Schneider Electric 140CRA93101 RIO Drop Adapter Module

Product Description

The 140CRA93101 from Schneider Electric is a Remote I/O (RIO) drop adaptor engineered for the Modicon Quantum platform, enabling communication between a Quantum PLC rack and an S908 coaxial Remote I/O network. This module serves as a critical interface in distributed control architectures, ensuring deterministic data exchange across remote I/O stations.

Designed for legacy Quantum systems, the unit integrates a single F-type coaxial connector with an angled design for simplified panel wiring. It supports high-speed communication over a 75-ohm coaxial medium and includes onboard diagnostics to maintain system integrity during both startup and runtime.

Although phased out, the module remains relevant in installed systems requiring maintenance or expansion of existing S908-based infrastructures.

Core Functional Overview

The 140CRA93101 operates as the communication bridge between the main processor and remote I/O drops within a Quantum system. Key capabilities include:

• Establishing S908 coaxial RIO network communication
• Supporting distributed I/O configurations with consistent scan performance
• Handling communication diagnostics and internal memory verification
• Providing electrical isolation between network and backplane

Technical Specifications

Lifecycle Information

• Discontinued Date: December 2, 2020
• End of Service: December 31, 2020
• Replacement Model: Modicon X80 BMECRA31210 (Ethernet-based RIO adapter)

Application Scenarios

The 140CRA93101 is typically deployed in established automation systems where coaxial RIO networks are still in operation:

• Legacy process control systems in energy and utilities
• Industrial plants with distributed I/O over S908 networks
• Retrofit or spare parts management for Quantum installations
• Systems requiring deterministic communication over coaxial media

FAQ

Q: What type of network does this module support? A: It supports the S908 Remote I/O network using 75-ohm coaxial cabling.

Q: Is it suitable for new system designs? A: No. For new projects, Ethernet-based RIO solutions such as the Modicon X80 series are recommended.

Q: How does it differ from newer RIO adapters? A: The 140CRA93101 uses coaxial communication, while newer models use Ethernet backplanes, offering improved scalability and integration.

Q: Can it be used interchangeably with 140CRA93100C? A: Both are S908 RIO adapters, but minor hardware or lifecycle differences should be verified before substitution in critical systems.