Description
The GE General Electric IS200TDBSH2A / IS200TDBSH2ACC is a TDBS Simplex Discrete Input/Output Terminal Board for the GE Mark VIe control system. It provides the field termination interface for 24 group-isolated discrete contact inputs and 12 Form-C relay outputs and is designed to work with the compatible PDIO I/O pack. The H2A version uses a nominal 24 VDC floating contact-wetting supply, with a documented operating range of approximately 16–32 VDC. The board supports DIN-rail or flat mounting and uses pluggable terminal blocks for field wiring. Optional WROB, WROF, and WROG boards can extend relay power distribution, fusing, and diagnostic functions. The supplied eBay listing identifies the item as Used and notes that it has been cleaned and tested.
📋 Product Datasheet
| Specification | Details |
|---|---|
| Brand | General Electric (GE) |
| Model | IS200TDBSH2A |
| Full Assembly Number | IS200TDBSH2ACC |
| Series | Mark VIe |
| Product Name | Discrete Input/Output Terminal Board |
| Functional Designation | TDBS |
| Board Type | Simplex Discrete I/O Terminal Board |
| Contact Inputs | 24 group-isolated discrete inputs |
| Relay Outputs | 12 Form-C relay outputs |
| Contact Wetting | Nominal 24 VDC, floating |
| Wetting Voltage Range | Approx. 16–32 VDC |
| Compatible I/O Pack | PDIO |
| Terminal Blocks | Pluggable |
| Mounting | DIN-rail or flat mounting |
| Hardware Filter | Approx. 4 ms input filtering |
| Option Boards | WROB, WROF, WROG |
| Related Manual | GEH-6721 |
| Condition | Used |
| Seller Condition Note | Cleaned and Tested |
| Product Status | Mark VIe Replacement / Service Spare |
| Dimensions | Verify from physical unit |
| Weight | Verify from physical unit |
⚙️ Main Functions
• Provides field termination for 24 discrete contact inputs.
• Provides 12 Form-C relay outputs for compatible discrete control applications.
• Uses a simplex architecture with a compatible PDIO I/O pack.
• Supports a nominal 24 VDC floating contact-wetting supply for the H2A version.
• Provides input noise suppression and hardware filtering for discrete contact signals.
• Supports DIN-rail or flat mounting within the applicable Mark VIe cabinet configuration.
• Accepts optional WROB, WROF, and WROG boards for different relay power, fusing, and diagnostic arrangements.
• Provides pluggable terminal connections for field wiring.
❓ Q&A
Q: What is the exact model number?
A: The primary model is IS200TDBSH2A, with IS200TDBSH2ACC shown as the associated assembly designation.
Q: What is the product name?
A: It is a GE Mark VIe TDBS Simplex Discrete Input/Output Terminal Board.
Q: How many contact inputs are provided?
A: The TDBSH2A configuration provides 24 group-isolated discrete contact inputs.
Q: How many relay outputs are available?
A: The TDBS terminal board provides 12 Form-C relay outputs.
Q: What is the H2A wetting-voltage configuration?
A: H2A is the nominal 24 VDC floating version, with the documented range approximately 16–32 VDC.
Q: Which I/O pack is used with this board?
A: The TDBS is designed to work with the GE PDIO I/O pack.
Q: Can optional boards be installed?
A: Yes. The TDBS family supports WROB, WROF, and WROG option boards for expanded relay power distribution, fusing, and related diagnostic functions.
Q: Is this board simplex or TMR?
A: IS200TDBSH2A is the simplex TDBS configuration. It should not be substituted for a TMR terminal board without confirming the system design.
Q: What condition is the listed item?
A: The supplied eBay listing identifies it as Used and states that it is cleaned and tested.
Q: What should be checked before installation?
A: Verify the complete IS200TDBSH2A / IS200TDBSH2ACC number, hardware revision, compatible PDIO pack, contact-wetting voltage, terminal assignment, option-board configuration, and Mark VIe cabinet documentation.
⭐ Recommended GE Mark VIe Models
- GE IS220PDIOH1A — PDIO Discrete I/O Pack
- GE IS220PDIOH1B — PDIO Discrete I/O Pack
- GE IS200TDBSH2A — TDBS Simplex Discrete I/O Terminal Board
- GE IS200TDBSH4A — TDBS 48 VDC Discrete I/O Terminal Board
- GE IS200TDBSH6A — TDBS 125 VDC Discrete I/O Terminal Board
- GE IS200TDBTH2A — TDBT TMR Discrete I/O Terminal Board
- GE IS200WROBH1A — TDBS Relay Option Board
- GE IS200WROFH1A — Relay Fusing Option Board
- GE IS200WROGH1A — Relay Power Distribution Option Board
- GE IS200TBCIH3C — Contact Input Terminal Board
- GE IS200TDBTH8A — TMR Contact I/O Terminal Board
- GE IS200STCIH6A — DIN Rail Contact Input Terminal Board
- GE IS200TBAIH1C — Analog I/O Terminal Board
- GE IS200STAIH2A — Analog I/O Terminal Board
- GE IS200TRTDH1C — RTD Input Terminal Board
