The GE IS420YDIAS1B is a Discrete Contact Input I/O Module engineered by General Electric (GE) as part of the Mark VIe and Mark VIeS distributed control system lineup. This module serves as a crucial interface between field discrete signals (e.g., switches, contact sensors) and the central control logic, enabling clean binary signal acquisition and real‑time monitoring. Built for industrial environments, it enhances the system’s ability to process large numbers of on/off inputs while providing diagnostic feedback and robust communication over Ethernet networks.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | GE (General Electric) |
| Model | IS420YDIAS1B |
| Module Type | Discrete Contact Input I/O Pack |
| System Compatibility | GE Mark VIe / Mark VIeS |
| Input Channels | Up to 24 discrete contact inputs |
| Signal Type | Binary contact (on/off) |
| Communication Interfaces | Dual Ethernet ports (RJ45) |
| Power Supply | 24–28 V DC |
| Power Consumption (max) | ~6.8 W |
| Operating Temperature | ‑40 °C to +70 °C |
| Construction | Aluminum casing with LED diagnostics |
| Mounting Style | Direct terminal board mount |
| Dimensions (approx.) | 121 mm × 42 mm × 83 mm (based on equivalent I/O packs) |
| Weight (approx.) | 0.5 kg – 0.6 kg (varies by variant) |
Discrete I/O packs are compact and designed for panel or terminal board integration within Mark VIe/VIeS cabinets.
Recommended Related Models
- GE IS420YDOAS1B – Discrete output I/O pack for switching and actuator control
- GE IS420YAICS1B – Analog I/O pack for continuous signal acquisition
- GE IS420PPNGH1A – PROFINET gateway module for network integration
- GE IS420ESWBH2A – 16‑port industrial Ethernet IONet switch
These modules complement each other to form a full I/O subsystem, supporting mixed signal types and network connectivity.
Popular Allen Bradley Models
For reference in Rockwell Automation environments, the following are functionally similar:
- Allen‑Bradley 1756‑IB16 – Digital input module
- Allen‑Bradley 1756‑OB16E – Digital output module
- Allen‑Bradley 1734‑IB8 – CompactLogix discrete input module
- Allen‑Bradley 1756‑EN2T – EtherNet/IP communication interface
These modules also interface discrete field signals with PLC or controller logic on other industrial platforms.
