Product Description
The IS200TBCIH3C is a small PCB board component made by GE for the Mark VI. The Mark VI is part of the Speedtronic line and is designed for the management of heavy-duty steam/gas turbine systems. The Mark VI is additionally considered a legacy series; having been discontinued in the years since original mass-production. The IS200TBCIH3C functions within the greater drive assembly as a Contact Input Terminal with Group Isolation capability. This model PCB was manufactured domestically in the United States by GE Energy; more specifically in their Salem, Virginia plant. This is evident by the inclusion of the initial "IS200" portion in the IS200TBCIH3C product number.
Hardware Tips and Specifications
A number of important hardware specifications designates this IS200TBCIH3C Contact Input Terminal as a unique model. For starters, it accepts 24 dry contact inputs, which are wired to two barrier-type terminal blocks (TB1 and TB2.) The TB1 and TB2 terminal blocks each have 24 contact inputs with a nominal excitation voltage of 48 V dc. Within the greater Mark VI series, the IS200TBCIH3C works in conjunction with VCRC or VTCC component boards, in order to support both TMR (triple modular redundant) and simplex applications.
The IS200TBCIH3C is built with three 37-pin (female) D-type connectors, labeled JR1, JS1, and JT1. Cables connect from these connectors to their corresponding VCRC or VCCC component boards. The board also has two female plugs with three positions, each labeled JE1 or JE2. These female plugs were inccluded with the intention to provide power to the greater board assembly. The 24-position terminal blocks mentioned above are designed to be unplugged from the board and removed for maintenance as needed. The IS200TBCIH3C board also makes use of various other components, including resistors, diodes, and capacitors, as well as a single MOV (metal oxide varistor.) The IS200TBCIH3C's series of field contact outputs are protected through the use of a series of noise suppression filters, fittingly labelled NS. The positioning of these filters within the configuration of the IS200TBCIH3C and the greater drive assembly is derivable from the IS200TBCIH3C Data Sheet supplied above in the manuals tab.
The IS200TBCIH3C is mounted to a metal frame that protects the board on several edges. This metal frame component includes a shield bar located in front of the terminal blocks. More information about the function, wiring, installation, and components of the IS200TBCIH3C may be found using GE publication GEH-6421, or other manuals or datasheets that reference this part. During installation or replacement, please follow all safety procedures as recommended by the original manufacturer, as potentially lethal voltages may exist on this PCB's base board
All of the aforementioned components affixed to the base board of the IS200TBCIH3C Contact Input are protected beneath a layer of conformal-style PCB coating. While not a thick of a layer as the alternative normal-style PCB coating; this conformal-style coating is exhaustive in its coverage; spanning across every possible board and component surface available on the TBCI assembly. This IS200TBCIH3C product's style of PCB coating was also revealed through a diligent analysis of this product's unique part number; the "H3" desgination defines this PCB both as a group 3 series member and as a conformally-coated printed circuit board. Even more information can be derived from the IS200TBCIH3C part number through the breakdown supplied in the "manuals" tab above.
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