Description
Product Overview
The IS420YDIAS1B Discrete Input Module from GE provides a reliable interface between discrete contact sensors and the Mark VIeS safety control system. It supports up to 24 contact inputs and offers compatibility with both Simplex and Triple Modular Redundant (TMR) configurations. This module ensures accurate signal acquisition and system integrity in critical industrial environments.
Key Features
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Accepts 24 discrete contact inputs
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Supports three voltage levels including 125 Vdc
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Dual RJ-45 Ethernet ports for primary and redundant communication
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DC-37 connector for direct terminal board connection
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LED indicators for real-time diagnostics
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Compatible with STCI and TBCI terminal boards
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Suitable for Simplex, Dual, and TMR configurations
Technical Specifications
| Specification |
Details |
| Manufacturer |
GE |
| Model Number |
IS420YDIAS1B |
| Series |
Mark VIeS |
| Input Channels |
24 contact inputs |
| Voltage Support |
Up to 125 Vdc |
| Technology |
Surface-mount |
| Ambient Temperature Range |
-40 to 70°C (-40 to 158°F) |
| Dimensions |
8.3 cm × 4.2 cm × 12.2 cm |
| Weight |
340 g |
| Power Input |
28 V DC via 3-pin connector |
| Primary Ethernet Port |
ENET1 (RJ-45) |
| Secondary Ethernet Port |
ENET2 (RJ-45) |
| Signal Input Connector |
DC-37 pin |
Application & Compatibility
The IS420YDIAS1B module is ideal for safety-critical applications in power generation, process automation, and industrial control. It integrates with STCI and TBCI terminal boards, offering flexibility in redundancy and SIL-level configurations. This module supports both Simplex and TMR setups, enabling 2-out-of-3 voting logic for enhanced reliability.
