Description

IS200TDBTH6A Discrete Bridge Terminal Board

Technical Specifications

• Product Model: IS200TDBTH6A
• Brand: GE Vernova
• Warranty: One Year
• Input Voltage: 24‑125 VDC field discrete‑circuit supply
• Operating Temperature: ‑40 °C ~ +70 °C
• Storage Temperature: ‑40 °C ~ +85 °C
• Response Time: Passive signal termination, no signal conversion delay
• Protection Class: IP20 rack‑mount terminal‑board assembly
• Accuracy Class: Passive discrete‑signal routing hardware
• Output Frequency: Not applicable
• Rated Current: Per‑channel limited by external fuse protection
• Function: TDBT discrete bridge terminal board for Mark VIe PDIO discrete‑I/O subsystem; field‑wiring interface for discrete inputs and relay output channels
• System Compatibility: GE Mark VIe turbine‑control system, mates with IS200WROBH1A processor board
• Termination: Screw‑type field‑wiring terminals; multi‑pin backplane inter‑board connectors
• Diagnostics: Supports external circuit‑fault monitoring for discrete loops
• Humidity: 5‑95 % RH, non‑condensing
• Weight: 0.90 kg
• Dimensions: Standard Mark VIe terminal‑board footprint
• 

Product Overview

IS200TDBTH6A is a high‑density discrete bridge terminal board for GE Mark VIe PDIO discrete‑I/O racks. It provides physical screw‑terminal connections for field‑wired limit switches, contact feedback contacts, solenoid valve drive circuits and turbine interlock discrete signals. It routes field discrete signals between field devices and IS200WROBH1A relay‑sensing processor boards. Built‑in transient‑suppression components improve signal integrity against plant‑side electrical surges and noise. Widely used for gas‑turbine and steam‑turbine auxiliary‑equipment status acquisition and trip‑interlock logic signal routing. Obsolete turbine‑control spare hardware available as refurbished and surplus tested assemblies for legacy power‑plant cabinet maintenance projects.

Application Notes

‑ De‑energise all field discrete‑circuit power before modifying field‑wiring on terminal blocks. ‑ Strict ESD anti‑static handling required during board replacement. ‑ Verify backplane inter‑board connector full seating after installation. ‑ Perform discrete‑loop continuity test after board swap‑out. ‑ Typical deployment: power‑plant Mark VIe discrete‑I/O terminal‑board spare‑part stocking.