Description
Part No.: IS200ECTBG1ADE
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Temperature Operating: -30 to 65 o C
Product Type: Exciter Contact Terminal Board
Series: EX2100
Functional Description
IS200ECTBG1ADE is an Exciter Contact Terminal Board developed by GE. It is a part of EX2100 excitation system. The terminal board facilitates excitation contact outputs and inputs within the EX2100 Excitation Control system. There are two distinct versions of this terminal board: the ECTBG1 board, utilized exclusively in redundant control scenarios, and the ECTBG2 board, employed solely in simplex control configurations. Each board is equipped with specific functionalities tailored to its respective control setup.
Features
- Trip Outputs: Both versions of the terminal board incorporate two trip outputs, which drive customer lockout mechanisms. These trip outputs are under the control of the EMIO (Exciter Module Input/Output) board, ensuring precise and timely response to system conditions.
- General Purpose Contact Outputs: Additionally, each board includes four general-purpose Form-C contact outputs, also managed by the EMIO board. These outputs provide flexibility for various control and monitoring functions within the excitation system.
- Auxiliary Contact Inputs: Equipped with six auxiliary contact inputs, which are powered (wetted) with 70 V dc and monitored by the board. These inputs serve to interface with external devices or systems, enhancing the overall functionality and versatility of the excitation control setup.
- Specialized Monitoring: Specific contact inputs, such as the 52G and 86G contacts, are powered with 70 V dc and monitored by the CTB board. This monitoring capability ensures comprehensive oversight of critical system parameters, enabling effective fault detection and troubleshooting.
Contact Inputs
In both simplex and redundant control scenarios, contact inputs play a crucial role in facilitating communication and monitoring within the EX2100 Excitation Control system. Here's an expanded explanation of the contact inputs and their functionalities in each case:
- Similarities in Simplex and Redundant Cases: In both simplex and redundant control configurations, contact inputs serve similar purposes. However, in redundant control setups, these inputs are fanned out to multiple controllers, including M1, M2, and C, to ensure redundancy and fault tolerance. Conversely, in simplex control, only the M1 controller is connected to these inputs.
- Auxiliary Contact Inputs: The terminal board features six customer-supplied auxiliary contact inputs, powered and monitored by ECTB using a 70 V dc supply from plugs J13M1 and J13M2. This voltage is resistor-isolated and supplied to the contacts, with a wetting voltage ranging from 63 to 84 V dc. The state of these contacts is continuously monitored, with the resulting signal driving a red indicating LED. Additionally, the signal fans out to controllers M1, M2, and C, enabling comprehensive monitoring and control.
- 52G Contact Monitoring: One contact from 52G is also monitored using the 70 V dc excitation method, similar to the auxiliary inputs. The status of this contact is indicated with a red LED, providing visual feedback on its state.
- 86G Contact Monitoring: Similarly, one contact from 86G is wetted with a nominal 70 V dc, and its state is monitored by controllers M1, M2, and C. This contact input undergoes the same monitoring process as the auxiliary inputs and the 52G contact, ensuring consistent oversight and control across all critical system parameters.
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