GE DS200DTBAG1AAAZ Mark V Termination Card

Description

3. Key Technical Specifications

4. Product Introduction & Supply Chain Strategy

The GE DS200DTBAG1AAAZ is a specialized digital terminal board primarily utilized in the Mark V Speedtronic gas and steam turbine control systems. It serves as the physical interface point where field wiring connects to the control cabinet, routing digital signals through ribbon cables to the core processors for real-time monitoring and execution.

As the Mark V enters its extended lifecycle phase, the availability of the DS200DTBAG1AAAZ in “New Surplus” condition is becoming increasingly rare. Procuring this board as New Surplus is a strategic move to eliminate the risks inherent in refurbished parts—such as brittle terminal screws, degraded solder joints, or corrosion that can lead to intermittent signal loss. Maintaining a 1-unit on-site buffer stock is recommended to mitigate the high Total Cost of Ownership (TCO) associated with a turbine trip caused by a faulty termination point.

5. Installation & Configuration Guide

Stage 1: Pre-Installation (Prep & Safety)

Power down the specific control core. Follow all site-specific LOTO procedures. Use an ESD wrist strap to handle the board. Label every wire connected to the existing terminal blocks; do not rely solely on color coding. Take a clear photograph of the current wiring and any installed jumpers.

Stage 2: Removal

Loosen the screw terminals and carefully extract the field wiring. Disconnect the ribbon cables by releasing the side locking tabs. Unscrew the board from the mounting standoffs. Inspect the ribbon cable headers for any signs of bent pins or heat damage.

Stage 3: Installation (Clone & Seat)

Mount the New Surplus DS200DTBAG1AAAZ onto the standoffs. Ensure all jumpers are placed in the exact positions observed on the previous board. Reattach the ribbon cables until the locking tabs click into place. Re-insert the field wiring into the screw terminals and tighten to the specified torque.

Stage 4: Power-On & Testing

Apply power and verify that the I/O status is reflected correctly on the HMI. Perform a point-to-point continuity check for any critical digital inputs (e.g., trip signals). Monitor the system for “Board Mismatch” or “I/O Fault” alarms during the initial 30 minutes of operation.

DS200DTBAG1AAAZ

6. Firmware/Software Versions & Upgrade Notes

• Revision Matching: The “AAAZ” suffix denotes a specific functional revision. While often backward compatible with earlier “G1” boards, ensure your configuration software recognizes the extended revision to avoid “Object Not Found” errors.
• Hardware Jumpers: This board uses physical jumpers to define signal routing. These must be manually configured; they cannot be set via software.
• Compatibility Warning: Mixing “New Surplus” G1AAAZ boards with heavily aged ribbon cables can cause high-resistance connections. Consider replacing the 20-pin or 50-pin ribbon cables if they show signs of stiffness or discoloration.

7. Frequently Asked Questions (FAQ)

Q: What does the “AAAZ” at the end of the model number mean?

A: This represents the version and revision level. It signifies specific engineering updates made by GE during the product’s lifespan. The AAAZ is usually the most advanced version of the G1 series and is typically a direct drop-in replacement for earlier revisions.

Q: Why is the price for this board higher than what I see on auction sites?

A: Auction sites typically sell “pulled” or “as-is” parts from decommissioned plants. Our inventory is New Surplus, meaning it has zero hours of service and has been stored in a controlled environment. The price reflects the reliability and 12-month warranty you won’t get from a used part.

Q: Can this board be used in a Mark VI system?

A: No, the DS200 series is specifically designed for Mark V and some Mark V LM architectures. Mark VI systems utilize the DS215 or IS200 series boards.

Q: Do I need to calibrate the digital I/O on this board?

A: No. Digital I/O boards are “On/Off” devices and do not require the scaling or calibration necessary for analog boards. Simply ensure your jumpers and wiring match the previous configuration.

Q: Are the terminal blocks removable?

A: Depending on the specific production run, some DS200DTBA models have fixed blocks while others are pluggable. This specific New Surplus unit features high-retention screw terminals designed for permanent, vibration-resistant installation.