High-Availability Control for Demanding Automation Applications
The Schneider Electric 140CPU67861 is a premium Quantum series processor module. It features Hot Standby redundancy for maximum system availability in critical processes. This single-mode processor manages extensive local and distributed I/O networks effectively. Consequently, it is ideal for complex applications in water treatment, power generation, and manufacturing.
Technical Specifications and System Architecture
This powerful processor from Schneider operates with a 266 MHz clock frequency. It supports multiple rack configurations and a vast number of remote I/O stations. Furthermore, its architecture accommodates virtually unlimited I/O points across Ethernet networks.
Detailed Technical Parameters
| Parameter | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Model Number | 140CPU67861 |
| Product Series | Modicon Quantum |
| Product Category | Premium Hot Standby CPU / Processor Module |
| Transmission Mode | Single Mode |
| Processor Clock Frequency | 266 MHz |
| Supported Local Racks | 2 |
| Local Backplane Slots | Configurable: 2, 4, 6, 10, or 16 slots |
| Distributed I/O Stations (Modbus Plus) | Up to 63 stations |
| Remote I/O Stations (S908 RIO) | Up to 31 stations |
| Remote I/O Stations (Ethernet Quantum) | Up to 31 stations |
| Remote I/O Stations (Ethernet X80) | Up to 31 stations |
| Discrete I/O Capacity (Remote) | 31,744 Inputs & 31,744 Outputs |
| Discrete I/O Capacity (Distributed MB+) | 8,000 Inputs & 8,000 Outputs per network |
| Discrete I/O Capacity (Ethernet Remote) | Virtually Unlimited (31 drops of 28 slots max) |
| Discrete I/O Capacity (Local) | 0 (Forbidden in Hot Standby configuration) |
| Analog I/O Capacity (Remote) | 1,984 Inputs & 1,984 Outputs |
| Analog I/O Capacity (Distributed MB+) | 500 Inputs & 500 Outputs per network |
| Analog I/O Capacity (Ethernet Remote) | Virtually Unlimited (31 drops of 28 slots max) |
| Analog I/O Capacity (Local) | 0 (Forbidden in Hot Standby configuration) |
| Specialized I/O Support | High-speed interrupts, Counters, Timestamping |
| Communication Services | Serial Link, Ethernet Routing, Modbus Services |
| Module Dimensions | Standard Quantum double-width module |
| Module Weight | Approximately 0.8 kg |
| Power Supply | 5V DC from Quantum baseplate |
| Internal Memory | Integrated for program, configuration, and data |
Key Features and Redundancy Operation
The 140CPU67861 provides seamless failover with its integrated Hot Standby logic. The active and standby processors synchronize program and data memory continuously. This module also supports high-speed interrupt inputs for time-critical event responses. Moreover, its built-in Ethernet routing enables seamless integration into plant-wide networks. These features ensure uninterrupted control for processes where downtime is unacceptable.
Application Context and I/O Strategy
This processor manages vast I/O counts across hybrid networks including Modbus Plus and Ethernet. It is perfectly suited for large-scale SCADA and distributed control system (DCS) applications. The 140CPU67861 handles complex PID loops, sequencing, and data logging simultaneously. Engineers utilize its accurate time-stamping capability for event sequence recording. Therefore, it serves as a powerful and resilient backbone for major industrial automation projects.
System Configuration and Communication
Configuration requires Unity Pro software to program the processor’s control strategy. The local system uses a 140XBP series baseplate with the specified number of slots. Networking involves connecting remote drops via appropriate adapters like 140CRP or NOE. The Hot Standby pair requires a dedicated 140CHS cable for synchronization and heartbeat communication.
Details
| Weight | 0.91 kg |
|---|---|
| Dimensions | 110 × 55 × 90 mm |



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