Description
The Schneider Electric 140CPU67160C is a high-performance Unity Hot Standby processor belonging to the Modicon Quantum series. This “C” version is specifically treated with a conformal coating, making it ideal for deployment in harsh industrial environments where moisture, dust, or corrosive chemicals are present.
Product Parameters (Datasheet)
- Model Number: 140CPU67160C
- Series: Modicon Quantum
- Processor Type: Unity Hot Standby CPU
- Clock Speed: 266 MHz
- Memory (Internal): 1024 kB (Program), 768 kB (Data)
- Memory (Expandable): Up to 8 MB via PCMCIA card
- Communication Ports: * 1 x Modbus RS-232/485
- 1 x Modbus Plus
- 1 x USB (Programming)
- 2 x Ethernet (For Hot Standby synchronization)
- Max I/O Capacity: 31 Remote I/O drops / 63 Distributed I/O drops
- Protection: Conformal Coated (Class 3C2 / 3S2)
- Redundancy: Integrated high-speed Hot Standby (HSBY) support

SCHNEIDER 140CPU67160C

SCHNEIDER 140CPU67160C

SCHNEIDER 140CPU67160C
Country of Origin
This PLC processor is engineered and manufactured by Schneider Electric in France, adhering to the highest global standards for critical infrastructure automation.
Application Fields
The 140CPU67160C is designed for “zero-downtime” applications in demanding sectors:
- Water & Wastewater: Managing large-scale pumping stations and desalination plants.
- Oil & Gas Midstream: Controlling pipeline compressor stations and tank farms.
- Mining & Metals: Operating heavy-duty crushers and conveyor systems in dusty environments.
- Chemical Processing: Monitoring reactor sequences where corrosive vapors may be present.
- Power Generation: Coordinating balance-of-plant (BOP) systems for stable energy production.
Product Usage Instructions
- Chassis Installation: Slide the CPU into the first or second slot of a Quantum backplane. Ensure the locking tabs are clicked securely into place.
- Redundancy Setup: For Hot Standby, use a fiber optic sync cable to connect the “Sync” ports of two identical 140CPU67160C processors.
- Powering: Ensure the Quantum power supply module in the same rack is rated to handle the CPU’s consumption plus all associated I/O modules.
- Programming: Use Schneider’s Unity Pro (now EcoStruxure Control Expert) software to develop logic. The USB port provides the fastest connection for program transfers.
- Environmental Care: Although conformal coated, ensure the cabinet filters are maintained to prevent excessive heat buildup around the processor fins.
Product Technical Description
The 140CPU67160C represents the peak of the Modicon Quantum evolution. It is architected for maximum availability; in a Hot Standby configuration, if the primary CPU fails, the standby unit takes over the control task in less than one scan cycle without interrupting the process. The “C” suffix denotes the application of a protective polymer layer over the internal circuitry. This coating prevents “dendrite growth” and corrosion caused by humidity and salt spray, which is essential for offshore or wastewater applications.
Q&A (Common Questions)
Q: Can I use a standard 140CPU67160 (non-C) as a standby for this coated version? A: While they are functionally identical, it is highly recommended to use identical part numbers in a Hot Standby pair to ensure matching environmental resistance and timing characteristics.
Q: What PCMCIA memory cards are compatible? A: It supports Schneider SRAM or Flash cards for extended program storage or data logging.
Q: Is the battery replaceable while the PLC is running? A: Yes, the battery can be replaced while power is applied to the rack to ensure the RAM remains energized.
Q: Does this CPU support DNP3 or IEC 60870-5-104 protocols? A: Yes, these protocols are supported via the integrated Ethernet ports when configured in Unity Pro/Control Expert.
Similar Model Recommendations
- Schneider 140CPU67160 (Standard non-coated version)
- Schneider 140CPU65150 (Lower memory Unity CPU)
- Schneider 140CPU67260 (High-performance HSBY variant)
- Schneider 140CPS11420 (Redundant Power Supply for Quantum)
- Schneider BMEH582040 (Modern M580 replacement/upgrade path)
For technical documentation or a quote on the Schneider 140CPU67160C, please visit our industrial automation product catalog.

