Schneider Electric 140CPU67261C Unity Hot Standby Processor for Quantum

Ensure maximum uptime for your critical processes with the Schneider Electric 140CPU67261C. This high-performance Unity Hot Standby (HSBY) CPU is the heart of a fault-tolerant Modicon Quantum system, designed to eliminate single points of failure and keep your plant running without interruption.

Key Features for Critical Control

• True Hot Standby Redundancy: Automatic, bumpless switchover to a standby CPU if the primary fails, ensuring zero process interruption.
• High-Speed Processing: 266 MHz processor capable of executing over 10,000 instructions per millisecond for complex control.
• Massive I/O Capacity: Manages tens of thousands of remote and distributed I/O points across multiple networks.
• Multi-Network Master: Native support for Ethernet, Modbus Plus, Profibus DP, and more for seamless system integration.
• Fiber Optic Heartbeat: Uses a single-mode fiber link (up to 16 km) for reliable, high-speed synchronization between primary and standby CPUs.

Complete Technical Specifications

Manufacturer & Model: Schneider Electric 140CPU67261C
Product Line: Modicon Quantum Redundant Processor
CPU Type: Unity Pro Hot Standby (HSBY) Processor
Processor Speed: 266 MHz
Redundancy Synchronization: Single-Mode Fiber Optic Link (LC connector, up to 16 km).
Memory: 11,264 kB RAM (1,536 kB for data), expandable via 8 MB PCMCIA card.
Performance: 10.28K Boolean instructions/ms.
Supported Rack Sizes: 2, 4, 6, 10, or 16 slots.
Local I/O Capacity: Supports 2 local racks (I/O in local racks is not allowed in HSBY configuration).
Remote I/O Capacity:
• Discrete: Up to 31,744 remote I/O points.
• Analog: Up to 1,984 remote I/O points.
• Stations: Up to 31 remote drops per network.
Integrated Communication Ports:
• 1 x Modbus Plus (SUB-D 9)
• 1 x Modbus (RJ45)
• 1 x USB (Programming/Configuration)
• 1 x Fiber Optic (HSBY Sync)
Optional Network Modules: Up to 6 each of Ethernet TCP/IP, Modbus Plus, or Profibus DP modules.
Power Consumption: 2760 mA @ 5V from the backplane.
Environmental & Certifications: CE, cULus, ATEX Zone 2, IECEx, GOST, Marine approvals. Conformal coated.
Programming Software: Schneider Electric Unity Pro.
Weight: Approx. 1.47 kg

Frequently Asked Questions (FAQ)

What is "Hot Standby" and why is it important?
Hot Standby means you have two identical CPUs (Primary and Secondary) running in parallel. If the Primary CPU, its power supply, or a network card fails, the Secondary takes over control instantly without stopping the process. This is critical for applications where downtime means lost production or safety risks.

Can I use local I/O modules with this CPU in a redundant system?
No. In a certified Hot Standby configuration, you cannot use I/O modules in the local CPU racks. All I/O must be on remote drops (over Ethernet, Modbus Plus, etc.) so both CPUs can access it equally. Local I/O is disabled in HSBY mode.

What kind of fiber cable is needed for synchronization?
You need a 9/125µm single-mode fiber optic cable with LC connectors to link the Primary and Secondary CPUs. This cable can be up to 16 kilometers long, allowing the backup CPU to be located far away for disaster protection.

How is programming done for a redundant pair?
You create one program in Unity Pro software. You then download this identical program to both the Primary and Secondary CPUs. The software manages the configuration of the redundant pair.

What support comes with this critical system component?
The 140CPU67261C is backed by our commitment to quality and includes a standard 12-month warranty. For such critical parts, we ensure rigorous testing before shipment.

Package & Shipping

You receive: 1 x Schneider Electric 140CPU67261C Unity Hot Standby Processor Module. We ship these critical components securely and swiftly worldwide via FedEx, UPS, and DHL.

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