Description

The Schneider Electric 140CRA93100 is a Remote I/O (RIO) drop adaptor module designed to manage communication between a central Modicon Quantum PLC processor and remote expansion racks. Operating as the primary interface in a remote I/O drop, the unit handles single-cable coaxial signal transmission at a rate of 1.544 Mbit/s, enabling long-distance data exchange across distributed automation architectures.

Featuring a standard Quantum rack-mount form factor, the 140CRA93100 supports up to 27 I/O expansion modules within a single drop. The module connects to the coaxial network via an elbowed female F-connector and operates across a 35 dB dynamic range. Built-in diagnostic capabilities execute automated checks on startup and during runtime—including executive checksums and RAM address/data checks—to verify operational integrity and bus stability.

Features

• Enables communication between the primary controller and up to 27 remote I/O expansion modules within a Quantum RIO drop.
• Single-channel physical interface via a female elbowed F-connector for 75 Ohm coaxial cable networks.
• High-speed data transmission rate of 1.544 Mbit/s with a dynamic range of 35 dB.
• Diagnostic routines covering executive checksums alongside RAM address and data validation during power-up and runtime.
• 500 V DC isolation voltage between the coaxial center conductor and protective ground.
• Standard Modicon Quantum single-slot module form factor for direct rack backplane installation.

Applications

• Interfacing remote Quantum I/O racks with central Modicon Quantum PAC processor heads over coaxial cable networks.
• Managing high-density distributed I/O architectures requiring up to 27 expansion modules per remote drop.
• Infrastructure and processing applications requiring galvanic isolation across extended communication topologies.

Technical Specifications

General

Communication & Operational Capacities

Electrical & Power

Diagnostics

Environmental

Connections / Interfaces

Installation Guidelines

1. Power down the Modicon Quantum backplane rack before inserting or removing the drop adaptor module.
2. Align the module with the assigned rack slot and push firmly until the backplane connectors fully seat and the top/bottom locking levers engage.
3. Connect the 75 Ohm coaxial cable drop to the front female elbowed F-connector, ensuring the threaded coupling is properly tightened.
4. Maintain proper grounding practices across the coaxial trunk line and verify that the backplane rack is bonded to protective earth.
5. Ensure ambient operating conditions remain within 0 to 60 degC and relative humidity does not exceed 95% non-condensing.

Commissioning Recommendations

• Verify that all I/O expansion modules in the remote drop (up to 27 modules) are firmly installed and correctly configured in the PLC programming software prior to applying power.
• Observe module diagnostic indicators upon powering up the rack to confirm that executive checksums and RAM checks pass successfully.
• Verify that coaxial signal levels fall within the supported 35 dB dynamic range to prevent packet dropouts or network communication faults.

Compliance and Certifications