IS200STAIH2ACB IS200STAIH2ABA

The GE IS200STAIH2A is a robust Start Inhibit and Auxiliary Interface (STAI) board designed for GE EX2100 Excitation Control Systems and Mark VI Speedtronic turbine automation platforms. This board serves as a centralized interface for start inhibit logic, auxiliary interlocks, status aggregation, and synchronization gating—ensuring controlled engine start sequences and safe excitation conditions across distributed control architectures. It provides engineers with precise logic coordination for start/stop interlocks, generator permissives, and auxiliary feedback, which are critical in protecting turbine generators and maintaining system integrity in industrial environments.

Technical Specifications

Parameter	Specification
Model	IS200STAIH2A
Module Type	Start Inhibit & Auxiliary Interface Board
System Compatibility	GE EX2100 / Mark VI Speedtronic
Primary Function	Start inhibit management, auxiliary interlock interface
Signal Inputs	Binary permissive signals, status feedback from I/O modules
Signal Outputs	Start inhibit assert/de-assert, auxiliary gate permissives
Auxiliary Interfaces	Multiple discrete logic inputs/outputs
Protection Features	Isolation buffering, noise suppression
Operating Temp. Range	Industrial cabinet range (0 °C to +60 °C typical)
Mounting	Backplane or rack mount in control cabinet
Dimensions (L × W × H)	250 × 120 × 35 mm (approx.)
Weight	0.80 kg (approx.)
Typical Usage	Interlock and start/stop permissive coordination in excitation and turbine control systems

Dimensions are approximate and provided in length × width × height format for integration planning.

Recommended Companion Modules

To form a comprehensive turbine excitation and control logic rack, the IS200STAIH2A is commonly paired with:

IS200DSPXH1D – Digital Signal Processor Board
IS200ESELH2A – Exciter Selector Board
IS200ERBPG1A – Remote I/O Backplane Board
IS200DRLYH1B – Relay Output Terminal Board
IS200EMIOH1A – Main I/O Interface Board

These modules together provide feedback acquisition, logical control processing, and field signal interfacing essential for reliable turbine generation control.

Popular GE Mark VI / EX2100 Modules

Configurations that include the IS200STAIH2A often also feature:

IS200EACFG3A – AC Feedback Board
IS200EDCFG1B – DC Feedback Board
IS200EHPAG1A – Gate Pulse Amplifier Board
IS200EXHSG3A – High-Speed SCR Gate Control
IS200EDEXG1B – De-Excitation Board

These modules support complete excitation control and protective logic in industrial systems.

Applications

The IS200STAIH2A is suitable for:

Turbine generator start/stop permissive logic control
Generator start inhibit interlocks for safe excitation application
Auxiliary signal aggregation and status conditioning
Industrial power plant and utility automation systems
SCADA-integrated excitation control environments

Its auxiliary logic interface helps maintain safe operating conditions by coordinating permissive signals before excitation is allowed.

Key Advantages

Start Inhibit Logic Integration
Centralizes permissive and inhibit logic to prevent unsafe excitation during start sequences.

Auxiliary I/O Interface
Aggregates auxiliary field signals for use in excitation and controller logic.

Industrial-Grade Reliability
Designed for continuous operation in rugged cabinet environments.

Modular & Serviceable
Modular construction enables easy replacement and field serviceability.

Signal Isolation & Noise Suppression
Integrated buffering and suppression improve logic integrity in electrically noisy environments.

Technical FAQs

What is the main purpose of the IS200STAIH2A?
It manages start inhibit logic and auxiliary interlock interfacing in turbine/excitation control systems.
Where is this board installed?
Inside the control cabinet, typically mounted on a rack/backplane within EX2100 or Mark VI systems.
What interfaces does it support?
Multiple discrete logic inputs/outputs for permissives and auxiliary signals.
What environments can it operate in?
Designed for standard industrial cabinet conditions (0 °C to +60 °C).
Why is start inhibit logic important?
It prevents excitation application before safe conditions are met, protecting generator and control hardware.
Does it support SCADA integration?
Yes — when connected through the main I/O interface and supervisory systems.
How large is the module?
Approximately 250 × 120 × 35 mm.
What is its weight?
Approximately 0.80 kg.
Can it be replaced during maintenance?
Yes — it is designed as a modular, field-replaceable board.
What other modules does it commonly work with?
DSP, selector, backplane, relay, and main I/O interface boards in turbine and excitation racks.