Products Description
GE IS230SNIDH1A Mark VIe Digital Input Terminal Board in stock
GE IS230SNIDH1A is a 16-channel smart distributed digital input terminal board for GE Mark VIe turbine control system. It receives dry contact discrete signals from field limit switches, relay contacts and emergency stop buttons, serving as the field wiring interface for SNID digital input I/O pack.

This board features galvanic channel isolation and built-in signal filtering for strong anti-interference performance. It supports hot-swap maintenance and works with SNID I/O pack via rack backplane. It is discontinued legacy spare widely used for gas and steam turbine control system maintenance in power and oil & gas industries.
Main Specifications
| No. | Item | Parameter |
|---|---|---|
| 1 | Brand | GE |
| 2 | Model | IS230SNIDH1A |
| 3 | Module Type | Smart Distributed Digital Input Terminal Board |
| 4 | Applicable System | GE Mark VIe Speedtronic Turbine DCS |
| 5 | Channel Quantity | 16 digital input channels |
| 6 | Input Signal | Dry contact discrete signal |
| 7 | Isolation | Galvanic channel isolation |
| 8 | Feature | Support hot swap during operation |
| 9 | Operation Temperature | -30℃ ~ +65℃ |
| 10 | Status | Discontinued legacy terminal board spare part |
Core Functions
| No. | Function Description |
|---|---|
| 1 | Field wiring terminal interface for collecting dry contact signals from switches and relay auxiliary contacts. |
| 2 | Channel galvanic isolation and signal filtering to suppress electromagnetic interference on site. |
| 3 | Transmit conditioned digital signals to matched SNID I/O pack through rack backplane bus. |
| 4 | Onboard LED indicators to display each channel signal status and power condition. |
| 5 | Support hot-swap replacement without shutting down the whole turbine control rack. |
Application Scenarios
| No. | Application |
|---|---|
| 1 | GE Mark VIe gas turbine and steam turbine control & interlock system in power plants |
| 2 | Oil & gas compressor turbine unit discrete signal acquisition and safety interlock system |
| 3 | Power plant auxiliary equipment status monitoring and sequence control system |
| 4 | Legacy Mark VIe turbine control cabinet spare replacement and field maintenance |
FAQ
| No. | Question & Answer |
|---|---|
| 1 | Q: What is GE IS230SNIDH1A? A: It is 16-channel digital input terminal board for Mark VIe, used for field dry contact signal wiring and conditioning. |
| 2 | Q: What I/O pack does it match with? A: It works with SNID smart distributed digital input I/O pack of Mark VIe control system. |
| 3 | Q: What is hot swap function? A: Users can replace the board online while the control rack keeps running, without system shutdown. |