Description
DS3800HXPD1C1E: Product Overview
The DS3800HXPD1C1E is a daughterboard-grade CPU expander that plugs onto a motherboard carrier inside the GE Speedtronic Mark IV rack. It expands the on-board CPU memory and provides high-speed data acquisition, multi-channel isolated I/O, and real-time control loops for turbine speed, temperature, and protection algorithms. Because it is hardware-deterministic (no firmware download), the card delivers bit-exact timing across all three legs of a TMR string, making it suitable for SIL-2 / API 670 CPU expansion loops.
The board belongs to the DS3800 daughterboard architecture, allowing hot-swap replacement without rewiring the turbine deck. Gold-plated edge fingers, conformal coat, and –40 °C to +70 °C rating ensure 25-year service life in coal-dust, salt-fog, or high-vibration environments.
DS3800HXPD1C1E
DS3800HXPD1C1E: Technical Specifications
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Model Number: DS3800HXPD1C1E
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Manufacturer: General Electric (GE)
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Product Type: CPU Expander / High-Performance Microprocessor Board
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System Compatibility: Speedtronic Mark IV (6BA06 slot)
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Input Supply Voltage: 24 V DC ±10 %
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I/O Channels: Multi-channel high-speed isolated inputs (jumper-selectable)
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Data Acquisition: High-speed ADC/DAC with 12-bit resolution
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Memory: Expanded EPROM + RAM pool for firmware segments
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Isolation: 1500 V AC board-to-ground, 500 V channel-to-channel
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Connectors: 40-pin modular (field side) + VME edge fingers (back-plane side)
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Dimensions: 8.25 cm × 4.15 cm × 1.6 cm (approx.)
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Weight: Approx. 0.67 lbs (0.3 kg)
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Operating Temperature: -40 °C to +70 °C; Storage: -55 °C to +85 °C
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Certifications: CE, UL, TUV, IEEE 344 seismic qualified
Core Features & Customer Value
Hardware-Deterministic Timing
Because the card contains no flashable firmware, every data acquisition channel responds with bit-exact timing across all three legs of a TMR string. This eliminates scan-to-scan jitter that could introduce voter disagreement, giving you SIL-2 / API 670 confidence for CPU expansion and high-speed data acquisition loops.
Because the card contains no flashable firmware, every data acquisition channel responds with bit-exact timing across all three legs of a TMR string. This eliminates scan-to-scan jitter that could introduce voter disagreement, giving you SIL-2 / API 670 confidence for CPU expansion and high-speed data acquisition loops.
Hot-Swap Ready
Daughterboard form allows you to extract and insert the card while the turbine remains on-line (provided the carrier is in a TMR string). Mean-time-to-repair is <5 minutes, so you avoid forced outages and start-up delays.
Daughterboard form allows you to extract and insert the card while the turbine remains on-line (provided the carrier is in a TMR string). Mean-time-to-repair is <5 minutes, so you avoid forced outages and start-up delays.
Field-Calibratable Without Software
On-board trim pots and jumper-selectable I/O ranges allow you to match ±10 V pickups or 4–20 mA loops on the turbine deck using only a screwdriver and a DMM. This eliminates the need for a laptop or OEM service call when you swap sensors, change cable runs, or reload firmware segments.
On-board trim pots and jumper-selectable I/O ranges allow you to match ±10 V pickups or 4–20 mA loops on the turbine deck using only a screwdriver and a DMM. This eliminates the need for a laptop or OEM service call when you swap sensors, change cable runs, or reload firmware segments.
Surge-Hardened for Harsh Sites
TVS diodes on every input clamp >500 V spikes from lightning, VFD switching, or exciter flash-over. The 1500 V galvanic isolation barrier prevents ground-fault currents from propagating into the low-voltage CPU domain, extending card life beyond 25 years in coal-dust, salt-fog, or high-vibration environments.
TVS diodes on every input clamp >500 V spikes from lightning, VFD switching, or exciter flash-over. The 1500 V galvanic isolation barrier prevents ground-fault currents from propagating into the low-voltage CPU domain, extending card life beyond 25 years in coal-dust, salt-fog, or high-vibration environments.
DS3800HXPD1C1E
Typical Applications
Gas Turbine CPU Memory & I/O Expansion
In large combined-cycle plants, DS3800HXPD1C1E is widely used to expand on-board CPU memory for additional start-up curves while simultaneously acquiring high-speed data from bearing-metal RTDs and combustion-can pressure transmitters. The 40-pin modular connector and expanded memory pool provide real-time visibility into speed, temperature, and protection loops during Frame 7/9 start-ups.
In large combined-cycle plants, DS3800HXPD1C1E is widely used to expand on-board CPU memory for additional start-up curves while simultaneously acquiring high-speed data from bearing-metal RTDs and combustion-can pressure transmitters. The 40-pin modular connector and expanded memory pool provide real-time visibility into speed, temperature, and protection loops during Frame 7/9 start-ups.
Steam Turbine High-Speed Data Acquisition
The card’s multi-channel isolated inputs and 12-bit ADC make it the preferred interface for steam-valve position LVDTs and exhaust-pressure transmitters. During load ramps, the deterministic 100 kHz update rate prevents valve dither, extending servo life beyond 100 000 cycles while maintaining ±0.1 % pressure control accuracy.
The card’s multi-channel isolated inputs and 12-bit ADC make it the preferred interface for steam-valve position LVDTs and exhaust-pressure transmitters. During load ramps, the deterministic 100 kHz update rate prevents valve dither, extending servo life beyond 100 000 cycles while maintaining ±0.1 % pressure control accuracy.
Island-Mode & Black-Start Sites
On offshore platforms or remote peaking plants, the –40 °C to +70 °C rating and conformal coat allow the card to run without HVAC. Battery-backed operation is supported because the card draws <1 W and continues to deliver accurate readings when external transmitters are powered from station DC.
On offshore platforms or remote peaking plants, the –40 °C to +70 °C rating and conformal coat allow the card to run without HVAC. Battery-backed operation is supported because the card draws <1 W and continues to deliver accurate readings when external transmitters are powered from station DC.
