GE IS200EMIOH1ACA is an Excitation Control Board for Mark VIe systems, integrating I/O and control logic to manage generator excitation. It processes feedback signals, executes control algorithms, interfaces with field devices, provides isolation and diagnostics, operates at -40°C to +70°C, meets UL/CE, ensuring stable and efficient generator excitation control.
GE IS200EMIOH1ACA Excitation Control Board: Comprehensive Product Overview
The GE IS200EMIOH1ACA is a high-performance Excitation Control Board (serving as the core main
I/O hub) engineered exclusively for GE’s EX2100 excitation control system and Speedtronic Mark
V/V gas turbine control ecosystems . Its fundamental role is to act as the "signal orchestrator" of
excitation systems, bridging the gap between the DSPX master controller and field devices by
aggregating critical input signals, processing control logic, and distributing precise output commands
—all while ensuring redundancy and fault tolerance for mission-critical power equipment. Unlike
generic I/O boards, it is purpose-built for excitation scenarios, integrating 12 dedicated relay
channels, PT/CT signal handling, and gate pulse transmission capabilities that directly enable
generator excitation regulation and emergency protection .
Designed as a compact, surface-mount module with dimensions of 8.26 cm × 4.19 cm × 12.1 cm, it
fits seamlessly into EX2100 control racks, optimizing space in tight industrial cabinets . The board
leverages dual backplane connectors (P1 and P2) to interface with terminal boards (ECTB, EACF, EXTB)
and execution modules: it receives PT/CT voltage/current signals, contact inputs, and sensor data
from the field, then transmits gate pulse signals to the ESEL (Selector) and EGPA (Gate Pulse
Amplifier) boards to regulate excitation current . In simplex or triple-redundant (TMR) configurations,
it supports two-out-of-three voting logic for critical control parameters—minimizing false trips via
software-implemented fault tolerance (SIFT) . Its rugged design, certified for harsh industrial
environments, includes a conformal-coated PCB to resist dust and moisture, while compatibility with
hot-swappable operation ensures maintenance can be performed without system shutdowns .
Whether deployed in gas turbine generators, thermal power plants, or industrial motor excitation
systems, it delivers low-latency signal processing and reliable control to maintain equipment stability .
Detailed Specification Table
Category
Details
Core Function
Acts as main I/O hub for EX2100 excitation systems; aggregates PT/CT/sensor inputs, transmits gate pulses to ESEL/EGPA boards, and enables 12-channel relay control; supports TMR voting logic for fault tolerance .
Mechanical Specifications
Compact surface-mount design; dimensions: 8.26 cm (H) × 4.19 cm (W) × 12.1 cm (D); dual backplane connectors (P1/P2); compatible with EX2100 control racks .
Electrical & Signal Handling
Integrates 12 relay channels; processes PT/CT voltage/current signals and contact inputs; transmits gate pulse signals via backplane; powered by system backplane (industrial-grade DC supply) .
Environmental Ratings
Ruggedized for industrial environments; conformal-coated PCB (resists dust/moisture); operates in temperature ranges typical for power plant control cabinets (-20°C to 65°C) .
System Integration
GE EX2100 excitation control system; Speedtronic Mark V gas turbine controls; interfaces with DSPX controller, ESEL/EGPA boards, and ECTB/EXTB terminal boards; supports simplex/TMR configurations .
Installation & Maintenance
Hot-swappable for minimal downtime; front-panel test points for diagnostics; no external jumpers required (configurable via system software); lightweight design for easy rack mounting .
Key Applications
Gas/steam turbine generator excitation control; thermal power plant generator regulation; industrial motor excitation systems; petrochemical captive power facilities .
Compliance & Support
Manufactured in the USA; part of GE’s EX2100 series; referenced in Speedtronic control system manuals; typically backed by a 1–3 year warranty .
Our Advantages
1.100% Origin goods
2.In stock
3.1-year warranty
4.Timely delivery (1-3working days)
5.Competitive price.
Great benefits
1. lower your support costs
2. Provide on-going availability of automation replacement parts
3. Large number of inventory
4. Support door-to-door inspection
Service
Q1.Quality Guarantee
we give 1 year guarantee to ensure your business.
Q2.MOQ
1 piece
Q3.Payment terms
T/T
Q4.Currency
USD,RMB,EUR,GBP
Q5.Package
Shipment port: we export from Xiamen
Q6.Customer Service
24 hours by email
FAQs
What is IS200EMIOH1ACA?
It is a Exciter Main I/O Board and is part of the GE Speedtronic EX2100 gas turbine control system.
Can I replace a failed Main I/O board while the exciter is running in a redundant control system?
Yes, it is possible to replace a failed board while the exciter is running. The redundant control system allows for hot-swapping of the failed board without interrupting the operation of the exciter.
What happens if I choose not to replace the failed board?
If you choose not to replace the failed board, the exciter will continue to run on the two remaining controllers in the redundant setup. However, in the unlikely event of a second failure, the exciter will shut down as a safety precaution.
How does the redundant control system ensure continuous operation?
The redundant control system is designed to provide fault tolerance and ensure continuous operation of critical equipment such as the exciter. By having multiple controllers in the system, it can withstand the failure of one controller without impacting the operation. However, it's essential to promptly address any failed components to maintain system reliability.
