Description
The GE MRP768176 IS200TDBTH6ABC is a high-reliability Discrete Input/Output Terminal Board manufactured for the Speedtronic Mark VI and Mark VIe turbine control platforms. Utilizing the functional acronym TDBT, this heavy-duty printed circuit board is specifically designed to support Triple Modular Redundancy (TMR) applications, allowing seamless interface connection between three independent I/O processors (R, S, and T channels) and external field machinery.
- Manufacturer: GE Industrial Systems / General Electric
- Product Line: Speedtronic Mark VI / Mark VIe
- Model Number: GE IS200TDBTH6ABC
- Manufacturing Identification: MRP768176
- Functional Acronym: TDBT (Discrete Terminal Board TMR)
- Redundancy Support: Triple Modular Redundancy (TMR) layout configuration
- Contact Inputs: 24 group-isolated discrete contact inputs
- Wetting Voltage Options: Nominal 24 VDC, 48 VDC, or 125 VDC floating input range (100-145 VDC)
- Relay Outputs: 12 integrated Form-C mechanical relay channels
- Noise Suppression: Integrated high-frequency surge and noise suppression filters per input line
- Coating Style: Industrial-grade conformal coating for advanced environmental resistance
- Front Faceplate Interface: 2 external cable connectors and 3 diagnostic LED status indicators
- Dimensions: 6.30 x 6.30 x 4.72 inches (16.0 x 16.0 x 12.0 cm)
- Weight: 1.76 lbs (0.80 kg)
- Country of Origin: United States (USA)
GE MRP768176 IS200TDBTH6ABC
GE MRP768176 IS200TDBTH6ABC
Target Applications
This high-level TMR discrete interface is vital for industrial machinery that operates under strict zero-downtime safety parameters. Primary deployment fields include:
- Main steam, gas, and hydro turbine trip block coordination
- Critical emergency shutdown (ESD) networks and interlock lines
- Utility-scale thermal power plant distributed control configurations
- Process system monitoring loops inside heavy chemical refineries
- Large-scale extraction and compressor stations across oil and gas pipelines
Operating Instructions and Safety Guidelines
- Always wear an adjusted Electrostatic Discharge (ESD) grounding wrist strap before interacting with the board surfaces to avoid microscopic static discharge to integrated circuits.
- Ensure all backplane power buses and external field wetting voltage circuits are fully turned off prior to installing the module onto flat surfaces or DIN-rail assemblies.
- Connect three matching PDIO I/O packs to the dedicated D-type faceplate connectors to ensure correct TMR network communication over local Ethernet controllers.
- Verify that your field load parameters match the floating 125V or 24/48V voltage ratings before powering up to prevent contact welding on the 12 Form-C relays.
Frequently Asked Questions
- Q: Can the IS200TDBTH6ABC module function correctly with only one connected I/O pack? A: No, this TDBT variant is purposefully configured for TMR safety logic. It requires connection points JR1, JS1, and JT1 to line up with the corresponding R, S, and T controllers to function as intended.
- Q: What is the benefit of the conformal coating layer on this model? A: The high-grade conformal coating seals the components from airborne contaminants, moisture, and corrosive gas elements found near high-temperature turbine environments.
- Q: How does the system filter out inductive spikes from the field contacts? A: Every discrete channel on the TDBT board features built-in noise suppression circuitry to absorb high-frequency feedback and surge spikes from external field sensors.
Recommended Hot Stock Inventory Items
- Bently Nevada 3500/42M Proximitor Seismic Monitor Card
- Allen-Bradley 1756-L83E ControlLogix Processor
- Triconex 3721 Analog Input Module
- ABB DI810 Digital Input Module
- Westinghouse Ovation 1C31116G01 Controller Card
- Honeywell CC-PAIH01 Analog Input Module
- Siemens 6ES7417-4XT05-0AB0 High Performance CPU
- Schneider Electric Modicon TSXPSY5520M Power Unit
- Foxboro FBM201 8-Channel Analog Input Card
- Woodward 9907-167 505 Digital Governor Controller
