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The GE DS200SLCCG4ACC LAN Communications Board is a printed circuit board (PCB) designed by General Electric for use in the Mark V Speedtronic Turbine Control System and associated drive/exciter applications.
Its main function is to serve as the Local Area Network (LAN) interface, facilitating data exchange and communication between the turbine’s control modules and other networked devices in the industrial environment.
Key Features and Role
- Primary Function (SLCC): The card, identified by the acronym SLCC (System/Serial LAN Communication Card), provides the necessary hardware and processing power to manage network communications for the control system.
- LAN Control Processor (LCP): It contains an integrated LAN Control Processor (LCP) which is the key microprocessor responsible for filtering, routing, and processing signals sent to and from the board via the network. The LCP’s software is typically stored in onboard EPROM memory cartridges.
- System Integration: It is vital for connecting the control system to external components like:
- Operator Interfaces (HMIs).
- Engineering Workstations.
- Higher-level Distributed Control Systems (DCS).
- Data Exchange: The board uses dual-ported RAM (Random Access Memory) to create a high-speed channel for communication between the LCP and the primary Drive Control Processor (DCP) on the main control board (like the DS215SDCC).
- Onboard Diagnostics: The card typically supports an attachable alphanumeric keypad and 16-position display (Programmer Module), which allows maintenance personnel to easily access system settings, read fault codes, and perform diagnostics locally on the unit.
- Part Number Breakdown:
- DS200: Identifies the board’s series, part of the GE Mark V turbine control family.
- SLCC: Functional acronym for LAN Communications Card.
- G4: Indicates the specific hardware group or version (Group 4) within the SLCC family.
- ACC: Denotes the functional and artwork revisions of the board, which are crucial for ensuring compatibility when replacing the unit.
The Mark V system is known for its Triple Modular Redundancy (TMR) architecture in critical controllers (R, S, T), and the SLCC plays a part in the overall communication infrastructure of this fault-tolerant system.
