GE DS200SLCCG3ADC Mark V LAN Communications Card

The GE DS200SLCCG3ADC operates as a dedicated hardware component for processing local area network (LAN) communication signals within General Electric Mark V Turbine Control System platforms.

Suffix Breakdown & Model Matrix

The board part number contains revision indices denoting factory modifications applied to the base design.

• DS200: Standard catalog code indicating a GE factory-assembled board.
• SLCC: Functional abbreviation indicating LAN Communications Card.
• G3: Group designation specifying the hardware architecture configuration.
• A: Functional product revision level A.
• D: Functional product revision level D.
• C: Artwork configuration revision level C.

Hardware Specifications

Turbine Control & System Networking

The DS200SLCCG3ADC coordinates signaling and bus communications between peripheral units and the primary drive logic.

• LAN Control Processor Execution: Communication packets received by the card are routed through the onboard LAN Control Processor (LCP). The processor acts as a dedicated subsystem manager, minimizing communication processing load on the main drive control board.
• Backplane Bus Communication Velocity Licences: The card interfaces directly with drive logic cards using high-speed dual-ported RAM. This architecture allows simultaneous read/write cycles, ensuring low-latency communication with key system units such as the IMCP, DCI, DCFB, and SDCI power supply interface boards.
• Isolated and Non-Isolated Circuitry: Signals are physically split across isolated and non-isolated pathways. The isolated ports provide high galvanic separation to protect internal logic from external line spikes, while non-isolated circuits handle local inter-board communications.

Frequently Asked Questions

• Q: How does the DS200SLCCG3ADC interface with ARCNET or DLAN networks?
• A: The board utilizes an ARCPL auxiliary communication card. This daughterboard handles physical layer routing, including isolated signal transmission through dedicated digital common (DCOM) lines and RS-422 ports.
• Q: What is the purpose of the four physical posts located on the board surface?
• A: The posts are structural elements located near the top of the card. They serve to protect the alphanumeric diagnostic display and prevent damage to the glass viewing window during handling and installation.
• Q: Can EPROM chips from an older SLCC model be swapped directly onto the G3ADC revision?
• A: Firmware compatibility depends on the revision level of the drive control system. Always check that the software versions programmed on the EPROMs match the functional revision level (A, D, and C modifications) of the replacement board.

Field Installation Guidelines

• Electrostatic Discharge Prevention: Keep the card inside its static-resistant protective bag until you are at an ESD-safe workstation. Wear a grounded wrist strap before touching any components on the board.
• Keypad Connection Security: Ensure the alphanumeric keypad programmer ribbon cable is aligned with the connector pins. Uneven insertion can cause pins to bend or create intermittent communication faults.
• Power Down Requirements: Shut down all electrical power to the drive cabinet before removing or inserting the communications card. Inserting the card while the backplane is energized can cause electrical damage to the dual-ported RAM.