Description
DS200SDCIG1A Product Overview
The DS200SDCIG1A is a dual-slot VME personality board used inside GE EX2000 and Mark V Speedtronic DC-drive cubicles. It occupies the SDCI (Supply, Drive, Control, Instrumentation) slot and performs three concurrent tasks:
The DS200SDCIG1A is a dual-slot VME personality board used inside GE EX2000 and Mark V Speedtronic DC-drive cubicles. It occupies the SDCI (Supply, Drive, Control, Instrumentation) slot and performs three concurrent tasks:
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Power-supply generation – produces all low-voltage rails required by the control backplane:
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+5 VDC @ 4 A (logic)
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±15 VDC @ 0.4 A (analog front-end)
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±24 VDC @ 0.4 A (relay / contactor coils)
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115 VAC @ 0.4 A (field flashing)
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SCR gating & field control – generates and amplifies gate pulses for the armature and field SCR bridges, includes circuits for a ≤10 A internal field exciter (G1 version) so DC-motor field current can be supplied without an external supply.
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Instrumentation & feedback – conditions and scales critical drive signals:
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armature current & voltage
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field current & voltage
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AC line currents, voltage magnitude, and phase sequence
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fuse-status LED indicators (one LED per fuse) for instant fault location.
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All medium-voltage feedback is routed through front-panel keyed headers; the board is conformal-coated and carries 1500 V basic insulation between field and logic, allowing 480 VAC line and 24 VDC control to coexist safely.
Because the card is passive (no microprocessor) and stores no parameters, it qualifies as a “simple device” for safety-related turbine-compressor drives, avoiding additional software V&V.
GE DS200SDCIG1A
Technical Specifications
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Model Number: DS200SDCIG1A
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Manufacturer: General Electric
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Product Type: DC Power Supply & Instrumentation Board (SDCI)
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Power Outputs:
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+5 VDC @ 4 A (logic)
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±15 VDC @ 0.4 A (analog)
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±24 VDC @ 0.4 A (relays)
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115 VAC @ 0.4 A (field flash)
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≤10 A internal field exciter (G1 version)
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Instrumentation Inputs: Armature current/voltage, field current/voltage, AC line current/voltage, phase sequence
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Isolation: 1500 V basic between field and logic
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Connectors: Front-panel keyed headers for power, SCR gating, and feedback
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Jumpers: Berg-type (JPxx) for customer options & manufacturing test
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Fuse Indication: One LED per fuse for immediate blown-fuse identification
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Operating Temperature: 0–60 °C (drive ambient); –40 … +85 °C storage
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Weight: ≈ 1.56 kg (3.4 lb)
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Certifications: CE, UL, RoHS, Zone-2 ready
Core Features & Customer Value
All-in-one power & gating – Replaces separate power supplies, SCR firing cards, and instrumentation modules, freeing Mark V slots and reducing spare-part count
All-in-one power & gating – Replaces separate power supplies, SCR firing cards, and instrumentation modules, freeing Mark V slots and reducing spare-part count
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≤10 A internal field exciter – G1 version can source up to 10 A for DC-motor field windings, eliminating an external field supply and its associated wiring
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Fuse-status LEDs – One LED per fuse gives instant visual fault location, shortening mean-time-to-repair during night-shift call-outs
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Berg jumpers for site options – JP jumpers allow on-site scaling or test-mode selection without software tools, keeping commissioning time low
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Zone-2 / marine certified – Conformal-coated PCB survives salt, humidity, and conductive dust common in off-shore compressor drives without additional enclosure pressurisation
GE DS200SDCIG1A
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Typical Applications
In combined-cycle power plants the DS200SDCIG1A is installed in EX2000 drive cubicles that feed the gas-turbine compressor motor. It generates all logic rails, fires the armature SCRs, and reports armature current to the CPU for closed-loop speed control .
In combined-cycle power plants the DS200SDCIG1A is installed in EX2000 drive cubicles that feed the gas-turbine compressor motor. It generates all logic rails, fires the armature SCRs, and reports armature current to the CPU for closed-loop speed control .
In pipeline booster stations the same card is used in 4.16 kV DC drives that drive centrifugal compressors; the internal field exciter supplies the motor field while the instrumentation circuits monitor DC-bus voltage and current for anti-surge logic
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Because the board is certified for marine environments, it is also used on off-shore platforms for engine-driven generators where a fan-less, Zone-2, simple-device power/interface card is mandatory
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