GE DS200RTBAG2AFB is a core Relay Terminal Board (RTBA) for the GE Speedtronic Mark V gas/steam turbine control system.Designed for industrial drive, excitation, and protection control applications, it serves as critical interface hardware connecting the system control logic with external actuators and sensors.
The board integrates 10 on-board relays (K20–K29), driven via LAN I/O terminals or remote control to provide signal isolation, power amplification, and logic switching.It is widely compatible with various GE drive and excitation systems, featuring high reliability, easy maintenance, and flexible configuration to meet the demanding control requirements of power, petrochemical, metallurgical and other harsh industrial environments.
Core Technical Parameters
1. Relay Configuration
- Total Relays: 10 units (K20–K29)
- Type 1 (DPDT, Double-Pole Double-Throw): 7 units (K20–K26)
- 2 Form C contacts per relay
- Contact current rating: 10A per contact
- Coil voltage: 110VDC
- Type 2 (4PDT, Four-Pole Double-Throw): 3 units (K27–K29)
- 4 Form C contacts per relay
- Contact current rating: 1A per contact
- Coil voltage: 110VDC
- Protection: All relay contacts equipped with 130VAC Metal Oxide Varistors (MOV) for overvoltage and surge protection
2. Electrical Parameters
- Operating Voltage: I/O supports 24VDC, 125VDC; relay coil 110VDC
- Maximum Output Current: 10A (DPDT) / 1A (4PDT) per contact
- Onboard total output power: 360W
- Protection Rating: IP20
- Connection: Spring clamp / screw terminals for industrial field wiring
3. Physical & Environmental Parameters
- Dimensions: 31.8cm × 14.5cm × 7.9cm (12.5 × 5.7 × 3.1 inches)
- Weight: Approx. 0.75kg (1.7 lbs)
- Operating Temperature: -40℃ ~ +85℃
- Storage Temperature: -40℃ ~ +85℃
- Mounting: DIN-rail mounting, suitable for integration in drive cabinets
4. Functional Features
- Control Mode: Supports local LAN I/O drive and remote control, compatible with Mark V system distributed architecture
- Easy Maintenance: Relays are independently removable and replaceable to reduce on-site repair costs
- Status Indication: Onboard channel status LEDs for quick fault location
- Compatibility: Seamlessly compatible with other Mark V series modules, supports system redundant configuration
The recommended models for the GE Mark V DS200 series are as follows:
- DS200RTBAG2AHC: Basic relay terminal board, suitable for the standard Mark V control system.It features similar contact configuration to DS200RTBAG2AFB, with optimized compatibility for industrial wiring.
- DS200RTBAG3AHC: Enhanced relay terminal board with integrated additional protection circuits.Designed for high-load excitation control applications and compatible with the EX2000 generator control system.
- DS200RTBAG3ABB: Compact relay module with simplified terminal layout.Ideal for installation in space‑constrained drive cabinets, with the same contact current rating as DS200RTBAG2AFB.
- DS200RTBAG5A: High‑performance relay terminal board optimized for steam turbine governing systems.Supports redundant control logic and provides stronger anti‑interference capability.
- DS200TCRAG1AAA: Relay output board compatible with the Mark V Q11/Q51 core architecture.Specialized for system protection logic and control signal routing.
- DS200TCRAG2A: High‑capacity relay output board equipped with 30 onboard relays.Designed to meet multi‑channel synchronous control requirements.
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