Functional Characteristics
Digital Input and Output: It can receive signals from various sensors to monitor the operating status and parameters of generators, such as voltage, current, and frequency. It can also output control signals based on control logic and algorithms to control the actuators of the excitation system, such as the switching of excitation power supplies and the adjustment of regulators.
Communication Interface: It can exchange data and communicate with the control system, transmit the collected data to the upper computer or controller, and receive control commands and parameter settings at the same time.
Fault Diagnosis and Handling: It has a self-fault diagnosis function, which can detect its own faults or abnormal situations and take corresponding protective measures to ensure the safe and stable operation of the system.
Programmability: It supports users to program and configure the control logic according to actual needs to achieve customized control effects and functions.
High Reliability: It adopts high-quality electronic components and advanced circuit design, and can operate stably in harsh industrial environments.

Main Functions: It provides input and output interfaces for the GE EX2100 excitation control system, connects different components in the system, such as ECTBG2 terminal boards, EPCT terminal boards, EROC, and ERDD, realizes signal transmission and interaction, ensures the normal operation of the excitation control system, and can be applied to simplex and redundant regulator control systems.

Hardware Structure: The front panel is equipped with a toggle switch, three LED indicators (active, power, and open), and a reset button, as well as three connectors for the EPCT model, testing, and the ECTB model respectively. There are two backplane connectors on the rear edge, marked as P1 and P2. The board contains hundreds of capacitors and resistors, as well as two CPU sockets and a Field-Programmable Gate Array (FPGA). The FPGA is used to control data collection and store it in Dual-Port Memory (DPM).

Practical Application Cases:

Application in Thermal Power Plants: A large thermal power plant adopted GE’s EX2100 excitation control system, in which the IS200ERIOH1A module, as a key I/O interface module, is responsible for connecting the excitation regulator with various sensors and actuators. It collects signals such as voltage and current of the generator in real time and outputs control signals to the excitation power supply device, ensuring that the generator can maintain stable voltage output under different loads, effectively improving power generation efficiency and power quality, and ensuring the reliable operation of the power plant.

Application in Hydropower Plants: A hydropower plant integrated the IS200ERIOH1A module into the excitation system of its hydro-generator. This module cooperates with the hydro-turbine governor to automatically adjust the generator power according to the change of the forebay water level. When the water level is lower than the set value, the module receives the governor signal to control the generator to reverse or adjust the speed; otherwise, it rotates forward. This realizes the precise matching between the generating power and the water level, and improves the water energy utilization rate. At the same time, the module can also monitor the generator temperature in real time, and automatically trigger shutdown protection if the temperature is too high to ensure the safety of the equipment.

Application in Wind Farms: In some large wind farms, the GE IS200ERIOH1A module is applied to the excitation control system of wind turbines. Due to the complex environment of wind farms, with large changes in temperature and humidity, and harsh conditions such as strong winds, the module can work stably in such environments by virtue of its robust industrial design. It transmits the operating status signals of the wind turbine to the central control system and receives control commands at the same time to accurately adjust the excitation current, so that the wind turbine can maintain the optimal power generation state under different wind speeds, improving wind energy conversion efficiency and power generation stability.