Schneider 140CRA21120C Module | Distributed I/O

The Schneider Electric 140CRA21120C is a DIO drop interface for the Modicon Quantum automation platform. This module provides a critical link between the Quantum CPU and distributed I/O stations. It ensures reliable and redundant data communication across the automation network.

Core Product Specifications

• Brand & Model: Schneider Electric 140CRA21120C
• Product Type: DIO Drop Interface (Distributed I/O)
• Supply Voltage: 24 VDC nominal (20 to 30 V range).
• Port Configuration: 2 redundant ports for communication reliability.
• Output Power: 5.1V DC at 3A for connected devices.
• Protection: Integrated short-circuit and overvoltage protection.

Electrical & Performance Data

• Inrush Current: Handles up to 30A for stable startup.
• Power Dissipation: 11 Watts during normal operation.
• Fuse Requirement: Requires an external 2.5A fuse for protection.
• Buffer Time: Maximum 1ms for power hold-up.
• Operates with a typical supply current of 1.6A at 24V.

Environmental & Physical Design

• Operating Temperature: 32°F to 140°F (0°C to 60°C).
• Humidity Rating: Up to 95% non-condensing.
• Altitude: Suitable for installations up to 5000 meters.
• Protection: Features conformal coating (Humiseal 1A33).
• EMC Resilience: Resistant to electrostatic discharge and electromagnetic fields.

Compatibility & Integration

• Platform: Designed for the Modicon Quantum series.
• I/O Capacity: Supports 30 input words and 32 output words.
• Backplane Compatibility: Works with 2, 3, 4, 6, 10, and 16-slot racks.
• Connection: Uses a 7-pole terminal block for secure wiring.
• Includes comprehensive startup and runtime diagnostic checks.

Packaging & Shipping

• Package Includes: One (1) 140CRA21120C interface module.
• Package Dimensions: 12.4" L x 6.5" W x 2.0" H (31.5 x 16.5 x 5.0 cm).
• Unit Weight: 24.2 oz (685.0 g).
• Shipping: Fast delivery available via FedEx, UPS, or DHL.
• Certifications: UL 508, CSA, DNV, GOST, ensuring global compliance.

Frequently Asked Questions (FAQ)

What is the main function of the 140CRA21120C module?

This module acts as a drop interface in a Modicon Quantum distributed I/O network. It connects the main Quantum CPU to remote I/O drops, managing data exchange.

What does "redundant ports" mean for this device?

The module has two separate communication ports. If one port or cable fails, the system automatically switches to the second one, maintaining network connection without interruption.

What power supply do I need for this interface?

You need a 24V DC power source. The module accepts a range from 20V to 30V DC to accommodate typical line fluctuations in industrial settings.

Can this module be used in harsh environments?

Yes, it is designed for industrial use. It has conformal coating, a wide temperature rating, and high humidity tolerance, making it suitable for demanding locations.

Which backplane racks is the 140CRA21120C compatible with?

It is compatible with standard Modicon Quantum backplanes of 2, 3, 4, 6, 10, and 16 slots. Ensure you use the correct Quantum rack for installation.

Does it require any external fusing?

Yes, you must protect the supply line with a 2.5A fuse. This protects the module and the overall system from potential electrical faults.

How does it handle power interruptions?

The module has a built-in buffer that can maintain operation for up to 1 millisecond during a brief power dip, helping to prevent data loss.