GE IS200EMIOH1AEB

The IS200EMIOH1AEB is a dedicated main I/O board for the GE EX2100/Mark VI excitation system, responsible for the acquisition of CT/PT analog signals and switch quantities, forwarding excitation gate control pulses, and driving protection trip relays. It adopts VME dual-high board card and backplane bus communication, and is used in the excitation control cabinet of gas/steam turbine generator sets, which belongs to the core spare parts of power stations. It must be installed with anti-static power off and used in conjunction with ESEL, EGPA and terminal boards. It cannot work independently of the EX2100 system.

Core Function

1. Centralized I/O signal acquisition and distribution

Uniformly manage terminal board signals such as EPCT, ECTB, EACF, and EXTB, and receive analog inputs from PT voltage transformers, CT current transformers, and passive contact switch quantities.

2. Gate pulse forwarding

Logic-level gate control pulses are sent to the ESEL board, which is then transmitted to the EGPA power amplifier board via ESEL to control the conduction of the excitation power bridge thyristors, serving as the signal hub for excitation regulation.

3. Relay drive and trip output

It provides relay drive and pilot trip relay output to achieve excitation protection, unit trip, and alarm contact output.

4 Fault detection and status reporting

On-board FPGA self-checks, real-time monitoring of signal links, power supply, and backplane communication status, and uploading faults and alarms to the system's main control processor.

5. Backplane bus interaction

Through the P1/P2 VME backplane connector, data is exchanged at high speed with the DSPX, ESEL and other boards in the rack to complete the interaction of the excitation closed-loop regulation link

Product Advantages

1. Architecture form

Single-slot, dual-height VME Eurocard board, installed in the EX2100 excitation control cabinet rack, compatible with Mark VI system backplane EBKP

2. Signal compatibility

It simultaneously supports the mixed processing of analog and discrete contact quantities, taking into account voltage and current acquisition as well as protection logic output.

3. Visualization of board card self-check

On-board power LED, status IMOK indicator light, quickly determine the power supply status of the board card and the operating status of the FPGA. There are no external jumpers or fuses on the board. All signals go through the backplane.

4. Industrial high anti-interference design

Optimized for strong electromagnetic interference, vibration and temperature fluctuations in power plants, meeting the long-term 24-hour continuous operation requirements of power generation equipment.

5. System strong binding

Exclusive EX2100 excitation control platform, cannot be used independently as a general-purpose PLC I/O, belongs to the excitation dedicated board card

6. Version distinction

The suffix "EB" indicates a hardware revision version. Its functional framework is the same as that of the basic model IS200EMIOH1A, with only minor adjustments to the PCB layout and component versions. It can be replaced in the same slot

Application scenarios

1. Gas turbine power plant

GE Speedtronic Mark VI gas turbine with EX2100 excitation system, synchronous generator excitation regulation, grid connection voltage regulation, overexcitation/underexcitation protection collection

2. Steam turbine power plant

Large steam turbine generator set excitation control cabinet, voltage closed-loop control, stator/rotor signal acquisition, protection trip circuit drive

3. Combined cycle power station

one-to-one, multi-axis combined cycle unit excitation cabinet spare parts, renovation and replacement

4. Standby/renovation scenarios

Replacement of spare parts for existing EX2100 units, localization renovation of excitation systems, and maintenance of GE excitation systems for overseas power stations.

Not applicable: General-purpose PLCS, ordinary frequency converters, and non-GE EX2100 series excitation cabinets

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