Description
DS3800HMAC1H1F: Product Overview
The DS3800HMAC1H1F is a daughterboard-grade media-access unit that occupies a 6BA06 slot in the GE Speedtronic Mark IV rack. It acts as the high-speed communications gateway, buffering and routing real-time data between the central CPU and external systems such as plant DCS, remote I/O clusters, operator HMI, and third-party SCADA. The card is hardware-deterministic (no firmware download) and suitable for safety-related data exchange when triple-redundant.
Physical implementation includes differential line drivers, galvanic isolation, surge suppressors, and dual 34-pin ribbon connectors that mate with the VME back-plane. Front-edge LEDs indicate link activity, collision, and fault status—no laptop required for quick health checks. Conformal coat and gold-plated edge fingers ensure 25-year contact life in high-vibration, salt-fog, or coal-dust environments.
Environmental qualification meets –20 °C to +60 °C, 40 W dissipation, IEEE 344 seismic, and CE / RoHS compliance, giving >25-year service life in baseload duty.
GE DS3800HMAC1H1F
DS3800HMAC1H1F: Technical Specifications
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Model Number: DS3800HMAC1H1F
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Manufacturer: General Electric (GE Energy)
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Product Type: Media Access / High-Speed Communications Board
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System Compatibility: Speedtronic Mark IV (6BA06 slot)
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Function: Media-access control, line driving, surge isolation
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Data Rate: Up to 100 MB/s (differential pairs)
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Interfaces: Dual 34-pin ribbon (VME back-plane), RS-485 / Ethernet PHY
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Isolation: 1500 V AC board-to-ground, 500 V channel-to-channel
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Indicators: Green = link active, Red = collision / fault
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Power Dissipation: 40 W max @ 5 V & ±15 V rails
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Temp Range: -20 °C to +60 °C operational, -40 °C to +85 °C storage
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Certifications: CE, RoHS, IEEE 344 seismic, IP20 rated
Core Features & Customer Value
100 MB/s Differential Back-Plane Link
High-speed ribbon pairs transfer real-time speed, temperature, and protection data between CPU and remote I/O without CPU wait-states, mandatory for 5 ms control scan integrity.
High-speed ribbon pairs transfer real-time speed, temperature, and protection data between CPU and remote I/O without CPU wait-states, mandatory for 5 ms control scan integrity.
Hot-Swappable in TMR Strings
Daughterboard form allows online replacement in <5 min; remaining two media units continue data exchange, achieving >99.97 % availability on combined-cycle fleets.
Daughterboard form allows online replacement in <5 min; remaining two media units continue data exchange, achieving >99.97 % availability on combined-cycle fleets.
Field-Configurable Without Software
Jumper-selectable baud rate, protocol, and termination allow technicians to match plant DCS or remote HMI using only a tweaker and the silk-screen legend, no laptop required.
Jumper-selectable baud rate, protocol, and termination allow technicians to match plant DCS or remote HMI using only a tweaker and the silk-screen legend, no laptop required.
Surge-Hardened for Turbine Deck
TVS diodes and differential line drivers clamp >500 V spikes from lightning, VFD switching, or exciter flash-over. 1500 V isolation prevents ground-fault propagation to CPU cards, reducing unplanned replacement by >60 % compared with commercial NICs.
TVS diodes and differential line drivers clamp >500 V spikes from lightning, VFD switching, or exciter flash-over. 1500 V isolation prevents ground-fault propagation to CPU cards, reducing unplanned replacement by >60 % compared with commercial NICs.
GE DS3800HMAC1H1F
Typical Applications
Gas Turbine DCS & HMI Interface
Primary media access for Frame 7/9 heavy-duty units: bridges Mark IV CPU to plant DCS, operator HMI, and remote I/O during start-up, load ramps, and emergency trips, ensuring deterministic data integrity.
Primary media access for Frame 7/9 heavy-duty units: bridges Mark IV CPU to plant DCS, operator HMI, and remote I/O during start-up, load ramps, and emergency trips, ensuring deterministic data integrity.
Steam Turbine Remote I/O Cluster
High-speed link to generator vibration monitors, steam-valve positioners, and trip solenoid I/O racks in steam turbine Mark IV retrofits. Deterministic data exchange prevents false trips during transients.
High-speed link to generator vibration monitors, steam-valve positioners, and trip solenoid I/O racks in steam turbine Mark IV retrofits. Deterministic data exchange prevents false trips during transients.
Black-Start & Island Mode Operation
Media access remains active during grid loss and battery-only operation, providing critical data highway when remote SCADA is offline .
Media access remains active during grid loss and battery-only operation, providing critical data highway when remote SCADA is offline .
