Description

IS200WROBH1A Relay Output & Power‑Sensing Board

Technical Specifications

• Product Model: IS200WROBH1A
• Brand: GE Vernova
• Warranty: One Year
• Input Voltage: System 125 VDC relay‑drive supply
• Operating Temperature: ‑40 °C ~ +70 °C
• Storage Temperature: ‑40 °C ~ +85 °C
• Response Time: Relay‑contact status sensing <1 ms
• Protection Class: IP20 euro‑card plug‑in PCB board
• Accuracy Class: Relay‑status power‑sensing grade
• Output Frequency: Not applicable
• Rated Current: 3.15 A on‑board fuse rating
• Function: WROB relay‑output power‑sensing board for PDIO discrete‑I/O subsystem; monitors relay drive‑circuit health, works with TDBT / TDBS terminal boards
• Redundancy Support: Simplex, duplex and TMR triple‑modular‑redundant configurations
• System Compatibility: GE Mark VIe discrete‑I/O rack subsystem
• Diagnostics: On‑board circuit‑fault detection for relay‑drive paths
• Humidity: 5‑95 % RH, non‑condensing
• Weight: 0.65 kg
• Dimensions: 178 × 127 mm standard euro‑card footprint
• 

Product Overview

IS200WROBH1A is a plug‑in relay‑output power‑sensing circuit board for GE Mark VIe discrete‑I/O subsystem, providing drive‑circuit health monitoring for turbine‑control relay‑output interlock and trip‑logic functions. It pairs with TDBS / TDBTH series terminal boards to implement TRLY relay‑output channels in simplex or TMR fault‑tolerant architecture. On‑board fuse provides circuit‑protection for relay‑drive loops. It detects abnormal current draw and reports drive‑path faults to the Mark VIe controller. Discrete‑I/O spare PCB assembly available as refurbished and surplus tested hardware for legacy turbine‑control cabinet maintenance.

Application Notes

‑ Power‑off rack before board replacement; observe strict ESD handling rules. ‑ Confirm fuse rating matches original factory specification. ‑ Verify TMR‑mode jumper settings when deploying in triple‑redundant racks. ‑ Typical deployment: power‑plant Mark VIe relay‑output sensing‑board spare‑part stocking.