About the IS210DTRTH1AA
Model number IS210DTRTH1AA was produced to work as a trip transition board. The primary purpose of this board is to provide an interface between the DRLY and VTUR boards. There are up to six trip functions that will be used with the interfacing capabilities on the VTUR board to the DRLY board. Please note that the DTRT model will be used rather than the typical TRPG board in the Mark VI series. There is only one version of this board available which is the Simplex version.
There are only four main visible components of the DTRT board three of which are sub-D pin connectors with the other being a three-screw Euro block terminal. The Euro block terminal is labeled as TB1 and can be used for ground or SCOM connection. Please note that the ground connection must be as short as possible. The three sub-D pin connectors are used for cabling to the corresponding VTUR and DRLY boards, the two connectors labeled J1 and J2 will connect to the first and second available VTUR boards, with the J3 connector being the connector between the DRLY board which has the six relay circuits.
When the IS210DTRTH1AA model is being operated with VTUR I/O terminations there are several other boards that can potentially be used, these boards are TTUR, TRPL, TRPS, TRPG, and DTUR boards. The latter of these boards is described as a termination box type board, for which the DTRT and DRLY boards also are.
If you would like more information on how the DTRT board can be used and work with the other VTUR I/O termination boards refer to table four on page four of the GER-4193A Mark VI Turbine Control System manual.