Modicon DEP 6728-042.272572 209 115VAC 8-Point Discrete Input Module

The Modicon DEP 209 (6728-042.272572) is a discrete input module designed for reliable 115 VAC signal acquisition in legacy Modicon 984 PLC systems. Built with optocoupler-based isolation, it ensures clean and accurate signal transfer from field devices while protecting the PLC’s internal electronics.

Why It Helps

This module enables dependable interface capability for 115 VAC devices such as switches and pushbuttons. Its isolated input circuits improve noise immunity and enhance system longevity, making it a practical solution for facilities still operating Modicon 984 control architectures.

Key Highlights

• 115 VAC Discrete Signal Input: Handles standard industrial ON/OFF field signals for dependable PLC communication.

• Optocoupler Isolation: Each channel is electrically isolated, improving protection against voltage spikes and electrical interference.

• 8 Independent Input Points: Supports multiple field devices within a single module, optimizing rack utilization.

• Legacy System Integration: Designed specifically for older Modicon 984 PLC environments, ensuring direct drop-in compatibility.

• Multiple Part Number Equivalents: Identified as DEP 209, AS-BDEP-209, and 6728-042.272572 for easier sourcing in surplus channels.

System Compatibility

The DEP 209 integrates with Modicon 984 series PLCs and certain Modicon Compact systems, offering backward-compatible operation in aging industrial automation installations.

Applications

Ideal for industrial automation and motion control systems that require monitoring of 115 VAC field devices within Modicon 984-based architectures. Its isolation and reliability make it a valuable component for sustaining legacy systems still in active use.