Technical Specifications

The IS200ERIOH1A includes two backplane connectors designated P1 and P2. These connectors are located on the board’s back edge. Two CPU sockets are present on the circuit board. Additionally, a field-programmable gate array (FPGA) handles data collection. This FPGA stores acquired data into DPM (Dual Port Memory). Hundreds of capacitors and resistors populate the board’s surface. Several integrated circuits support the IS200ERIOH1A operations.

Mounting Configurations

The IS200ERIOH1A mounts in different locations based on system type. For simplex applications, the board mounts directly in the ERBP. The ERBP stands for Exciter Regulator Backplane. In this configuration, only one IS200ERIOH1A is required. For redundant applications, three boards are necessary. These attach to the ERRB M2 and C positions. They also attach to the ERBP M1 location. The M1, M2, and C controllers all share the same PCB.

Interface Capabilities

In simplex systems, the IS200ERIOH1A interfaces with multiple other boards. It connects to the ERO (Exciter Regulator Options) board. It also interfaces with the ERDD (Exciter Regulator Dynamic Discharge) board. Customer I/O signals reach the ECTBG2 terminal board through this interface. The EPCT terminal board also receives signals via the IS200ERIOH1A. For redundant applications, the board interfaces with the ERRR. The ERRR stands for Exciter Regulator Redundant Relay.

Backplane Connections

The IS200ERIOH1A connects to backplanes using two twenty-five pin connectors. These connectors link the board to the ERBP for simplex systems. For redundant systems, connection occurs through the ERRB backplane. The board interfaces with EPCT and ECTB through these same connectors. Consequently, the IS200ERIOH1A serves as a central communication hub. Signal routing between various exciter regulator boards happens through this device.

FPGA and Data Management

The FPGA on the IS200ERIOH1A controls all data acquisition functions. This field-programmable gate array manages storage into DPM. Dual Port Memory allows simultaneous access by multiple processors. The FPGA also handles data collection timing and sequencing. For troubleshooting, the IS200ERIOH1A provides diagnostic information through this memory. No external programming is required for normal operation.

Physical Characteristics

The IS200ERIOH1A features a distinctive double-wide front faceplate. This faceplate has a toggle switch mounted on it. The switch allows manual control of certain board functions. Many other components are also affixed to this faceplate. The board’s back edge contains the P1 and P2 backplane connectors. Surface-mounted components include hundreds of capacitors and resistors. Two CPU sockets accept compatible processor modules. The IS200ERIOH1A measures standard Mark VI board dimensions.

Revision Information

The “A” at the end of IS200ERIOH1A indicates a specific revision level. This particular unit is a revision of the original part design. Revision A incorporates improvements over earlier non-suffix versions. Always verify revision compatibility with your existing system. The IS200ERIOH1A may have later revisions available. Contact technical support for revision upgrade guidance.

Installation Guidelines

Power down the EX2100 system completely before board installation. Insert the IS200ERIOH1A carefully into the designated backplane slot. Ensure the P1 and P2 connectors align properly with the backplane. Press firmly but gently until the board seats fully. Secure the board using the ejector clips at top and bottom. For simplex systems, install the board in the ERBP M1 position. For redundant systems, install three IS200ERIOH1A boards. Place one in ERBP M1, one in ERRB M2, and one in ERRB C.

Configuration Settings

Set the toggle switch on the faceplate according to system requirements. Refer to the EX2100 system manual for switch position meanings. No other user-configurable settings exist on the IS200ERIOH1A. The FPGA automatically configures itself at power-up. System software recognizes the board and assigns appropriate functions. After installation, verify communication with the ERDD and ERO boards. Run a diagnostic test to confirm proper IS200ERIOH1A operation.

Package Contents

The IS200ERIOH1A includes the following items in its packaging:

• Exciter Regulator I/O board (IS200ERIOH1A) – 1 piece

• Toggle switch (pre-installed on faceplate) – 1 piece

• Anti-static protective bag – 1 piece

• Product identification label – 1 piece

Note: Backplane, terminal boards, and mounting hardware are sold separately.

Common Applications

The IS200ERIOH1A serves critical excitation control functions. Use it in gas turbine excitation systems for power generation. Apply it in steam turbine EX2100 regulator applications. The IS200ERIOH1A is essential for hydro turbine excitation control. For industrial synchronous motor excitation, this board provides I/O. It works in both new installations and Mark VI upgrades. Power plants worldwide rely on this IS200ERIOH1A for reliable excitation regulation.

Frequently Asked Questions (FAQ)

1. What is the difference between IS200ERIOH1A and IS200ERIOH1?
The IS200ERIOH1A has an “A” revision suffix indicating design improvements. The non-suffix version is an earlier production release.

2. Can I use one IS200ERIOH1A for redundant system operation?
No, redundant systems require three IS200ERIOH1A boards. One mounts in ERBP M1, one in ERRB M2, and one in ERRB C.

3. Does this board work with Mark VIe systems?
The IS200ERIOH1A is designed for Mark VI EX2100 systems. Mark VIe uses different I/O boards and is not compatible.

4. What does the toggle switch on the faceplate control?
The toggle switch on IS200ERIOH1A selects specific operating modes. Consult the EX2100 manual for exact switch function details.

5. How do I know if my IS200ERIOH1A is functioning correctly?
Run the EX2100 system diagnostic tests to check IS200ERIOH1A status. The system software reports any board faults or communication errors.