GE DS200TCRAG1ACC Mark V Relay Output Board

Product Overview

The GE DS200TCRAG1ACC (DS200TCRAG1ACC) operates as a high-density Relay Output Board within the Speedtronic Mark V control system. It serves as the primary execution interface between the control logic and field-side auxiliary equipment. This board contains multiple heavy-duty relays that switch external solenoids, motor starters, and alarm indicators based on commands from the R, S, and T processors. We supply this unit as 100% Brand New and Original, ensuring the mechanical switching speed and contact integrity required for mission-critical turbine protection and sequencing.

Technical Specifications

Engineering Advantages

• Galvanic Isolation Protection: The TCRA board provides physical separation between sensitive microprocessor electronics and high-voltage field circuits. This isolation prevents electrical back-feed and protects the core control rack from surges during inductive load switching.

• Arc Suppression Technology: Integrated RC snubbers and metal oxide varistors (MOVs) protect the relay contacts. These components suppress the arcing generated when switching inductive loads like fuel skid solenoids, significantly extending the board's operational lifespan.

• Deterministic Response Timing: Optimized coil drive circuitry ensures consistent relay pick-up and drop-out times. This precision is vital for synchronized sequences, such as turbine startup and emergency fuel shut-off.

• Diagnostic Feedback Loops: The hardware includes contact-state monitoring. The system continuously verifies that the relay has physically moved to the commanded position, providing real-time fault detection for the control processors.

FAQs

• Can the DS200TCRAG1ACC replace older G1AAA or G1ABA revisions?

  Yes. The "ACC" revision is the most advanced iteration of this board. It remains fully backward compatible with all previous G1 series TCRA boards while offering improved component heat resistance and superior arc suppression.

• What is the most critical check during installation?

  Technicians must verify the "W" jumpers on the board to ensure they match the configuration of the old unit. These jumpers define the routing of the 125 VDC power and the voting logic for the relay coils. Incorrect jumper settings can prevent the turbine from tripping or starting.

• Does this board support Triple Modular Redundant (TMR) voting?

  Absolutely. The TCRA board incorporates a voting circuit that requires agreement from the R, S, and T control processors to energize critical relays, ensuring that no single processor failure can cause an accidental trip or a failure to trip.

• How do I verify the relays are functioning?

  The board features a row of status LEDs located near the output connectors. Each LED corresponds to a specific relay; a lit LED indicates the relay coil is energized, allowing for rapid visual troubleshooting during loop checks.