IS200STTCH2ABA

The GE IS200STTCH2A is a high-reliability Status, Timing & Trip Control Handler (STTCH) board developed for integration within GE EX2100 excitation systems and Mark VI turbine control architectures. This module is responsible for coordinating trip logic processing, timing event synchronization, and critical status signal management inside the control cabinet.

In turbine and generator environments where protection response time is crucial, the STTCH board ensures that trip signals, shutdown commands, and timing-based interlocks are processed accurately and delivered without delay. It plays a central role in maintaining safe turbine operation by integrating protective logic into the broader control framework.

Technical Specifications

Parameter	Specification
Model	IS200STTCH2A
Module Type	Status, Timing & Trip Control Handler Board
System Compatibility	EX2100 / Mark VI Speedtronic
Primary Function	Trip logic handling, timing synchronization, status routing
Input Signals	Discrete status inputs, trip permissives, timing triggers
Output Signals	Trip commands, logic outputs to relay/interface modules
Signal Conditioning	Isolation buffering, transient suppression
Protection Support	Integrated trip path management
Mounting	Rack/backplane mounted in control cabinet
Operating Environment	Industrial cabinet conditions
Dimensions (L × W × H)	250 × 120 × 35 mm (approx.)
Weight	0.90 kg (approx.)

Dimensions and weight are provided in combined format for installation planning.

Recommended Related Modules

To build a complete turbine protection and excitation rack, the IS200STTCH2A is commonly integrated with:

IS200DSPXH1D – Digital Signal Processor Control Board
IS200STCIH2A – Status & Timing Control Input Handler
IS200STAOH2A – Status & Timing Output Handler
IS200DRLYH1B – Relay Output Terminal Board
IS200EMIOH1A – Main I/O Interface Board

These modules work together to manage input acquisition, logic processing, trip activation, and field signal output.

Popular GE Mark VI / EX2100 Boards

Systems incorporating the STTCH board frequently include:

IS200EACFG3A – AC Feedback Board
IS200EDCFG1B – DC Feedback Conditioning Board
IS200ESELH2A – Exciter Selector Board
IS200EXHSG3A – High-Speed Gate Control Board
IS200ERBPG1A – Remote I/O Backplane Module

Together they provide a comprehensive excitation, monitoring, and protection solution.

Applications

The IS200STTCH2A is deployed in:

Steam turbine generator protection systems
Gas turbine control cabinets
Excitation trip and interlock management
Timing-critical shutdown coordination
High-availability power generation facilities

Its integrated trip logic ensures rapid response during fault conditions, helping protect both mechanical and electrical assets.

Advantages

Integrated Trip Logic Handling
Centralizes turbine and excitation trip signal processing for faster, coordinated shutdown.

Precise Timing Synchronization
Ensures time-critical events are handled consistently across control modules.

High Noise Immunity
Buffered and conditioned inputs improve reliability in electrically demanding environments.

Modular Architecture
Designed for straightforward replacement and integration within standard GE racks.

Protection-Focused Design
Optimized for safe turbine and generator shutdown management.

Technical FAQs

What is the primary function of the IS200STTCH2A?
It manages turbine and excitation trip logic, status routing, and timing synchronization.
Where is this board installed?
Inside the turbine or excitation control cabinet on a rack or backplane assembly.
What signals does it process?
Discrete trip inputs, permissives, timing triggers, and shutdown logic commands.
Why is trip coordination important?
Accurate and rapid trip execution protects turbines and generators from damage.
What are its physical dimensions?
250 × 120 × 35 mm (approx.).
What is its approximate weight?
0.90 kg (approx.).
Does it interface with relay output boards?
Yes, commonly paired with relay terminal boards for physical trip actuation.
Is signal isolation included?
Yes, buffering and transient suppression improve signal integrity.
Can it operate in redundant architectures?
Yes, it is compatible with redundant control system configurations.
Why is this board critical in power plants?
It ensures safe, synchronized shutdown during fault conditions, protecting high-value turbine and generator equipment.