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GE DS200TCEAG1BRE Emergency Overspeed & Flame Detection Board

The GE DS200TCEAG1BRE, also cataloged as the DS200TCEA Emergency Overspeed & Flame Detection Board, operates as a dedicated protection hardware component for turbine overspeed and flame monitoring within the GE Mark V Speedtronic control system. It processes magnetic pickup and UV/IR detector signals through local safety logic execution and provides fail-safe trip relay outputs.

Hardware Specifications

Parameter	Specification
Model	DS200TCEAG1BRE
Brand	GE
Origin	United States
Weight	0.3 kg
Operating Temp	0 deg C to +70 deg C, 5-95% non-condensing humidity
Power Consumption	Supplied from P1 backplane, 5 VDC and 24 VDC rails
Processor	Intel 80196 16-bit microcontroller
Memory	PROM sockets for firmware and safety parameters
Inputs	Magnetic pickup sinusoidal speed signals; UV/IR flame detector pulse inputs
Outputs	Fail-safe Form C trip relays, 24 VDC, 2 A
Isolation	2500 Vrms optical isolation between field inputs and backplane
Speed Range	Configurable 100 RPM to 20,000 RPM
Accuracy	+/-0.1% of reading
Trip Channels	2 independent overspeed trip channels
Response Time	<10 ms
Diagnostics	LED indicators for run, fault, speed, and flame status; built-in self-test
Protection	On-board fuses FU1-FU3 for overcurrent protection
Redundancy	Supports TMR 2oo3 voting logic

GE Mark V Safety Logic and Protection Execution

The DS200TCEAG1BRE operates within the Mark V P1 Protective Core as an independent safety processing board. The Intel 80196 microcontroller executes local overspeed and flame detection logic without depending on the main control processor execution path.

The board accepts magnetic pickup sensor signals for shaft speed measurement and UV/IR detector pulse signals for flame monitoring. Dual overspeed channels provide separate trip processing paths with programmable thresholds and hysteresis functions.

Hardware Protection and TMR Voting Characteristics

The DS200TCEAG1BRE supports Triple Modular Redundancy (TMR) 2oo3 architecture within compatible Mark V protection configurations. The safety logic execution allows voting-based trip decisions while maintaining independent signal processing paths.

Fail-safe relay operation is implemented through de-energize-to-trip logic. Loss of board power, control voltage, or internal fault conditions can drive the relay outputs toward the turbine shutdown state.

Frequently Asked Questions (FAQ)

Q: What input signals are processed by the DS200TCEAG1BRE?
A: The board processes magnetic pickup sinusoidal signals for turbine shaft speed detection and UV/IR detector pulse signals for flame monitoring.

Q: How is trip output behavior implemented during power loss?
A: The board uses fail-safe relay logic where relay de-energization initiates the trip condition during power interruption or fault states.

Q: Does the board operate through the main Mark V controller loop?
A: No. The board executes protection logic locally through its Intel 80196 processor and maintains an independent safety execution path from the main control processors.

Field Installation Guidelines

Install the DS200TCEAG1BRE only in the designated GE Mark V P1 protective core rack position. Verify that the backplane connectors are clean and properly seated before insertion.

Route magnetic pickup and flame detector wiring separately from high-current switching cables to reduce electrical interference. Use shielded field wiring where required, with cable shields terminated according to the turbine control cabinet grounding practice.

Before commissioning, verify field input polarity, relay contact wiring, fuse conditions, and LED diagnostic indications. Confirm that trip circuits remain de-energized during simulated fault conditions and that protective logic responds according to the configured safety parameters.

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