The GE IS230SNIDH1A is a high-density Discrete Input (SNID) I/O pack designed for the Mark VI Distributed Control System (DCS). This module is engineered to monitor and process critical field-level digital signals—such as limit switch status, push-button commands, and relay feedback—converting them into digital format for consumption by the Mark VI controller. The “SNID” designation specifically denotes its function as a high-density input pack within the Mark VI architecture.

⚙️ Technical Specifications

• Model Number: IS230SNIDH1A

• Brand: General Electric (GE)

• Series: Mark VI

• Module Type: Discrete Input Pack (SNID)

• 📏 Physical Dimensions: 13.5 cm x 11.5 cm x 5.0 cm

• ⚖️ Net Weight: 0.40 kg

• 🌍 Country of Origin: United States

🛠️ Key Capabilities

• High-Density Signal Monitoring: Provides the ability to interface a large number of discrete signals through a single I/O pack, optimizing rack space and simplifying wiring.

• Real-Time Data Acquisition: Engineered for rapid scanning and signal processing, ensuring the controller receives accurate, time-sensitive status updates from field devices.

• Fault Detection: Includes internal diagnostic reporting to alert the system of failed inputs, wiring breaks, or signal discrepancies.

• TMR Compatibility: Fully supports Triple Modular Redundant (TMR) configurations, which are required for high-availability applications in power generation and turbine control.

📋 Recommended Modules for Mark VI Architecture

To maintain the high reliability of your Mark VI control cabinets, the following I/O packs and terminal boards are often paired with the IS230SNIDH1A:

1. IS200TBCIH1C (Discrete Input Terminal Board)

2. IS200TBAIH1C (Analog Input Terminal Board)

3. IS200TRLYH1B (Relay Output Terminal Board)

4. IS200WROBH1A (Relay Output Pack)

5. IS200PPROH1A (Primary Protection Pack)

6. IS215ACLEH1C (Application Control Layer Module)

7. IS420ESWBH3A (Ethernet Switch)

8. IS200AEADH1A (Analog/Digital I/O Module)