Description

GE DS200CTBAG1A Mark V Terminal Board

The GE DS200CTBAG1A, also cataloged as the DS200CTBA Terminal Board, operates as a dedicated hardware component for analog and digital signal termination within the Speedtronic Mark V turbine control system. It provides physical field wiring interfaces between the Common Data Processor, I/O circuits, and communication networks while supporting signal routing through the system backplane.

Suffix Breakdown & Model Matrix

The available documentation identifies DS200CTBAG1A as a complete ordering model. No official manufacturer documentation included in the provided data defines a suffix-level breakdown for the model designation. Therefore, no suffix interpretation is provided.

Hardware Specifications

Parameter	Specification
Model	DS200CTBAG1A
Brand	GE (General Electric)
Operating Temp	-28 deg C to 55 deg C (one referenced specification)
Product Type	Analog/Digital Terminal Board (CTBA)
Series	Speedtronic Mark V / Mark V LM
Functional Description	Analog Termination Module
Installation Location	C Core control frame
Signal Interface	Analog inputs, analog outputs, terminal screw block connections
Supported Signal Type	4-20 mA analog signals, digital field signal termination
Communication Interfaces	IONET, ARCNET processor interface, RS-232 9-pin D-sub (TIMN diagnostics)
Circuit Protection	23 metal oxide varistors (MOVs), 7 diodes, resistor networks
Mounting	Factory-drilled mounting holes

Backplane Communication and I/O Signal Integration

The DS200CTBAG1A functions as a field termination interface between external wiring and the Mark V control architecture. Analog and digital field signals terminate on the board before being transferred to the Common Data Processor through the control system backplane. Communication with system components is supported through IONET and ARCNET interfaces, while the onboard RS-232 connector provides diagnostic access for TIMN functions.

Protective circuitry consisting of metal oxide varistors, diodes, and resistor networks is incorporated to reduce the effects of transient electrical events on connected signal channels. The terminal board is designed for fixed installation within the designated control frame using the factory mounting holes.

Frequently Asked Questions

Q: Does the DS200CTBAG1A support hot-swapping while the control system is energized?
A: The supplied documentation does not specify hot-swap capability. Replacement should follow the maintenance procedure defined for the Mark V control system with power isolation where required.

Q: Which communication interfaces are available on the board?
A: The board provides interfaces for IONET, ARCNET processor communication, and an RS-232 9-pin D-sub diagnostic connection identified for TIMN diagnostics.

Q: What types of field signals terminate on this board?
A: The documentation identifies termination for analog input and output circuits, including 4-20 mA signals, together with associated digital field wiring.

Field Installation Guidelines

• Verify the board part number and revision before installation.
• Install the board only in the designated C Core location specified for the Mark V control frame.
• Tighten terminal connections according to the equipment maintenance documentation to prevent loose field wiring.
• Route analog signal wiring separately from high-voltage or high-current conductors to minimize electrical interference.
• Terminate cable shields according to the system grounding practice to reduce conducted noise.
• Inspect the board and connectors for contamination or mechanical damage before energizing the control system.

Specifications

• Brand: General Electric

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems