Schneider Electric 140DAI54300C Discrete Input Module

Direct High-Voltage AC Input for Quantum PLCs

Interface directly with line-voltage control circuits using the Schneider Electric 140DAI54300C discrete input module. This Modicon Quantum module provides 16 channels for monitoring 115V AC signals, eliminating the need for external interfacing relays. Its conformal coating and industrial certifications make it a reliable choice for harsh environments.

Core Technical Specifications

• Brand & Manufacturer: Schneider Electric
• Product Line & Model: Modicon Quantum / 140DAI54300C
• Type: Discrete (Digital) Input Module
• Input Channels: 16 Channels
• Input Signal Type: 115 Volts AC
• Addressing: Requires 1 Input Word
• Input Current per Point: 11.1 to 13.2 mA
• Max Leakage Current: 2.1 mA
• Bus Current Requirement: 180 mA
• Max Power Dissipation: 5.5 W
• Operating Temperature: 0°C to 60°C
• Protection: Conformal Coating

Certifications and Physical Details

• Safety Standards: UL 508, CSA
• Compliance Marking: CE
• Module Format: Standard Quantum Module
• EAN Code: 3595861135963
• Approx. Weight: 0.3 kg

Key Features and Benefits

• Direct 115V AC Interface: Connects directly to common line-voltage control devices (e.g., switches, contractors) without intermediate isolation relays, simplifying design and saving panel space.
• Enhanced Environmental Protection: Conformal coating guards the module's circuitry against moisture, dust, and corrosive atmospheres, increasing reliability in demanding conditions.
• Industrial Safety Compliance: Meets UL 508 and CSA standards, ensuring the module is approved for use in industrial control panels in North America and internationally.
• Efficient System Integration: Single-word addressing and a standard Quantum footprint allow for quick and straightforward installation and configuration.
• Reliable Signal Detection: Designed with controlled leakage current (2.1 mA max) to ensure accurate ON/OFF state recognition even in electrically noisy environments.
• Optimized Power Usage: Moderate bus current draw (180mA) and power dissipation (5.5W) minimize the load on the system power supply.

Installation and Wiring Guidelines

• Connect field devices operating at a nominal 115V AC directly to the module's terminals. Ensure proper isolation and wiring practices for line-voltage circuits.
• Always de-energize the 115V AC circuit before wiring or servicing the module to prevent electric shock.
• Account for the module's 180mA bus current requirement in the total load calculation for the Quantum backplane power supply.
• The conformal coating provides added protection but does not eliminate the need to install the module in a properly rated enclosure.
• Adhere to the specified operating temperature range of 0°C to 60°C to ensure long-term performance and reliability.
• Use the single assigned input word in your PLC logic to monitor the status of all 16 high-voltage input points.

Frequently Asked Questions (FAQ)

• What is the main application for this module?
  The 140DAI54300C is ideal for directly monitoring the status of 115V AC circuits, such as mains-powered indicator lights, manual switches, or the auxiliary contacts of motor contactors and starters.
• Can it be used with 24V DC or 240V AC signals?
  No. This module is designed specifically for 115V AC nominal voltage. Using other voltages can damage the module and create a safety hazard.
• What is the purpose of the conformal coating?
  The coating provides a protective layer on the circuit board, increasing resistance to humidity, condensation, dust, and mild chemical exposure, which is common in industrial settings.
• Does this module provide optical isolation?
  Yes, like most industrial I/O modules, it includes opto-isolation between the field side (115V AC) and the logic side (PLC backplane) for safety and noise immunity.
• Is it safe to wire 115V AC directly to a PLC module?
  Yes, when using the correctly rated module like the 140DAI54300C. It is designed and certified (UL508, CSA) for this purpose. Always follow local electrical codes and safety practices.
• How does this differ from a 24V AC/DC input module?
  It operates at a much higher voltage (115V AC), allowing direct connection to control circuits that don't use a lower control voltage transformer. It typically has more robust isolation and clearance specifications.

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