GE DS200RTBAG3AEB Relay Terminal Board – Mark V Series Turbine Control System
1. Primary Function
The DS200RTBAG3AEB is a Relay Terminal Board designed for GE’s Speedtronic™ Mark V turbine control system. It serves as a critical interface between the turbine’s digital control modules and external field devices (sensors, actuators, alarms, and shutdown circuits).
2. Key Roles & Features
A. Signal Conditioning & Relay Control
Isolates and routes discrete I/O signals (digital on/off commands) between the Mark V controller and field equipment.
Provides electromechanical relay switching for high-reliability control of:
Turbine protection circuits (e.g., emergency shutdowns, overspeed trips).
Auxiliary systems (lube oil pumps, cooling fans, valve actuators).
B. Electrical Isolation & Noise Immunity
Galvanic isolation between low-voltage logic (e.g., 24V/48V DC) and high-power field devices (120V AC/DC or higher).
Protects sensitive Mark V electronics from voltage spikes, EMI, and ground loops.
C. Redundancy & Fail-Safe Operation
Supports Triple Modular Redundancy (TMR) configurations in critical turbine applications.
Ensures fault-tolerant operation by enabling redundant signal paths for safety shutdowns.
D. Terminal Block Connectivity
Screw-type terminal blocks for secure, maintenance-friendly field wiring.
Clearly labeled I/O points for easy integration with Mark V schematics (GEH-6194 manual).
E. Diagnostic & Status Monitoring
LED indicators for real-time relay status (energized/de-energized).
Simplifies troubleshooting during system checks or fault conditions.
3. Industrial Durability
Ruggedized design for harsh environments (high temps, vibration, humidity).
Compact form factor for installation in Mark V control racks.
4. Typical Applications
Gas/Steam Turbine Protection: Overspeed trips, flame detection, vibration alarms.
Auxiliary System Control: Fuel valves, ignition systems, cooling pumps.
Power Plant Automation: Integration with DCS/PLC systems for synchronized operation.
5. Maintenance Notes
Requires system power-down for replacement due to direct field wiring.
Must adhere to GE Mark V wiring standards to ensure signal integrity and safety.
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