Schneider 140CHS21000 Hot Standby kit

The Schneider 140CHS21000 Hot Standby Kit is a high-availability automation component designed for the Modicon Quantum series of PLCs. This kit enables a dual-CPU architecture, allowing one CPU to act as the active processor and another to serve as a fully synchronized backup (hot standby), ready to take over instantly in the event of a primary failure.

This seamless redundancy ensures continuous operation for critical applications in process automation, manufacturing control, energy management, and infrastructure systems. With rapid switchover (typically within milliseconds), the kit dramatically reduces system downtime and minimizes the risk of production losses or safety incidents.

The 140CHS21000 Hot Standby Kit is compatible with various Quantum CPU models and is widely adopted in industries where system availability and process continuity are paramount.

Product Specifications

Applications

The Schneider 140CHS21000 Hot Standby Kit is widely used in applications requiring zero downtime and high operational reliability, such as:

• Process Industries

  Chemical, petrochemical, and pharmaceutical plants with continuous processes.

• Water & Wastewater Treatment

  Ensuring non-stop operation of critical pumping, filtration, and control systems.

• Power Generation & Distribution

  Automation of turbines, substations, and energy storage systems.

• Food & Beverage Manufacturing

  Where process interruption can lead to large-scale product loss or contamination.

• Oil & Gas Sector

  Onshore and offshore production, refining, and pipeline operations.

• Transportation Infrastructure

  Airport systems, railway networks, and intelligent traffic control.

• Metals & Mining

  Redundant control of extraction, smelting, and conveyor systems.

Product Advantages

• High Availability

  Provides seamless CPU redundancy, ensuring critical process continuity.

• Fast Switchover

  Typically switches to backup CPU in under 50 ms, minimizing disruptions.

• Full Synchronization

  Automatically synchronizes all CPU memory and I/O states between active and standby processors.

• Proven Compatibility

  Designed specifically for Quantum series PLCs, ensuring simple integration.

• Compact Design

  Minimal panel space required, thanks to optimized module size.

• Easy to Implement

  Supported by Unity Pro / EcoStruxure Control Expert programming software.

• Industrial-grade Reliability

  Operates continuously in harsh environments with high MTBF.

• Certified & Compliant

  Meets international standards for industrial automation systems (CE, UL, CSA).

• Field-proven Performance

  Installed in thousands of mission-critical applications worldwide.

• Minimal Maintenance

  Simple diagnostics and long service life reduce lifecycle costs.

Frequently Asked Questions (FAQ)

1. What is the main function of the 140CHS21000 Hot Standby Kit?

   It enables a hot standby redundant CPU architecture to ensure continuous operation in case of CPU failure.

2. Which PLC series does it support?

   The kit is specifically designed for the Modicon Quantum series of PLCs.

3. How fast is the switchover?

   Typical switchover occurs in less than 50 ms, depending on application conditions.

4. Does the kit require special cabling?

   It supports both fiber optic and Ethernet-based synchronization, depending on the CPU.

5. Can the system detect a fault automatically?

   Yes, built-in diagnostics automatically monitor CPU health and trigger a switchover if needed.

6. Does it require additional software licenses?

   No special license is required, only a supported version of Unity Pro or EcoStruxure Control Expert.

7. Is there a limit to the distance between CPUs?

   For Ethernet synchronization, standard industrial Ethernet distances apply; for fiber optic, distances up to several kilometers are supported.

8. Can I use this kit in outdoor or harsh environments?

   Yes, it is designed to withstand industrial temperature and humidity ranges.

9. Is redundancy limited to the CPU?

   This kit enables CPU redundancy; separate I/O redundancy or power redundancy may require additional components.

10. What is the expected service life of the 140CHS21000?

    The module offers MTBF of over 400,000 hours, ensuring many years of operation.