Product Overview
The GE IS420YDIAS1B is a Discrete Contact I/O Module from the Mark VIeS series, designed for GE Distributed Control Systems. It provides a robust electrical interface between one or two I/O Ethernet networks and a discrete input terminal board, ensuring reliable signal acquisition in demanding industrial environments.
Technical Specifications
| Parameter |
Value |
| Part Number |
IS420YDIAS1B |
| Manufacturer |
General Electric |
| Series |
Mark VIeS |
| Function |
Discrete Contact I/O Module |
| Number of Relay Channels |
24 |
| Input Isolation |
1500 V |
| Input Filter AC Voltage Rejection |
125 V DC |
| Technology |
Surface Mount |
| Operating Temperature |
-40 to 70°C |
| Size |
8.26 high x 4.19 wide x 12.1 cm |
| Repair Time |
3-5 Days |
| Availability |
In Stock |
| Country of Manufacture |
United States (USA) |
| Manual |
GEH-6855 |
Key Features
- Accepts up to 24 contact inputs with terminal board-specific feedback signals.
- Supports three different voltage levels for flexible integration.
- Dual RJ-45 Ethernet connectors and a three-pin power input for system connectivity.
- Visual diagnostics via indicator LEDs for quick status checks.
- Each input is isolated from control logic through opto-couplers and an isolated power supply.
- Under-voltage detection annunciates when contact wetting voltage drops below 40% of nominal.
- Self-test every four seconds checks opto-coupler response; non-responding inputs are alarmed.
Applications
The GE IS420YDIAS1B is ideal for use in turbine control, power generation, and industrial process automation where reliable discrete input monitoring is critical. Its 1500 V isolation and wide operating temperature range make it suitable for harsh environments, ensuring dependable performance in both simplex and TMR configurations.
Installation & Setup
Mount the IS420YDIAS1B on a DIN rail and connect the DC-37 pin connector to the associated terminal board. Use the dual RJ-45 connectors to link to the I/O Ethernet network. Ensure the contact wetting voltage is correctly scaled to achieve a 50% input threshold for optimal performance.
Maintenance & Reliability
With a wide operating temperature range and robust isolation, the IS420YDIAS1B minimizes downtime. Routine checks of the indicator LEDs and periodic verification of input thresholds are recommended to maintain system integrity.
Compatibility & Integration
This module interfaces with Mark VIeS safety control logic and supports both Simplex and TMR configurations. It works with multiple DIN-rail mounted terminal boards, including STCI and TBCI, to match your redundancy and voltage requirements.
Buying Guide
Before purchasing, verify your terminal board compatibility and required voltage levels. PLC Source PRO offers the GE IS420YDIAS1B in stock with a 3-5 day repair service, ensuring minimal disruption to your operations.