IS200EXHSG2A GE EX2100, EXCITER H.S. RELAY DRIVER

Description:

The IS200EXHSG2A is an Exciter High-Speed Relay Driver Board produced by General Electric, integral to the EX2100 control systems. This board serves as a critical component within the EX2100 Excitation Control framework, providing drivers for direct current (dc) contactors and pilot relays essential for field flashing and de-excitation processes. There are four distinct versions of the EXHS board, each tailored to the specific type of 41 dc contactor employed. These boards interface with the Exciter Backplane Board, connecting either to three Exciter Main Input/Output Boards (EMIO) in redundant control configurations or a single EMIO board in simplex control setups.

Key Features:

The EXHS board incorporates pilot relays for flashing relays 53A and 53B, alongside pilot relays for the de-excitation relay KDEP. It conditions de-excitation status signals from the Exciter De-Excitation Board (EDEX) before transmitting them to the EMIO. Similarly, it processes crowbar status signals received from the De-Excitation Control Board and forwards them to the EMIO. The board monitors feedback from three contact inputs—41, 53A, and 53B—powered by a 70 V dc supply.

All electrical connections on the board are energized by the exciter power supply, which subsequently routes the generated status signals to the EMIO.

Contact Inputs:

Contacts 53A, 53B, and 41 are integrated into the EXHS board for monitoring by the EMIO. In both simplex and redundant control scenarios, these inputs function similarly; however, in redundant control applications, the inputs are distributed across M1, M2, and C controllers.

In simplex control modes, signals are exclusively directed to the M1 controller's EMIO. The EXHS board powers these three connections using a 70 V dc supply, which is sourced through resistors connected at terminals J12M1 and J12M2. The wetting voltage can vary between 63 and 84 V dc. The signal output is then distributed to M1, M2, and C controllers, while the contact input monitoring circuitry resides on the EMIO board.

Application Data:

Close function contactor drivers include models K41 (for M1, M2, and C), with flashing pilot relays designated as K53A and K53B. The sole de-excitation pilot relay is identified as KDEP. Pin connectors J505, J508, and J515, all 25-pin, facilitate cable connections to EMIO boards M1, M2, and C, respectively. These connectors carry analogous signals with comparable wiring schemes, where J505 links to M1, J508 to M2, and J515 to C. Notably, J515 does not convey de-excitation or crowbar signals. For auxiliary contact wetting purposes, plugs J12M1 and J12M2 introduce a 70 V dc supply from the M1 and M2 power sources.

Datasheet Link:

IS200EXHSG2A GE EX2100, EXCITER H.S. RELAY DRIVER PDF Datasheet