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- IS200TBAIH1BBB
- Analog Input Terminal Board
- USA
- 330.2 × 20 × 101.6 mm
- 1.1 kg
- Xiamen, China
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Product Overview
The GE IS200TBAIH1BBB is a Mark VI Analog Input Terminal Board used to interface analog field signals with the GE Mark VI turbine control system. It provides a physical termination point for incoming analog signals and organizes the connection between field instrumentation and the associated Mark VI I/O hardware.
In turbine applications, analog signals can represent operating parameters such as pressure, temperature, flow, level, or other continuously varying process measurements. The terminal board provides the field-side connection through which these signals enter the control architecture before being processed by the appropriate I/O and controller hardware.
The IS200TBAIH1BBB is therefore part of the signal interface layer rather than the main control processor. Its condition and wiring quality can directly affect the signals presented to the Mark VI control system, making correct terminal identification and field wiring inspection important during commissioning and maintenance.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | GE |
| Model | IS200TBAIH1BBB |
| Product Family | Mark VI |
| Product Type | Analog Input Terminal Board |
| Signal Type | Analog Input |
| Primary Function | Analog field signal termination and interface |
| Application | Turbine control and process measurement |
| Installation | Industrial turbine control cabinet |
| Dimensions | 330.2 × 20 × 101.6 mm |
| Weight | 1.1 kg |
Product Features
- Analog field signal termination for Mark VI systems
- Provides an interface between field instrumentation and Mark VI I/O hardware
- Suitable for continuously varying process measurements
- Supports organized field wiring within turbine control cabinets
- Helps separate field signal connections from controller-level processing
- Suitable for turbine instrumentation and auxiliary process measurements
- Accessible terminal arrangement for commissioning and maintenance
Working Principle
The IS200TBAIH1BBB provides the physical connection between analog field instruments and the Mark VI signal acquisition architecture.
A typical signal path is:
Analog Field Instrument → IS200TBAIH1BBB → Mark VI I/O Hardware → Mark VI Controller
The field instrument generates an analog electrical signal corresponding to the measured process variable. The terminal board provides the connection and routing point for that signal, while the associated Mark VI I/O hardware performs the actual signal acquisition and conversion required by the control system.
The terminal board itself does not execute turbine control logic. Its role is to maintain an organized and electrically appropriate interface between field wiring and the control-system I/O layer.
Role in a Mark VI Turbine Control Architecture
The IS200TBAIH1BBB belongs to the field termination and analog signal interface layer of a Mark VI control system. It allows analog instrumentation signals to enter the control architecture in an organized manner before they are processed by the associated I/O and controller hardware.
| System Element | Function |
|---|---|
| Analog Field Instruments | Measure continuously varying turbine or process parameters |
| IS200TBAIH1BBB Terminal Board | Terminates and interfaces incoming analog field signals |
| Mark VI I/O Hardware | Acquires and processes the connected analog input signals |
| Mark VI Controller | Executes control logic, sequencing, and supervisory functions |
| Engineering / Diagnostic System | Supports configuration, monitoring, and troubleshooting |
| Turbine Auxiliary Equipment | Generates or responds to the measured process conditions |
Correct wiring at the terminal board is important because an open circuit, incorrect termination, or wiring fault can appear at the control level as an abnormal process measurement.
Industrial Applications
| Application | Typical Use |
|---|---|
| Gas Turbine Control | Interfaces analog measurements used for turbine operation and monitoring |
| Steam Turbine Control | Provides field termination for analog process and equipment measurements |
| Pressure Monitoring | Connects pressure-related instrumentation to the Mark VI I/O architecture |
| Temperature Monitoring | Interfaces temperature measurement circuits used by turbine control functions |
| Flow Measurement | Provides a termination point for analog flow instrumentation |
| Generator Systems | Supports analog measurements associated with turbine-generator equipment |
| Balance-of-Plant Equipment | Interfaces selected continuous process measurements with the control system |
| Turbine Maintenance and Retrofit | Provides field termination hardware for existing Mark VI analog input circuits |
Installation and Maintenance
- Verify the Board Model — Confirm that the replacement board is IS200TBAIH1BBB and matches the intended Mark VI system configuration.
- Document Existing Wiring — Record terminal assignments, wire numbers, signal descriptions, and field device identification before removing an installed board.
- Isolate the Relevant Circuits — Follow approved control-system and electrical isolation procedures before working on field wiring.
- Check Signal Polarity and Termination — Verify each analog circuit against the applicable Mark VI wiring documentation before reconnecting the conductors.
- Inspect Terminal Connections — Check for loose conductors, damaged terminals, corrosion, or signs of overheating.
- Check Field Instrument Wiring — Inspect the cable route and field device connections when an analog signal appears unstable or incorrect.
- Verify Signal Continuity — Confirm continuity through the field circuit when an expected analog input is missing.
- Inspect Grounding and Shielding — Check the applicable signal grounding and shielding arrangement when analog readings show unexpected noise or fluctuation.
- Compare the Field Signal with the Controller Reading — When troubleshooting, compare the measured field signal with the value reported by the Mark VI system to help locate the fault.
- Check Associated I/O Hardware — If multiple analog channels are affected, inspect the associated I/O hardware and common connections rather than replacing the terminal board immediately.
- Perform Functional Testing — After replacement or rewiring, verify representative analog signals through the complete field-to-controller signal path.
- Follow Turbine Safety Procedures — Maintenance should comply with approved turbine shutdown, electrical isolation, lockout/tagout, and control-system procedures.
For troubleshooting, determine whether the problem originates in the field instrument, field wiring, terminal board, associated I/O hardware, or control configuration. A single abnormal channel often points toward a local circuit issue, while multiple affected channels can indicate a common interface or I/O problem.
Related Components
| Component | Function |
|---|---|
| Analog Field Transmitters | Generate analog signals representing measured process variables |
| Mark VI I/O Hardware | Acquires and processes analog input signals |
| Mark VI Controller | Executes control logic based on acquired process information |
| Field Wiring | Carries analog measurement signals between instruments and the terminal board |
| Signal Shielding / Grounding Hardware | Helps maintain signal integrity where applicable |
| Engineering / Diagnostic System | Supports configuration and signal troubleshooting |
| Turbine Auxiliary Equipment | Provides the process conditions being measured |
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| GE IS200TBAIH1BBB | Mark VI Analog Input Terminal Board | Analog field signal termination |
| GE Mark VI | Turbine Control System | Gas and steam turbine control |
| GE Mark VI Analog I/O Hardware | Analog Input / Output Hardware | Acquisition and processing of analog field signals |
| GE Mark VI Terminal Boards | Field Interface Hardware | Field wiring termination and signal distribution |
| GE Mark VI Control Processor | Turbine Control Processor | Control logic, sequencing, and system coordination |
Key Advantages
- Dedicated interface for analog field signals
- Organizes analog instrumentation wiring within the Mark VI architecture
- Supports turbine and process measurement applications
- Provides accessible field termination points
- Separates field connections from controller-level processing
- Suitable for maintenance and replacement of existing Mark VI installations
Technical FAQs
What is the main function of the GE IS200TBAIH1BBB?
The IS200TBAIH1BBB is a Mark VI Analog Input Terminal Board. It provides the field-side termination and interface for analog signals before they are acquired by the associated Mark VI I/O hardware.
Does the IS200TBAIH1BBB convert analog signals into control decisions?
No. The terminal board provides the physical signal interface. Analog acquisition and processing are handled by the associated Mark VI I/O hardware, while control decisions are executed by the Mark VI controller.
What should be checked when an analog input shows an incorrect value?
Check the field instrument, wiring continuity, terminal assignment, polarity, grounding or shielding arrangement, and associated I/O channel. Comparing the actual field signal with the value reported by the Mark VI system can help identify where the signal path is being affected.
What should be verified when replacing the IS200TBAIH1BBB?
Verify the exact board model and system configuration, document all existing terminal assignments, isolate the relevant circuits, and reconnect the field wiring according to the applicable Mark VI documentation. Functional testing should confirm the complete analog signal path after replacement.