Description

The SCHNEIDER 140CPU11303​ is a high-performance, redundant-capable CPU (Central Processing Unit) module for the Modicon Quantum automation platform by Schneider Electric. This controller serves as the core brain of a PLC system, executing control logic and managing communications for demanding industrial applications. It is designed for critical processes requiring high availability through its integrated hot standby coprocessor, supporting seamless failover to maintain continuous operation.

Memory: 1 MB

Ethernet Ports: 2 x 10/100 Mbps (Modbus TCP, Ethernet/IP)

Hot Standby: Integrated coprocessor for redundancy

Product Detailed Description

140CPU11303 Technical Specifications

Product Model: 140CPU11303

Manufacturer: Schneider Electric (Modicon)

Product Type: Programmable Logic Controller (PLC) CPU Module

Series: Modicon Quantum

Processor: 80486 Class

Memory: 1 MB

Communication Ports:

Port 1: Modbus/Jbus (RS-485)

Port 2: Modbus Plus (RS-485)

Port 3 & 4: 10/100 Mbps Ethernet (TCP/IP, Modbus TCP, Ethernet/IP)

Redundancy Support: Hot Standby (via integrated coprocessor in same rack)

I/O Capacity: Supports full Quantum 8000 I/O points (depends on rack configuration)

Programming Software: Schneider Electric Unity Pro

Backup Memory: Battery-backed RAM

Operating Temperature: -40°C to +70°C

Certifications: CE, UL, cULus Listed

140CPU11303 Product Overview

The SCHNEIDER 140CPU11303​ is a central processing unit within the renowned Modicon Quantum family of programmable automation controllers. As the core computational engine, the 140CPU11303​ is responsible for executing user-defined control programs, processing data from connected I/O modules, and managing communication across various industrial networks. This SCHNEIDER 140CPU11303​ is engineered for applications where system uptime is paramount. Its standout feature is the integrated hot standby architecture, which allows a primary and backup CPU to operate in tandem within a single rack. In the event of a failure in the primary module, the backup can assume control within a single scan cycle, preventing costly process interruptions. This makes the 140CPU11303​ an ideal choice for supervisory control, complex sequential processes, and critical infrastructure where reliability cannot be compromised.

Main Features and Advantages

High Availability through Integrated Hot Standby: The most significant advantage of the 140CPU11303​ is its built-in redundancy solution. Unlike systems requiring a separate rack for a standby CPU, this module incorporates the standby coprocessor directly, offering a cost-effective and space-saving path to high availability. This design ensures sub-second failover, maintaining continuous operation for processes in water treatment, power generation, and oil & gas.

Powerful Processing and Communication: Equipped with a robust processor and 1MB of memory, this CPU handles complex control algorithms and large I/O configurations efficiently. Its versatile communication suite includes dual Ethernet ports for integration into modern IT/OT networks using Modbus TCP or Ethernet/IP, alongside legacy Modbus and Modbus Plus ports for connecting to existing field devices and panels.

Rugged Industrial Design and Diagnostics: Built to thrive in harsh environments, the 140CPU11303​ operates reliably across an extreme temperature range from -40°C to +70°C. Comprehensive diagnostic capabilities, accessible via the front-panel LCD display and Unity Pro software, provide clear insights into CPU health, I/O status, and network activity, enabling proactive maintenance and rapid troubleshooting.

Application Scenarios

The SCHNEIDER 140CPU11303​ is deployed in industries where control system failure is not an option. In a large municipal water treatment plant, multiple 140CPU11303​ CPUs might manage the filtration, chemical dosing, and pump control processes. Here, the integrated hot standby functionality is critical. If the primary CPU monitoring the high-pressure pump controls were to fault, the standby coprocessor in the 140CPU11303​ would instantly take over, preventing a pump shutdown that could disrupt water supply to thousands of residents. Similarly, in a pharmaceutical batch process, the CPU’s deterministic execution and communication reliability ensure precise recipe control and data integrity for compliance.

Selection and Purchasing Advice

When selecting the SCHNEIDER 140CPU11303. first confirm your need for high availability. If your process can tolerate a brief shutdown for CPU replacement, a non-redundant CPU may be sufficient. However, for critical continuous processes, the 140CPU11303’s integrated hot standby is a key investment. Ensure your engineering team is proficient with Schneider Electric’s Unity Pro software for configuration. Verify that the I/O point count and memory of the 140CPU11303​ meet your application’s needs, considering future expansion.

Frequently Asked Questions (FAQ)

Q: What is the difference between Hot Standby and Quantum redundancy?

A: The 140CPU11303​ offers Hot Standby (HSBY)​ redundancy within a single rack. Full Quantum redundancy involves two separate racks with synchronized CPUs for the highest level of availability, suitable for larger, more distributed systems.

Q: Can the Ethernet ports on the 140CPU11303​ be used simultaneously for different protocols?

A: Yes, the dual Ethernet ports are independent. You can configure one port for Modbus TCP​ communication with HMIs and another for EtherNet/IP​ to connect with other vendor’s devices, providing flexible network integration.

Q: How is the program backed up?

A: The control program is stored in battery-backed RAM. It is crucial to also maintain an offline backup in the Unity Pro project file on an engineering workstation. The battery must be monitored and replaced periodically as per maintenance schedules.

Related Products

SCHNEIDER 140CPS11420: A modular power supply system for the Quantum rack, providing clean and stable power to the 140CPU11303​ and other modules.

SCHNEIDER 140XBP00600: A 6-slot Quantum local rack that houses the 140CPU11303​ CPU and I/O modules.

SCHNEIDER 140NOE77101: A network interface module that can extend the communication capabilities of a system centered on the 140CPU11303.

Unity Pro Software: The essential programming, configuration, and diagnostics suite for the 140CPU11303.

Various 140 Series I/O Modules (e.g., 140DDI35300): A wide range of digital and analog input/output modules that connect to the field and are managed by the 140CPU11303.

Installation and Maintenance

Installation Preparation: Before installing the 140CPU11303. ensure the Quantum rack is securely mounted and powered down. Verify the compatibility of all modules in the rack. Have the latest version of Unity Pro software and the correct firmware files ready for the initial download.

Maintenance Suggestions: Regularly check the status of the CPU’s battery indicator. Perform periodic downloads of the diagnostic buffer to review system events. Keep the firmware of the 140CPU11303​ updated to the latest stable version recommended by Schneider Electric to ensure optimal performance and security. Ensure adequate ventilation around the rack to maintain operating temperature within specifications.

Product Assurance

We stand behind the quality and performance of every SCHNEIDER 140CPU11303​ module we supply, ensuring it is a genuine Schneider Electric component. Our technical support team can assist with integration guidance. For reliable automation solutions backed by expert service, partner with us.

We guarantee the authenticity of every SCHNEIDER 140CPU11303​ CPU module provided. Our expertise ensures you receive the right component and the support needed for a successful integration into your critical control system.