IS200ESYSH1A - Excitation Control System I/O Interface Module

SPECIFICATIONS:

Part Number: IS200ESYSH1A
Manufacturer: General Electric
Series: EX2100e
Product Type: Excitation Control System I/O Interface Module
Number of input channels: 24
Input isolation in pack: 1500 V
Input Voltage Range: 5V DC / 24V DC
Output Voltage Range: 5V DC – 250V AC
Potential Transformer Inputs: 4 x 120V AC
Number of relay command channels: 12
Operating Temperature: 0°C to +55°C
Mounting Type: DIN Rail
Size: 15.875 cm high x 10.795 cm wide
Country of Origin: United States
Availability: In Stock
Manual: GEI-100772

FUNCTIONAL DESCRIPTION:

IS200ESYSH1A is an Excitation Control System I/O Interface Module Manufactured and Designed by General Electric as Part of the EX2100e Series used in Excitation Control Systems. The EX2100e Excitation Control System I/O Interface (ESYS) module interfaces basic I/O external to the exciter with the control system. It handles most of the system I/O interfaces, including PT and CT inputs, digital control inputs, customer analog I/O, general-purpose relays, and trip relay outputs. The interface to the customer I/O is through pluggable screw terminal boards and the interface to the EX2100e control system is through HSLA high-speed serial link (HSSL) daughter boards that are mounted on the ESYS. The ESYS module is used in both the static and regulator systems.

• C is largely depopulated for dual control applications. A signal from M2 is used to select whether M1 or M2 controls the redundant outputs.
• M2 and C are depopulated for simplex applications.
• Each section supports its own HSLA board for the HSSL interface to the control.
• Each section has its own 28 V DC power source connector.
• FEATURES OF EACH HSLA THAT ARE USED BY ESYS INCLUDE:
• RJ-45 CAT5e Ethernet interface and connector (J3).
• Field programmable gate array (FPGA) that supports both HSSL and ESYS functions.
• 3.3 V dc power supply for the ESYS board.
• Power-on and HSSL-initiated board reset signal.
• Green power-on LED and red attention LED (controlled by application FPGA).
• Green link LED and a yellow TX/RX LED for the HSSL.
• Local ambient temperature sensing.
• Board identification (ID) interface.

CUSTOMER I/O:

• Four general-purpose relay outputs (2 out of 3 voting redundancy at the coil driver).
• Two trip relay outputs (2 out of 3 voting redundancy at the contact outputs).
• Seven general-purpose contact inputs (optocoupler output fanned to control sections).
• One special-purpose contact input (optocoupler output fanned to control sections).
• Four 120 V ac potential transformer (PT) inputs (fanned to each control section).
• Two standard 5 A or 1 A Current Transformer (CT) inputs (fanned to each control section).
• Optional third 5 A or 1 A CT input, using the ECTX board (fanned to each control section).
• Two general-purpose analog inputs (independent delta/sigma conversion to each control section).

INSTALLATION:

The ESYS module is normally pre-installed in the EX2100e control cabinet, but it can also be part of a field-installed kit. To protect it from flexing, the ESYS is installed in a plastic carrier that consists of two identical halves. The two halves fit together to support the entire perimeter of the ESYS. Two screws hold the carrier to the ESYS and six mounting holes hold the assembly (ESYS, PT, and CT disconnect switches) to a metal bracket. Two additional screws provide the grounding of ESYS eyelets through the carrier and into the grounded bracket.

• Be sure to follow anti-static precautions including wrist grounding straps.
• Be sure all daughter board (HSLA and, if used, ECTX) standoffs, four per board, are present and tightened before assembling the board to the carrier. Daughter boards can be mounted to the ESYS before assembling to the carrier.
• Install the ESYS in a clean environment.
• Install it in a suitable cabinet where personnel will not be exposed to shock hazards.
• Install it where it will not be exposed to heat-generating equipment, EMI, or ambient conditions beyond the ESYS specifications.
• Mount the ESYS in a vertical orientation (for best convection cooling) using the holes provided in the bracket.
• Install the two ESYS eyelet grounding screws.
• Avoiding stress and flexing of the ESYS. Carefully plug in the connectors and attach the ter.

OPERATION:

The ESYS board receives a 28 V dc input for each of the three sections. This input is used directly by the ESYS and is also fed to each respective HSLA. Each HSLA produces 3.3 V dc, which is also used by both the ESYS and the HSLA. All other voltages required on the ESYS board are locally generated from the 28 V dc for that section. The M1 and M2 sections produce 55 V supplies for contact wetting of the eight discrete input circuits. Redundant power supplies allow any one section of the ESYS to be powered down and backed up without affecting the continuous system operation of the redundant versions of the EX2100e.

The HSLA and ESYS boards provide under-voltage detection on each supply created on the boards. The ESYS provides an out-of-tolerance signal to the HSLA for the annunciation of the EX2100e control. The ESYS also receives Power Good status from up to four external inputs. The control uses these signals to monitor the health of redundant power sources or power supplies. The power supply monitor connector is a 6-pin pluggable mini connector. A logic low level (less than 1 V dc) on the signal pins indicates a healthy power supply.

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FREQUENTLY ASKED QUESTIONS:

What is the function of the I/O Interface Module in an Excitation Control System?

The I/O Interface Module facilitates communication between the excitation system and external control or monitoring devices. It processes analog and digital signals to ensure proper control of the excitation system.

What types of signals does the I/O module handle?

The module typically manages analog inputs/outputs (4-20mA, 0-10V, etc.), digital inputs/outputs (dry contacts, relay outputs, opto-isolated signals, etc.), and communication signals (Modbus, Profibus, Ethernet, etc.).

How does the I/O module contribute to system reliability?

It ensures real-time signal processing, fault detection, and redundancy support for critical operations, reducing the risk of failures in the excitation system.

What are the typical voltage and current ratings for digital I/O channels?

Common digital input voltage levels are 24V DC or 48V DC, and digital output relays can handle up to 250V AC or 30V DC with current ratings of 2A-5A.