• Part Number: DS200ACNAG1A | Abbreviation: ACNA | Brand: General Electric | Compatible System: Mark V / EX2000 / DC2000
• Version distinction: DS200ACNAG1 = blank bare PCB; DS200ACNAG1A = standard finished assembly; DS200ACNAG1ADD = enhanced reinforced assembly
• Communication Protocol: Token-passing ARCNET industrial real-time bus, baud rate 2.5Mbps, deterministic cycle for turbine control synchronization
• External Interfaces: Dual female BNC coaxial connectors for daisy-chain ARCNET network wiring, supports two-way cable termination
• Internal Connector: 6-pin vertical ARCPL backplane terminal for docking LDCC main control board internal bus
• Onboard Hardware: 2 communication isolation relays, resistors, filter capacitors, surge suppression diodes fully pre-soldered
• Signal Detection Circuit: Built-in excitation field ground fault, diode damage and field abnormal alarm signal acquisition channel
• Rack Power Supply: +5VDC logic power supplied by Mark V rack backplane, low ripple filter circuit integrated
• PCB Protection: Standard factory conformal coating, anti-dust, moisture and corrosive gas for power plant cabinet environments
• Mounting Form: Compact auxiliary daughterboard, installed inside control rack without occupying independent main slots
• Operating Temperature: -30°C ~ +65°C | Storage Temperature: -40°C ~ +85°C
• Certifications: CE, UL industrial EMC anti-interference, power generation safety standard compliance
• Net Weight: Approx. 120g, compact small-size PCB layout

• Token-based ARCNET bus architecture eliminates data collision, guarantees microsecond-level synchronous transmission of critical excitation and turbine protection signals
• Dual BNC coaxial ports support daisy-chain topology, expand access for multiple HMI mini-terminals and auxiliary drive control nodes
• Dual onboard isolation relays realize electrical isolation between main processor and local operation panel, avoid signal cross-interference
• Dedicated excitation fault detection circuit collects field ground short-circuit, power component damage abnormal signals and upload to CPU via ARCNET bus
• Complete built-in communication self-diagnosis logic, real-time alarm for bus disconnection, signal attenuation, board power loss and channel faults
• Compact daughterboard design saves cabinet installation space, cooperates with AAHA ARCNET hub board to form complete rack communication network
• Fully backward compatible with DS200AAHAH1A/2A ARCNET hub board, DS200CPU main board and 323A2374P3 local mini-terminal
• Supports power-off replacement under redundant rack configuration, no full unit shutdown required during on-site maintenance overhaul

• Thermal & Combined Cycle Power Plant: EX2000 generator excitation cabinet ARCNET communication link board, Mark V gas/steam turbine auxiliary control rack
• Hydropower Station: Large hydro generator excitation regulator internal network signal transmission unit
• Oil & Gas Industry: Offshore platform turbine generator excitation cabinet communication spare part
• Industrial Cogeneration Station: Reciprocating engine generator set EX2000 excitation control communication equipment
• Equipment Retrofit & Maintenance: Direct replacement spare assembly for aging Mark V ACNA communication modules

Product Picture