IS200TVBAH2A - TVBA Vibration Terminal Board | GE Mark VIe | B7B

IS200TVBAH2A is a General Electric TVBA Vibration Terminal Board for GE SPEEDTRONIC™ Mark VIe control systems. The TVBA function supports vibration monitoring input operation in turbine control and balance-of-plant applications that use the Mark VIe Terminal Board and I/O Hardware. It should be matched to the installed catalog number, hardware form, and cabinet configuration before it is used as a replacement.

GE documentation identifies TVBA as a signal interface board for the Mark VIe PVIB I/O pack, providing a direct vibration interface to Eddy-current (position and velocity), seismic, Velomitor, and accelerometer sensors, as well as a dynamic pressure interface to charge amplifiers. This revision, TVBAH2A, is documented as compatible with the PVIBH1A and PVIBH1B I/O packs and includes buffered output circuits with DIN and BNC connectors; it is not IEC 61508 safety-certified and allows mixing of I/O pack revisions. The terminal board accepts 14 sensor inputs on two 24-point terminal blocks and requires the WNPS negative power supply daughterboard to generate the -28 V dc needed for sensor power.

This component is typically considered when troubleshooting Mark VIe hardware, replacing a failed module, evaluating repair options, or maintaining spare inventory for turbine control systems. Before installation, verify the catalog number, hardware revision, and associated terminal board or I/O pack configuration against site documentation and OEM requirements. The OEM reference for this listing is GEH-6721 Vol I; GEH-6721 Vol II.

Control system parts are provided by GTC Control Solutions, Inc., a wholly owned subsidiary of B7B. Parts are offered in unused, repaired, or remanufactured condition, subject to availability. Each repaired or remanufactured component undergoes comprehensive functional testing in energized panels to guarantee reliability and performance. We provide detailed test reports and warranties with every repair, giving you confidence in the quality and longevity of your replacement parts.