GE DS200ACNAG1ADD Connection Card

The GE DS200ACNAG1ADD, also cataloged as the DS200ACNA ARCNET Connection Card, operates as a dedicated hardware component for LAN communication interfacing between the LDCC main processor and the turbine control operator interface within Mark V Speedtronic systems.

Suffix Breakdown & Model Matrix

Hardware Specifications

GE Industrial Control Characteristics

• Backplane bus communication velocity: The card facilitates high-speed ARCNET LAN data exchange. This is mandatory to ensure real-time communication between the turbine control operator interface and the LDCC processor, maintaining the timing required for triple-redundant control systems.
• Profinet / EtherNet/IP deterministic networks: While the board interfaces with legacy coaxial-based ARCNET, it serves as the physical layer gateway for the Mark V communication stack. This connectivity is mandatory to bridge turbine management data to the operator station.
• I/O density scaling: The compact board design is optimized for the Mark V rack interface, providing reliable signal termination for two coaxial LAN channels (labeled A and B).
• Firmware flash compatibility: The card functions as a passive/semi-active signal interface. Verification of physical LAN cable impedance and BNC termination is mandatory to ensure that signal reflections do not disrupt the integrity of the ARCNET protocol.

Frequently Asked Questions

Q: Are the two on-board relays replaceable?

A: The board utilizes two 58614-type relays for signal switching. While these are physical components, they are not intended for field-level maintenance. If relay failure occurs, the complete board should be replaced to maintain the reliability of the Speedtronic communication interface.

Q: How do the two BNC connectors (A and B) function within the network?

A: The BNC connectors (A and B) typically facilitate dual-path communication for redundant ARCNET LAN links. Ensuring both cables are correctly terminated and impedance-matched is mandatory to prevent packet collision and data loss on the network bus.

Field Installation Guidelines

• Mounting: Secure the board using the factory-drilled mounting holes and provide proper grounding via the GND1/GND2 points. A rigid mount is mandatory to prevent vibration-induced loosening of the coaxial BNC connections.
• Grounding: Verify that the ground washers are firmly seated against the rack chassis. A low-impedance connection to the main instrumentation earth is mandatory to prevent noise from inducing signal errors in the sensitive ARCNET coaxial cabling.
• Wiring: Connect coaxial cables to the BNC ports and ensure proper strain relief. Maintain a minimum separation of 150 mm from high-voltage AC cables. This isolation is mandatory to protect the high-frequency communication signals from electromagnetic interference, which is critical for maintaining valid network communication.