Schneider 140CRA21120C DIO Drop Interface

The 140CRA21120C serves as a DIO drop interface for Schneider Quantum PLC systems. This module connects remote I/O drops to the main control network. Its rectangular frame measures 166 millimeters in width. The module height reaches 140 millimeters exactly. Depth stays at 115 millimeters. You will find this unit weighs approximately 0.62 kilograms. Therefore, installation requires sliding the unit into a standard Quantum rack slot. Two front-panel RJ45 ports provide primary network connectivity.

Physical Layout and Connectors

The front panel features two shielded RJ45 ports for I/O network connections. A third rotary switch allows manual address selection for the drop. Four status LEDs indicate power, active, fault, and communication conditions. Two rotary switches set the drop number for network identification. Four mounting screws secure the module firmly in the rack.

Technical Specifications

Parameter	Specification
Module Width	166 mm
Module Height	140 mm
Module Depth	115 mm
Unit Weight	0.62 kg
Network Ports	2 x RJ45 (10/100 Mbps)
Communication Protocol	Modbus Plus, Modbus TCP
Component Total	268 discrete parts
Internal Energy Storage	560 µF capacitor bank
Drop Addressing	0 to 63 (rotary switch)
Network Speed	1 Mbps (Modbus Plus)
Max Drop Distance	450 meters per segment
Curren Consumption	300 mA at 5V, 150 mA at 24V
Operating Temperature	0°C to +60°C

Internal Design and Energy Storage

The 140CRA21120C contains exactly 268 discrete components onboard. A 560 microfarad capacitor bank filters noise from the internal power supply. Dual network controllers handle communication on each RJ45 port independently. The module includes galvanic isolation for all network interfaces. A dedicated processor manages the drop interface protocol stack. Flash memory stores configuration data persistently without battery backup.

Operational Performance

This DIO drop interface connects remote I/O racks to the main PLC controller. It supports both Modbus Plus and Modbus TCP protocols. Moreover, the unit passes I/O data between local modules and the central CPU. You can daisy-chain multiple drops using the second Ethernet port. The module auto-negotiates network settings for plug-and-play operation. Four LEDs show real-time network status for effective troubleshooting. Consequently, you achieve reliable remote I/O distribution for large systems. Schneider designed this module for Quantum platform expansion. Its rugged construction withstands industrial noise and vibration.

In summary, the 140CRA21120C delivers robust remote I/O connectivity. Use this module for distributed automation systems. It simplifies wiring by placing I/O near the field devices. Order this DIO drop interface for your Schneider Quantum network.