Functional Description

ECM-2 performs functions previously performed in ECS2100 systems by three, separate modules:

Sensor Input Module (SIM), Exciter Control Module (ECM), and Firing Control Interface Module (FCIM).

The functionality of these modules has been retained with some enhancements.

Sensor Inputs

Twenty-four, high-speed analog inputs (channels) collect data (sensing values) from the generator PTs

and CTs and other analog signal sources through hard-wired inputs. Fiber-optic connections receive

digital signals supplied by the DECS-2100 system Digital I/O Modules. Analog and temperature signals

supplied by the DECS-2100 system Analog I/O Modules are also received through fiber-optic connections

on the isolation transducer card interface. Analog inputs are digitized and provided to the excitation

circuitry for interpretation.