Product Overview
The Schneider Electric 140DDI67300C is a discrete input module from the Modicon Quantum automation platform. Designed for reliable signal acquisition in demanding industrial environments, this module provides 24 input channels with a nominal input voltage of 125 V DC. Its fast 0.7 ms response time ensures efficient processing of discrete signals, making it suitable for applications requiring quick state detection.

Technical Specifications Breakdown
Key parameters for the 140DDI67300C are listed below for quick reference:
| Feature | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Product Type | Discrete input module |
| Product Line | Modicon Quantum |
| Part Number | 140DDI67300C |
| Input Channels | 24 |
| Input Voltage Range | 88 to 150 V |
| Nominal Input Voltage | 125 V DC |
| Addressing Requirement | 2 input words |
| Response Time | 0.7 ms |
| Bus Current Requirement | 200 mA |
| Logic Input | Positive (sink) |
| Marking | CE |
| Format | Standard |
| Ambient Temperature | 0 to 60 °C |
| Standards | UL 508, CSA |
| Protective Treatment | Conformal coating |
Industry Applications
This discrete input module excels in applications where reliable 125 V DC signal detection is critical. Typical use cases include monitoring limit switches, push buttons, and proximity sensors in manufacturing lines. The 0.7 ms response time enables rapid fault detection in conveyor systems, reducing downtime. With conformal coating protection, it is well-suited for environments with humidity or mild contaminants, such as food processing or automotive assembly.

Installation & Setup Guidance
When integrating the 140DDI67300C into a Modicon Quantum rack, ensure the bus current requirement of 200 mA is within the power supply capacity. The module requires 2 input words for addressing. Use positive (sink) logic wiring for the 24 input channels. Verify that the input voltage stays within 88 to 150 V DC to avoid damage. Operate the module within 0 to 60 °C ambient temperature for optimal performance.
Maintenance & Reliability
The conformal coating on this module provides enhanced resistance to moisture and dust. Periodically inspect the module for signs of environmental stress and ensure the rack's cooling airflow is unobstructed. The module's solid-state design requires minimal maintenance beyond routine visual checks. For storage, keep within -40 to 85 °C to preserve component integrity.
Compatibility & Integration
This module is designed for the Modicon Quantum automation platform and integrates seamlessly with other Quantum I/O modules and controllers. It complies with UL 508 and CSA standards, ensuring broad acceptance in North American industrial installations. The CE marking confirms conformity with European health, safety, and environmental requirements.
Selection Guide & Purchasing Advice
When selecting the 140DDI67300C, confirm that your application requires 24 discrete inputs at 125 V DC nominal with positive sink logic. SpareTechPLC offers this module with detailed specifications and support to ensure correct integration. Please verify current lifecycle status and availability with SpareTechPLC before ordering.
Troubleshooting & Common Issues
If the module's Active LED is off, check the bus connection and rack power. If the Fault LED illuminates, verify that the input voltage is within 88 to 150 V and that wiring is correct for positive sink logic. For erratic input readings, inspect for loose connections or environmental interference. Always refer to the Modicon Quantum hardware manual for detailed diagnostics.