GE DS200TCQCG1BGF Overflow/Power Feedback Board

Description

In the thunderous exhaust paths of Frame 7FA gas turbines pushing 200 MW for urban grids, where combustion overflow risks diluting cooling air and spiking NOx beyond permits, controllers must tally flame detector votes across dual cans to purge safely before relight. High-voltage M-frame generators in combined cycles demand overflow boards that debounce contact chatter from position switches on IGVs, preventing nuisance trips during 50% load ramps. Peaking plants cycling daily face thermal fatigue on transition pieces, relying on precise overflow logic to signal dilution dumps without false positives from EMI bursts. The GE DS200TCQCG1BGF meets these combustion safeguards in industrial automation as a power feedback and overflow protection board for Mark V Speedtronic systems, acquiring relay states and analog feedbacks to enforce permissive sequences. Used in industrial automation for turbine flame monitoring and purge control, it interfaces RST processors in <R/S/T> cores, applicable in control systems from F-class to industrial frames​

Steam-injected turbines in cogeneration setups deploy the GE DS200TCQCG1BGF for water injection interlocks, cross-checking flow switches against flame eyes to block starts on low pressure. Oil-fired boilers use it to sequence FD fan proofs before spark, dodging explosion hazards in ductwork. Aerospace ground test cells lean on its voted inputs for afterburner cans, correlating UV/IR signals to fuel schedules. In these volatile zones, the board handles 24 VDC discrete inputs with 1 ms response, feeding TMR-voted outputs to fuel stops. Operators specify it for Mark V upgrades, retaining legacy wiring while adding HMI diagnostics for trend review.

District heating plants benefit from the GE DS200TCQCG1BGF‘s overflow tallies on duct burners, optimizing turndown without lean blowoff. Pipeline compressor stations apply it to anti-surge vents, validating position proofs amid 100 barg pressures. By embedding deterministic purge in industrial automation, it complies with NFPA 85, stretching intervals from daily to condition-based while sharpening startup success to 99.5%.

Product Introduction & Positioning

The GE DS200TCQCG1BGF is a specialized overflow and power feedback board in GE’s Mark V turbine controls, bridging RST processors (R/S/T cores) with field relays for flame detection, purge proofs, and generator sync feedbacks. Equipped with 24 isolated digital inputs and 8 analog channels (4-20 mA, 12-bit), it mounts in VME racks, streaming data via backplane bus to execute permissive ladders per GEH-6073. In TMR setups, the GE DS200TCQCG1BGF votes 2oo3 on criticals like cross-flame, outputting to trip amplifiers with <10 ms latency.

Positioned for F/M-class heavies, the GE DS200TCQCG1BGF integrates with TCQA/TCQB overspeed boards, supporting HART overlays for smart detectors. Engineers appreciate its configurable debounce filters (1-255 ms) tuning to probe types, plus test points for loop calibration sans disassembly. In Mark V architecture, it feeds <P> protection independently, isolating faults to prevent common-mode trips.

For integrators, the GE DS200TCQCG1BGF scales to Mark VIe via drop-in adapters, embedding diagnostics for predictive flame eye swaps. Jumper-selectable gains match legacy TCQC, positioning it as the reliability anchor for fleets chasing 8000 EOH runs.

Key Technical Features & Functional Benefits

Operators lean on the GE DS200TCQCG1BGF‘s galvanic isolation—1500 Vrms per channel shields logic from 125 VDC arcs on starter relays, with wet/dry jumpering for sink/source flexibility. 24-bit timestamping logs events to 1 ms, enabling sequence-of-events replays for RCA on hung purges. Analog scalers handle ±10 V generator fields, filtering ripple to 0.1% for precise V/Hz protections.

Single-slot VME footprint draws 5W from +5V, passive-cooled for compartment temps to 65°C. Phoenix contacts secure 20 AWG, with LED banks mirroring inputs for at-a-glance proofs. Debounce logic rejects 60 Hz bounce, ensuring clean votes amid vibrator noise.

Conformal-coated FR4 endures 95% RH and H2S, with MTBF >300K hours. Self-test routines flag open inputs or ADC drifts on boot, while bulk %I mapping frees memory. Field upgrades via flash EEPROM adapt to new sensors without respins​

Detailed Technical Specifications

Related Modules or Compatible Units

TCQA – Overspeed board receiving votes from GE DS200TCQCG1BGF for trips.
DS200TCQBG1B – Input companion expanding discretes with GE DS200TCQCG1BGF.
DS200DMCBG1A – Motion control linking generator feedbacks via GE DS200TCQCG1BGF.
DS200RTBAG1A – Relay output driven by GE DS200TCQCG1BGF proofs.
DS200TCPAG1A – Processor core hosting GE DS200TCQCG1BGF in RST.
FGI – Flame amp tying detectors to GE DS200TCQCG1BGF inputs.
DS200TCTBG1A – Terminal board for analog tie-ins with GE DS200TCQCG1BGF.

Installation Notes & Maintenance Best Practices

Rack the GE DS200TCQCG1BGF in <R> slot 4-8, verifying backplane seating via power-up LEDs—jumper JP1 for wet inputs if sourcing. Ferrule 18 AWG to TB1-3 (pos to IN+, com to IN-), torque 0.5 Nm; route shields to single ground post. Calibrate analogs with 12 mA source, zeroing offsets in Toolbox per channel. Cycle thrice post-install to log self-tests, confirming no stuck bits.

Quarterly, force 50% inputs via HMI, timing debounce—replace if >5% variance. Biannual visuals check for flux residue migration; IPA clean gold fingers. Annual %I scans export trends, flagging drifty flame eyes (>2% span). Purge enclosure post-water ingress, baking at 60°C/24h before recommit.