General Electric IS200TDBTH2ACD Mark VIe PDIO Terminal Board

Description

The GE IS200TDBTH2ACD is a Programmable Discrete Input/Output (PDIO) terminal board designed for the GE Mark VIe Speedtronic turbine control system. It functions as the critical physical interface between field-mounted discrete devices and the Mark VIe distributed I/O architecture. This board is engineered for TMR (Triple Modular Redundant) applications, ensuring high reliability in turbine control and protection functions.

Features

• Designed for Mark VIe PDIO I/O packs (IS220PDIOH1A/H1B).
• Supports 24 group-isolated discrete contact inputs.
• Provides 12 Form-C relay outputs for field device control.
• Supports external wetting voltages of 24 V DC, 48 V DC, or 125 V DC.
• Robust DIN-rail mounting configuration.
• Integrated surge and high-frequency noise protection via onboard shield strips.

Applications

• Oil & Gas Refineries: Controls compressors and ESD flame/pressure switches in hazardous areas.
• Chemical Processing Plants: Manages isolated discrete signals protected against high-frequency interference and surges.
• Automotive Manufacturing: Coordinates large-scale robotic assembly lines within the Mark VIe ecosystem.
• Electronics & Semiconductor Fabs: Supports automated assembly processes requiring high uptime.
• Pharmaceutical Production: Facilitates high-precision processing with safety-critical interlocks.

Technical Specifications

Installation Guidelines

• Mounting: Designed for standard DIN-rail installation within the control cabinet.
• Wiring: Each terminal accepts two 3.0 mm² (#12 AWG) wires. Use spade or ring-type lugs, or terminate bare wires directly using the provided captive clamps.
• Grounding: Field wiring must be routed near the shield strips located on the left side of the metal base to ensure effective surge and noise suppression.
• Handling: Ensure power is disconnected before installing or removing the board or associated I/O packs to prevent electrical damage.
• Redundancy: This board is intended for TMR configurations and requires the appropriate number of PDIO packs for correct operation.

FAQ

What is the primary function of the IS200TDBTH2ACD?

It acts as a terminal interface for digital signals (on/off states) between external sensors and the turbine control system, providing 24 group-isolated contact inputs and 12 Form-C relay outputs.

Can it operate with a single I/O pack?

No. The IS200TDBTH2ACD is designed for redundancy and typically requires three PDIO packs for Triple Modular Redundant (TMR) configurations.

What wetting voltages are supported?

The board supports nominal external wetting voltages of 24 V DC, 48 V DC, or 125 V DC.