GE DS200CTBAG1A Analog Termination Module

Configured for signal termination and bus communication in Mark V LM control systems, the GE DS200CTBAG1A (DS200CTBA Terminal Board) provides direct physical execution of analog signal routing and core power monitoring.

Hardware Specifications

Backplane Bus Communication and Deterministic Processing

The DS200CTBAG1A facilitates deterministic communication across Mark V LM platforms through integrated IONET and COREBUS interfaces. The board manages connectivity between the R5 core and the STCA/QTBA modules, ensuring signal integrity for 4-20 mA loops and shaft-specific instrumentation. In the event of a localized power loss on the CTBA module, an onboard bypass relay maintains COREBUS communication, preventing system-wide disruption. Connectivity with the PD core's TCPD board allows for continuous power source monitoring. Firmware flash compatibility is not supported; system integration is managed through hardware-defined signal paths and dedicated terminal wiring.

Frequently Asked Questions

Q: What is the function of the onboard bypass relay during a power failure?

A: The bypass relay is configured to maintain COREBUS communication continuity if the CTBA module experiences a loss of power. This allows other modules on the bus to continue data exchange without interruption.

Q: Can the 4-20 mA inputs be scaled via software?

A: No. The CTBA board acts as a passive termination point. Scaling of 4-20 mA signals must be performed within the higher-level controller logic of the connected STCA or R5 core processors.

Field Installation Guidelines

1. Ensure the Mark V LM rack is fully de-energized before mounting the module to prevent damage to the backplane connectors or unintended shorting of 4-20 mA loops.
2. Verify all field wiring for shaft instrumentation and 4-20 mA signals, ensuring proper shielding is terminated to the designated ground lug to minimize noise.
3. Handle the board by the edges to avoid electrostatic discharge (ESD) exposure to the bypass relay and bus communication circuitry.
4. After installation, confirm that the IONET and COREBUS link LEDs (if present on associated modules) indicate successful synchronization with the STCA and QTBA boards.