IS200VPROH1B

About the IS200VPROH1B

The IS200VPROH1B is a PCB component from General Electric used in the MKVI Speedtronic gas/steam turbine management system. Mark VI systems are typically used in process plant or electrical generation applications, to control generator synchronization, turbine speed, and load control, and to protect from loss of load. The IS200VPROH1B is one of two versions of the Mark VI’s Emergency Turbine Protection board. This card, along with associated TPRO and TREG boards, provide the Mark VI system with both emergency stop functions and an emergency overspeed protection system; independent of the primary systems.  

Hardware Tips and Specifications

This Emergency Turbine Protection Card is compatible with two crucial terminal boards within the greater Mark VI Speedtronic drive assembly. These terminal boards include the terminal boards functionally abbreviated within the Mark VI series as "TPRO" and "TREG." The TPRO terminal board is crucial to the functioning of the IS200VPROH1B module and greater drive assembly as it provides generator and line voltage inputs to the VPRO board. This is not the sole supply the TPRO board lends to the VPRO module; the TPRO also sends over independent speed pickups to each VPRO module, which is able to process them at high speeds. This VPRO turbine protection module detects faults on the TREG terminal board and communicates them to the greater control systems through use of IONet ethernet communications. The VPRO controls 12 relays on one associated board (TREG) that vote to control trip solenoids. This entire TREG and VPRO emergency turbine protection assembly is embedded below, in GE Industrial Systems' Figure 9-95.

The IS200VPROH1B is a later version of the VPRO board. Unlike the earlier VPROH1A board, the 1B version uses its J4 connector to support a second TREG board. The IS200VPROH1B uses IONet ethernet communications for interactions between control modules.  

The IS200VPROH1B is built with a connected front faceplate.  This is a double-wide faceplate that has multiple components built into its surface. This includes a power switch, D-shell cable connectors, LED indicators, and an IONet port for ethernet communications. This IONet port is almost exactly similar to the one used in standard contexts with VCMI component modules. The faceplate of the IS200VPROH1B has two set pins to keep the unit in place once it is set into the rack system. These pins are marked with the GE logo and with the unit’s identifying code. 

The IS200VPROH1B is made up of two stacked board components.  Each of these has two individual backplane connectors on its rear edge. The top unit includes a large heat sink placed behind the faceplate along with test points, integrated circuits, transformers, resistors, and capacitors. This VPRO module is classified as a revised model of printed circuit board; featuring a singular functional revision rated at a "B" grade. Before making a purchase of this GE Industrial Systems product or any component PCB, please ensure correct dimensions based on your PCB's revised product version. In addition to the "B"-rated functional revision of this VPRO, the IS200VPROH1B boasts a special conformal-type PCB coating; much more exhaustive in its total protective coverage than alternatives such as normal PCB coating.