbine equipment and electrical circuits.
The specified dimensions are 220 × 100 × 25 mm, with a weight of 1.66 kg.
The DS200TCRAG1ACC works together with Mark V digital I/O cores, control processors, terminal boards, DTBC/DTBD interface hardware, TCDA-related components, and external field devices.
For maintenance engineers, system integrators, and procurement teams, accurate identification of the complete DS200TCRAG1ACC part number is essential. Related Mark V boards may appear similar but can have different functions, revisions, connector configurations, and electrical assignments.
When correctly matched with the existing Mark V configuration, the DS200TCRAG1ACC provides a practical and reliable relay-output solution for maintaining discrete control, alarm, interlock, and auxiliary equipment interfaces in legacy GE turbine automation systems.