140CRA21220

The Schneider Electric 140CRA21220 is a rugged digital I/O drop interface designed for the Modicon Quantum programmable logic controller (PLC) platform. As a dual‑redundant port DIO interface, it bridges field‑level discrete signals with the Quantum PLC network, ensuring dependable communication and control. Built with wide‑range 24 V DC power compatibility and robust diagnostics, this module is a reliable choice for complex automation systems where uptime and consistency matter.

Technical Specifications

Parameter	Specification
Product Type	Digital I/O Drop Interface Module
Platform	Modicon Quantum
Number of Ports	2 Redundant Ports
Rated Supply Voltage	24 V DC
Supply Voltage Limits	20–30 V DC
Maximum Supply Current	1.6 A @ 24 V
Inrush Current	30 A @ 24 V
Maximum Buffer Time	≤ 1 ms
Associated Fuse Rating	2.5 A
Output Voltage	5.1 V DC
Nominal Output Current	3 A
Short‑Circuit Protection	Integrated
Output Overvoltage Protection	Integrated
I/O Words	30 Inputs / 32 Outputs
Connection Type	7‑pole Terminal Block
Power Dissipation	Approx. 11 W
Typical Backplane Sizes	2, 3, 4, 6, 10, 16 positions
Operating Temperature	0 °C to 60 °C
Dimensions (H×W×D)	Approx. 155 × 110 × 45 mm (Standard Quantum Module)
Weight	Approx. 0.70 kg

This module supports redundant port architecture for field I/O, enhancing system reliability and flexibility.

Recommended Related Models

140CRA21110C – DIO Drop Interface (Single Port AC)
140CRA21210C – Redundant AC DIO Drop Interface
140NOE21100 – Modbus Communication Module
140CPU31110C – Quantum CPU Processor Module
140XBP01600 – Quantum Backplane Rack

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Application Scenarios

The 140CRA21220 is ideal for field‑level digital interfacing in:

Distributed control systems with redundant I/O requirements
Machine and process automation with discrete signal interfacing
Packaging and material handling control architectures
Large‑scale industrial facilities with complex PLC networks
Legacy Modicon Quantum systems needing robust DIO expansion

Key Advantages

Redundant Port Design: Dual redundant ports offer improved reliability and uptime in distributed I/O configurations.
Wide DC Voltage Compatibility: Designed for standard 24 V DC control power with a broad 20–30 V tolerance.
Built‑In Protection: Integrated short‑circuit and overvoltage protection enhances safety and module longevity.
Comprehensive Diagnostics: Runtime and startup diagnostic checks (RAM, checksum, etc.) help detect issues early.
Flexible Backplane Fit: Compatible with multiple backplane sizes for system scalability.

Technical FAQs

What is the main function of the 140CRA21220?
It’s a digital I/O drop interface that connects field I/O signals with a Modicon Quantum PLC system.
What supply voltage does it require?
The module operates on 24 V DC with a range of 20–30 V.
How many ports does it have?
It features 2 redundant ports for enhanced communication reliability.
What I/O capacity does it support?
It provides 30 digital inputs and 32 digital outputs.
Does it include protection features?
Yes — integrated short‑circuit and overvoltage protection are included.
What is the output rating?
The module outputs 5.1 V DC with a nominal current of 3 A.
What are the physical dimensions?
Approximately 155 × 110 × 45 mm (standard Quantum module form factor).
What is the typical operating temperature range?
0 °C to 60 °C.
Is the module still supported by Schneider?
The Quantum series is discontinued but remains supported through service and spare parts programs into the 2030s.
What makes this module reliable for industrial use?
Its redundant port architecture, built‑in protection, and diagnostic features deliver dependable performance in distributed automation systems.