Description
DS200DSFBG2A Product Overview
The DS200DSFBG2A is a driver/shunt feedback board used inside GE Mark V Speedtronic and EX2000 medium-voltage DC-drive cubicles. It occupies a single VME slot and serves as the analog feedback interface between the power bridge (IGBT or SCR stack) and the triple-redundant control processor.
The DS200DSFBG2A is a driver/shunt feedback board used inside GE Mark V Speedtronic and EX2000 medium-voltage DC-drive cubicles. It occupies a single VME slot and serves as the analog feedback interface between the power bridge (IGBT or SCR stack) and the triple-redundant control processor.
In the drive hierarchy the card sits at the “power-feedback” layer:
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It conditions shunt-feedback signals (armature current, DC-bus voltage) from precision resistors or Hall sensors,
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limits voltage spikes via on-board snubber networks, and
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returns scaled ±10 V / 4-20 mA signals to the CPU for closed-loop current and speed control.
Because the board is passive (no microprocessor) and carries conformal coating, it qualifies as a “simple device” for safety-related turbine-compressor drives, avoiding additional software V&V.
Technical Specifications
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Model Number: DS200DSFBG2A
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Manufacturer: General Electric
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Product Type: Driver/Shunt Feedback Board (DSFB)
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Functional Family: Group 2 Mark V Speedtronic assembly
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Logic Supply: 24 VDC (derived from Mark V backplane)
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Operating Temperature: -20 … +60 °C
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Weight: ≈ 1.25 kg (2.8 lb)
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Coating: Standard GE Mark V conformal coating
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Isolation: 1500 V basic between field and logic
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Connectors: Front-panel keyed headers for shunt inputs and feedback outputs
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Certifications: CE, UL, RoHS, Zone-2 ready
DS200DSFBG2A
Core Features & Customer Value
Shunt-feedback conditioning – Eliminates external signal conditioners by scaling armature current and DC-bus voltage to ±10 V / 4-20 mA levels the CPU can digitise directly
Shunt-feedback conditioning – Eliminates external signal conditioners by scaling armature current and DC-bus voltage to ±10 V / 4-20 mA levels the CPU can digitise directly
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On-board voltage limiting – TVS and RC snubber networks clamp dv/dt spikes, extending IGBT/SCR life and keeping EMI within IEEE 519 limits
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Group 2 Mark V assembly – Shares the same DS200 form factor and coating as other Mark V boards, allowing drop-in replacement without mounting or parameter changes
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Side-mount status – Although passive, the board’s location and Group 2 coding give instant visual confirmation of correct slot placement during maintenance
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Zone-2 / marine certified – Conformal-coated PCB survives salt, humidity, and vibration common in off-shore compressor drives without additional enclosure pressurisation
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Typical Applications
In combined-cycle power plants the DS200DSFBG2A is installed in Mark V drive cubicles that feed the gas-turbine compressor motor. It scales armature-current shunt signals and reports DC-bus voltage to the CPU for closed-loop speed control while clamping turn-off spikes
In combined-cycle power plants the DS200DSFBG2A is installed in Mark V drive cubicles that feed the gas-turbine compressor motor. It scales armature-current shunt signals and reports DC-bus voltage to the CPU for closed-loop speed control while clamping turn-off spikes
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In pipeline booster stations the same card is used in 4.16 kV DC drives that drive centrifugal compressors; the shunt-feedback conditioning keeps current-loop response below 50 µs even under regenerative braking .
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 feedback interface is mandatory
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