IS200SDIIH1A - SDII Isolated Discrete Input Terminal Board | GE Mark VIe | B7B

IS200SDIIH1A is a General Electric SDII Isolated Discrete Input Terminal Board for GE SPEEDTRONIC™ Mark VIe control systems. The SDII function supports discrete 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 the supported point or channel information as 16 discrete inputs. The electrical or signal interface is documented as 24, 48, 125, 250 V dc and 115/230 Vac point isolated with line-break detection. The hardware uses a S-type Euro-style terminal board form factor. The system architecture should be matched to the documented configuration, including Simplex per listed SDII configuration. It should be matched with compatible hardware such as PDII I/O pack where that pairing is used in the site configuration.

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.