Description
Product Description
The IS230TRTDH1D is a General Electric Mark VI IS230-series RTD Input Terminal Board designed for temperature measurement applications in compatible GE turbine control systems. The TRTDH1D is the simplex, normal-scan version of the TRTD terminal-board family and interfaces with PRTD I/O packs in Mark VIe configurations. It accepts up to 16 three-wire RTD inputs through two barrier-type terminal blocks and provides noise suppression for the incoming temperature signals. The board uses two DC-37 connectors with latching fasteners for connection to the associated I/O processor or PRTD architecture. The supplied item is identified as OPEN BOX, making complete part-number and hardware-revision verification important before installation.
Product Datasheet
| Specification | Details |
|---|---|
| Brand | General Electric (GE) |
| Model | IS230TRTDH1D |
| Functional Acronym | TRTD |
| Product Name | RTD Input Terminal Board |
| Product Type | RTD Temperature Input Terminal Board |
| Series | Mark VI / Mark VIe |
| Board Version | H1D |
| Control Mode | Simplex |
| RTD Inputs | 16 × three-wire RTD inputs |
| Terminal Blocks | 2 barrier-type terminal blocks |
| Terminal Capacity | 24 terminals per block |
| I/O Interface | PRTD I/O Pack / system-specific I/O processor |
| Connectors | 2 × DC-37 connectors |
| Connector Labels | JA1 and JB1 |
| Scan Mode | Normal Scan |
| Noise Suppression | Integrated |
| Hardware Configuration | No user-configurable jumpers or hardware settings |
| PCB Protection | Conformal coating |
| Condition | New – Open Box |
| Product Status | Legacy / Mark VI Series |
| Compatible Mark VIe Board | IS200TRTDH1D |
Functional Features
- Provides RTD signal termination for GE Mark VI and Mark VIe turbine control architectures.
- Supports up to 16 three-wire RTD inputs.
- Two terminal blocks divide the RTD channels into two groups of eight.
- Each terminal block provides 24 connection points for RTD excitation, signal, and return wiring.
- Two DC-37 connectors provide system-side connections.
- The H1D version is designed for PRTD I/O packs and simplex operation.
- Integrated noise-suppression circuitry helps reduce high-frequency interference on RTD signals.
- Barrier-type terminal blocks can be unplugged for maintenance.
- An onboard identification device stores board information such as board type, revision, serial number, and connector location.
- No jumper or hardware configuration settings are required on the terminal board.
- The IS230 special assembly uses a metal mounting structure and conformally coated PCB.
FAQ
Q1: What is the IS230TRTDH1D used for?
It is an RTD Input Terminal Board used to connect three-wire resistance temperature detectors to compatible GE turbine control systems.
Q2: How many RTD inputs does the board support?
The TRTDH1D supports 16 RTD inputs, arranged as two groups of eight channels.
Q3: Is the IS230TRTDH1D compatible with PRTD I/O packs?
Yes. The H1D version is specifically associated with PRTD I/O packs in Mark VIe simplex configurations. Two PRTD packs can provide the interface for the 16 RTD channels.
Q4: What is the difference between TRTDH1D and TRTDH2D?
Both are simplex TRTD versions for PRTD applications, but H1D is the normal-scan version while H2D is designed for fast-scan operation.
Q5: Does the terminal board require jumper settings?
No. The documented TRTDH1D terminal board does not use configurable jumpers or hardware settings.
Troubleshooting & Safety
Before installation, verify the complete IS230TRTDH1D part number and compare the connector arrangement, terminal labeling, and revision with the original board. Confirm that each three-wire RTD is connected to the correct excitation, signal, and return terminals. Inspect the terminal blocks and DC-37 connectors for loose contacts, corrosion, or mechanical damage. Keep RTD wiring properly shielded and routed away from high-voltage and high-noise circuits. Power down and isolate the associated turbine-control equipment before removing or installing the terminal board. After installation, verify RTD resistance values, channel diagnostics, I/O-pack communication, and temperature readings before returning the system to service.
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