Product Overview
The Schneider Electric 140DAI34000C is a discrete input module designed for the Modicon Quantum series. With 16 input channels operating at 24 V AC, this module reliably acquires discrete signals from sensors, switches, and other field devices. Its compact standard format integrates seamlessly into existing Quantum racks, making it a practical choice for industrial control systems that require robust signal conditioning.
Technical Specifications Breakdown
Key parameters for the 140DAI34000C are listed below for quick reference:
| Feature | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Product Type | Discrete Input Module |
| Product Line | Modicon Quantum |
| Part Number | 140DAI34000C |
| Input Channels | 16 |
| Input Voltage | 24 V AC |
| Addressing Requirement | 1 Input Word |
| Input Current | 10.7 to 12 mA |
| Max Leakage Current | 1.9 mA |
| Bus Current Requirement | 180 mA |
| Max Power Dissipation | 5.5 W |
| Marking | CE |
| Format | Standard |
| Ambient Temperature | 0 to 60 °C |
| Standards | UL 508, CSA |
Industry Applications
This module excels in manufacturing lines where 24 V AC discrete sensors are common. For example, in packaging machinery, it captures limit switch and photoelectric sensor states to coordinate conveyor sequencing. In HVAC systems, it monitors pressure switches and valve position feedback. The 10.7 to 12 mA input current ensures consistent detection even with long cable runs, while the 1.9 mA max leakage current minimizes false triggers in high-impedance circuits.
Installation & Setup Guidance
Mount the module in any standard Quantum backplane slot. Ensure the bus current requirement of 180 mA is within your rack's power budget. Connect 24 V AC field wiring to the terminal block, observing polarity where applicable. Address the module using one input word in your control logic. Verify that the ambient temperature stays between 0 and 60 °C for reliable operation.
Maintenance & Reliability
Periodically inspect terminal connections for tightness and signs of corrosion. Keep the module free of dust and moisture. The 5.5 W power dissipation is low, reducing thermal stress in crowded cabinets. No internal adjustments are required; the module is factory-calibrated.
Compatibility & Integration
The 140DAI34000C is fully compatible with Modicon Quantum backplanes and processors. It integrates with Unity Pro and Concept software. The CE marking confirms compliance with European directives, and UL 508 and CSA standards ensure safety for North American installations.
Selection Guide & Purchasing Advice
When selecting a discrete input module for a 24 V AC system, the 140DAI34000C offers proven reliability. SpareTechPLC stocks this module and can advise on lifecycle status and availability. Contact our team to confirm stock and lead times before ordering.
Troubleshooting & Common Issues
If inputs fail to register, check the 24 V AC supply voltage and verify that the bus current draw does not exceed the rack's capacity. For intermittent signals, inspect for leakage current above 1.9 mA from connected devices. Replace the module if power dissipation exceeds 5.5 W or if physical damage is visible.
