GE IS200WROBH1AAA Relay Output Terminal Board

Product Description: The IS200WROBH1AAA is a GE Speedtronic Mark VI relay output termination board for turbine control systems. It provides dry contact relay outputs for alarm indication, trip logic, auxiliary equipment interlock and status signaling. This board interfaces between the main Mark VI I/O controller and field solenoids, alarm lamps and auxiliary relays, isolating control logic signals from field load circuits for gas and steam turbine protection and sequence control.

Features:

• Developed for GE Mark VI turbine control platform, compatible with simplex, duplex and TMR configurations
• Multiple form C relay dry contact outputs, isolated from the control side
• Screw terminal blocks for easy field wiring of alarm and trip circuits
• Built-in transient suppression components to absorb inductive load back EMF
• Onboard LED status indicators for relay channel activation and fault check
• Eurocard form factor, plug into Mark VI rack backplane
• Designed for power plant EMC environments with high electromagnetic interference
• AAA suffix represents this specific hardware revision variant

Applications:

• Gas turbine and steam turbine Mark VI protection & alarm interlock cabinet
• Generator trip circuit, emergency shutdown and auxiliary relay control
• Power plant boiler and turbine sequence alarm output
• Oil & gas compressor turbine control system spare replacement
• Legacy Mark VI system maintenance and retrofit projects

FAQ:

Q: What does WROB mean?
A: WROB stands for Warning Relay Output Board, used for alarm and interlock relay outputs.

Q: Can IS200WROBH1AAA work on Mark VIe racks?
A: No, it belongs to the original Mark VI series, hardware and backplane bus are not compatible with Mark VIe.

Q: Are different suffix versions interchangeable?
A: Suffix AAA is the hardware revision. Verify drawing and firmware before swapping; revisions are not guaranteed plug-and-play.

Q: Is IS200WROBH1AAA still in production?
A: Mark VI series is obsolete. Available stock is NOS surplus or fully tested refurbished boards.