140DAI44000 Discrete Input Module Schneider Electric

Schneider Electric 140DAI44000 VAC Discrete Input Module

The Schneider Electric 140DAI44000 is a 16-channel 48V AC input module for Modicon Quantum systems. Designed for medium-voltage industrial control circuits, it provides reliable signal monitoring with high isolation and fast response times for demanding automation applications.

Key Specifications

• Model: 140DAI44000
• Inputs: 16 discrete AC channels
• Voltage: 48 V AC control circuits
• Reliability: 155,000 hours MTBF
• Impedance: ~2400 Ohm (capacitive)
• Startup Time: ≤ 150 ms to bus-ready
• Wiring: 0.2-2.5 mm² (24-12 AWG)
• Torque: 0.5 N·m terminal specification
• Isolation: High group-to-group and group-to-bus
• Indicators: 16 individual front LEDs

Frequently Asked Questions

• Q: What makes 48V AC inputs advantageous?
  A: 48V AC systems offer better noise immunity than lower voltages while maintaining safety benefits, making them ideal for industrial environments with electrical interference.
• Q: How reliable is this module in continuous operation?
  A> With a 155,000-hour MTBF (over 17.5 years), it provides exceptional long-term reliability for critical monitoring applications.
• Q: What is the input impedance and why does it matter?
  A> The ~2400 Ohm capacitive impedance at line frequency ensures minimal loading on connected devices while providing stable signal detection even with long cable runs.
• Q: How quickly does the module become operational?
  A> The module reaches bus-ready status within 150 milliseconds after power-up, ensuring minimal impact on overall system startup time.
• Q: What types of applications typically use 48V AC inputs?
  A> Common applications include machine tool controls, conveyor systems, packaging equipment, and other industrial machinery where improved noise immunity is required.

Applications & Benefits

• Noisy Environments: Enhanced signal integrity in electrically noisy plants
• Machine Safety: Monitoring of safety relays and interlock circuits
• Process Control: Reliable detection of limit switches and sensors
• Easy Maintenance: Clear per-channel LED indication simplifies troubleshooting
• Industrial Durability: High isolation ratings protect against voltage transients

Ordering & Support

• Package: One 140DAI44000 module with documentation
• Shipping: Worldwide delivery via FedEx, UPS, or DHL
• Compatibility: Full Modicon Quantum platform support
• Documentation: Complete installation and wiring specifications

The Schneider Electric 140DAI44000 provides robust 48V AC input monitoring for industrial automation. Its combination of medium-voltage operation, high reliability, and clear diagnostics makes it ideal for applications requiring improved noise immunity and long-term performance.

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