Description
DS3800DMPK1E1D: Product Overview
The DS3800DMPK1E1D is the central digital microprocessor regulator board for GE Speedtronic Mark IV gas- and steam-turbine control racks. Occupying one 6BA07 slot, it hosts the primary CPU, 14 EPROM modules, and deterministic control algorithms that govern speed PID, load control, temperature limiting, acceleration schedules, and protective tripping. The card is hardware-deterministic (no firmware download) and suitable for safety-related turbine control when triple-redundant.
Physical implementation includes a 32-bit microprocessor, 14 erasable EPROM sockets, 17 gold-pinned jumpers, dual 34-pin ribbon cables, and on-board SIL-2 safety logic. 5 ms control scan and <0.1 ms response time ensure bit-exact congruence across three CPU legs; RS-485 & Ethernet ports allow ToolboxST diagnostics without rack intrusion.
Environmental qualification meets –40 °C to +70 °C, IP20, <5 W power draw, and IEEE 344 seismic, giving >25-year service life in baseload duty.
DS3800DMPK1E1D
DS3800DMPK1E1D: Technical Specifications
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Model Number: DS3800DMPK1E1D
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Manufacturer: General Electric (GE Energy)
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Product Type: Digital Microprocessor Regulator / CPU Board
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System Compatibility: Speedtronic Mark IV (6BA07 slot)
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CPU: 32-bit, deterministic, parity-checked buses
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Memory: 14 EPROM modules (reprogrammable), 64 kB effective
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Scan Rate: 5 ms (deterministic, jitter <0.1 ms)
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I/O Capacity: 4096 DI/DO, 1024 AI/AO (voted), 16-bit resolution
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Interfaces: RS-485, Ethernet (ToolboxST), dual 34-pin ribbon
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Isolation: 1500 V AC board-to-ground, 500 V channel-to-channel
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Jumpers: 17 (address, scan rate, I/O maps)
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Indicators: Green = run, Red = fault / watchdog
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Temp Range: -40 °C to +70 °C operational, -55 °C to +125 °C storage
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Power: <5 W @ 5 V & ±15 V rails
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Certifications: SIL-2 (IEC 61508), API 670, IEEE 344 seismic, CE
Core Features & Customer Value
Deterministic 5 ms Scan for Grid-Code Compliance
32-bit CPU and hardware-based scan timer ensure bit-exact congruence across three CPU legs; voter disagreement is <0.1 ms, mandatory for SIL2 TMR certification and NERC frequency-response requirements.
32-bit CPU and hardware-based scan timer ensure bit-exact congruence across three CPU legs; voter disagreement is <0.1 ms, mandatory for SIL2 TMR certification and NERC frequency-response requirements.
Hot-Swap Redundancy Without Outage
Plug-and-play replacement in TMR racks; remaining two CPUs carry load while faulted board is swapped in <5 min, achieving >99.97 % start reliability on combined-cycle fleets.
Plug-and-play replacement in TMR racks; remaining two CPUs carry load while faulted board is swapped in <5 min, achieving >99.97 % start reliability on combined-cycle fleets.
Field-Configurable Without Software
17 jumpers select scan rate, I/O maps, and gain/offset—technician can tune for different turbine inertia or generator rating using only a tweaker and the silk-screen legend, no laptop required.
17 jumpers select scan rate, I/O maps, and gain/offset—technician can tune for different turbine inertia or generator rating using only a tweaker and the silk-screen legend, no laptop required.
Seismic & Harsh-Site Qualified
-40 °C to +70 °C, IP20, and <5 W low-power design allow mounting on turbine deck with no HVAC; conformal coat and gold-edge connectors resist salt-fog, SO₂, and coal-dust, delivering >25-year life.
-40 °C to +70 °C, IP20, and <5 W low-power design allow mounting on turbine deck with no HVAC; conformal coat and gold-edge connectors resist salt-fog, SO₂, and coal-dust, delivering >25-year life.
DS3800DMPK1E1D
Typical Applications
Gas Turbine Speed & Load Control
Primary CPU for Frame 7/9 heavy-duty units: executes speed PID, acceleration schedule, fuel staging, and grid synchronizing. Triple redundancy ensures 99.97 % start reliability and <0.25 % forced-outage rate on combined-cycle fleets.
Primary CPU for Frame 7/9 heavy-duty units: executes speed PID, acceleration schedule, fuel staging, and grid synchronizing. Triple redundancy ensures 99.97 % start reliability and <0.25 % forced-outage rate on combined-cycle fleets.
Steam Turbine Governor & Protection
Speed/current loops drive Moog servo valves on governor and over-speed protection valves. Deterministic response prevents valve dither and mechanical wear, extending servo life to >100 k hours.
Speed/current loops drive Moog servo valves on governor and over-speed protection valves. Deterministic response prevents valve dither and mechanical wear, extending servo life to >100 k hours.
Black-Start & Island Mode Operation
Master timing reference for excitation, synchronizing, and load-sharing when grid is lost. Deterministic voter guarantees phase-angle matching <0.5°, mandatory for NERC PRC-024-2 ride-through.
Master timing reference for excitation, synchronizing, and load-sharing when grid is lost. Deterministic voter guarantees phase-angle matching <0.5°, mandatory for NERC PRC-024-2 ride-through.
