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GE DS200TBQCG1A Analog Input / Milliamp I/O Termination Module

Configured for analog signal acquisition, conditioning, and field termination in the Mark V Speedtronic turbine control system, the GE DS200TBQCG1A (DS200TBQC Analog Input / Milliamp I/O Termination Module) provides direct electrical interface between field devices and the TCQA board installed within the RST control cores. The DS200TBQCG1A supports 4-20 mA signal routing, LVDT/R position inputs, and configurable milliamp output channels through dedicated terminal and connector assemblies.

Suffix Breakdown & Model Matrix

The available revision variants identify hardware revision levels rather than different functional products.

Model	Description
DS200TBQCG1A	Base Analog Input / Milliamp I/O Termination Module
DS200TBQCG1AAA	Hardware revision variant
DS200TBQCG1ABB	Hardware revision variant

Hardware Specifications

Parameter	Specification
Model	DS200TBQCG1A
Brand	GE General Electric
Origin	United States
Product Type	Analog Input / Milliamp I/O Termination Module
Series	Mark V Speedtronic (DS200)
Functional Description	RST Analog Termination Board
Functional Acronym	TBQC
Installation Location	RST cores (R1, R2, R3), Position 9
Interface Board	TCQA Board
Analog Inputs	4-20 mA input channels
Position Inputs	LVDT/R position inputs
Analog Outputs	Configurable 20 mA or 200 mA output range
Terminal Blocks	2 terminal blocks (TB1, TB2), 166 total terminals
Connectors	3 x 40-pin, 3 x 34-pin, 1 x TEST port
Jumper Configuration	BJ1-BJ17 hardware jumpers
PCB Coating	Normal Coating
Operating Temp	-20 deg C to +60 deg C
Protection Rating	IP20
Weight	Approximately 0.35 kg to 0.75 kg
Power Consumption	Not specified by manufacturer

Backplane Communication and Firmware Compatibility

The module exchanges field I/O signals with the associated TCQA board through dedicated multi-pin connectors installed within the Mark V backplane architecture. JBR transfers 4-20 mA input and output current signals, while JFR carries LVDT/R position signals. Auxiliary headers (JBS, JBT, JFS, and JFT) are reserved for system expansion or background functions. Hardware jumpers provide local channel configuration without altering application firmware. Compatibility should be verified against the installed Mark V hardware revision before replacement.

Frequently Asked Questions

Q: Does the DS200TBQCG1A support hot-swapping during turbine operation?
A: The supplied documentation does not specify hot-swap capability. Installation or replacement should follow the controller maintenance procedure with power removed from the affected hardware.

Q: What is the purpose of jumpers BJ16 and BJ17?
A: BJ16 and BJ17 select the maximum output current range for the two milliamp output channels, allowing configuration for either 20 mA or 200 mA operation.

Q: What is the function of the TEST connector?
A: The TEST port provides a diagnostic connection for field measurement and maintenance activities using appropriate test instruments.

Field Installation Guidelines

• Verify that the module is installed in the designated RST core position before connecting field wiring.
• Label conductors according to the TB1 and TB2 terminal numbering to maintain traceability during maintenance.
• Route analog signal wiring separately from high-voltage or high-current conductors to reduce electrical interference.
• Terminate cable shields according to the control cabinet grounding practice and avoid multiple shield ground points unless specified by the system design.
• Confirm jumper positions before energizing the system, particularly BJ16 and BJ17 when configuring output current ranges.
• Inspect all multi-pin connectors for complete engagement before returning the controller to service.

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