Description
🔹 Product Description
The General Electric IS400TDBTH6A, with the extended assembly identification IS400TDBTH6AEF, is a Discrete I/O Terminal Board associated with the GE Mark VIe control platform. The TDBTH6A provides the field-wiring interface for discrete input and output signals and is designed for use with compatible Mark VIe distributed I/O architecture. The TDBT family supports 24 group-isolated contact inputs with external wetting voltages and provides 12 Form-C relay outputs. It also provides multiple I/O pack connection points for communication with the controller network. The H6A configuration should be matched with the complete assembly number and the existing system architecture before replacement.
📋 Product Datasheet
| Parameter | Value |
|---|---|
| Brand | General Electric (GE) |
| Model | IS400TDBTH6A |
| Extended Model | IS400TDBTH6AEF |
| Series | Mark VIe |
| Product Name | Discrete I/O Terminal Board |
| Place of Manufacture | United States |
| Product Status | New Surplus / Factory Stock |
| Dimensions | Approx. 16 × 16 × 12 cm |
| Weight | Approx. 0.8 kg |
| Power / Signal Interface | 24, 48, or 125 VDC contact input wetting; relay output interface |
| Discontinued | Legacy Mark VIe hardware; verify system compatibility |
⚙️ Key Features
• Designed for GE Mark VIe distributed I/O systems
• Supports discrete contact input and relay output functions
• Provides 24 group-isolated contact inputs
• Supports nominal 24, 48, or 125 VDC external wetting voltage
• Provides 12 Form-C relay outputs
• Includes three I/O pack connection points for applicable Mark VIe architecture
• Designed for DIN-rail or flat mounting
• Includes input noise suppression for surge and high-frequency interference
• Compatible with appropriate Mark VIe discrete I/O packs and control architecture
• H6A configuration should be verified against the complete system part number before replacement
❓ Common Questions & Answers
Q: What is the IS400TDBTH6A?
A: It is a GE Mark VIe Discrete I/O Terminal Board used to provide field-wiring interfaces for discrete input and output signals.
Q: What is the full assembly number?
A: The base model is IS400TDBTH6A, while IS400TDBTH6AEF is the extended ordering or assembly identification associated with the listed board.
Q: How many discrete inputs are supported?
A: The TDBT terminal-board design supports 24 group-isolated contact inputs.
Q: What input voltages are supported?
A: The TDBT architecture accepts externally supplied nominal 24, 48, or 125 VDC contact-input wetting voltage.
Q: How many relay outputs are available?
A: The TDBT provides 12 Form-C relay outputs.
Q: What is the function of the terminal board?
A: It provides the field-side connection point between discrete field devices and compatible Mark VIe I/O packs, supporting signal termination and relay interfacing.
Q: Does the board communicate directly with the controller?
A: The terminal board provides connection points for compatible I/O packs. The I/O packs communicate with Mark VIe controllers over the I/O Ethernet architecture.
Q: Is IS400TDBTH6A the same as IS400TDBTH6AEF?
A: IS400TDBTH6A is the base model designation, while IS400TDBTH6AEF identifies a specific ordering/assembly configuration. The complete part number should be verified before replacement.
Q: Can any Mark VIe discrete I/O pack be installed with this board?
A: Compatibility depends on the terminal-board type, I/O pack function, system architecture, and configuration. The complete Mark VIe hardware arrangement should be checked before installation.
Q: What should be checked before installation?
A: Verify the complete part number, field wiring, input wetting voltage, relay requirements, compatible I/O pack, controller architecture, and system documentation before energizing the equipment.
⭐ Recommended GE Models
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- IS400TDBTH2A — Mark VIe Discrete I/O Terminal Board
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- IS400TDBTH4A — Mark VIe Discrete I/O Terminal Board
- IS400TDBTH5A — Mark VIe Discrete I/O Terminal Board
- IS400TDBTH6A — Mark VIe Discrete I/O Terminal Board
- IS400TDBTH6AEF — Discrete I/O Terminal Board Assembly
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