Tricon 2770H HART Interface Modules

The analog input (AI) module consists of three separate input channels. Each input channel receives variable voltage signals from each point, converts them to digital values, and transmits the values to the three main processor on-demand modules. In TMR mode, a median selection algorithm is then used to select a value to ensure correct data for each scan. Each input point is sensed to prevent… The way to perform a single failure on one channel affects another. Each analog input module is maintained intact and each channel is continuously diagnosed. Any diagnostic failure channel activates the fault indicator module, which in turn activates the chassis alarm signal. The module fault indicator reports only one channel fault, not the module fault. The module fault indicates how many two fault channels can operate normally. The analog input module supports hot backup, enabling online replacement of faulty modules. The analog input module requires a separate external terminal panel (ETP) connected to the Tricon by cable
The bottom plate. Each module has mechanical keys for proper installation of the Tricon chassis.