Schneider 140CPU67160S Unity Safety Processor – SIL 3 Certified

The Schneider 140CPU67160S executes both standard and safety-related control tasks. This Unity safety processor monitors emergency stops, light curtains, and safety mats. You can integrate it into a Quantum PLC rack for high-risk machinery. The processor meets SIL 3 requirements according to IEC 61508 standards.

Processing and Memory Specifications

The Schneider 140CPU67160S stores all safety logic in dual-redundant memory areas. This processor executes standard logic alongside safety tasks without interference. You can program both logic types using Unity Pro XL software. The unit handles up to 20,000 safety function blocks in a single application.

Physical Dimensions and Weight

This safety processor occupies one slot in a Quantum rack. The unit weighs 0.85 kg for stable backplane connection. Its compact 45 mm width leaves room for I/O modules. You can insert the Schneider 140CPU67160S next to standard Quantum modules without restrictions.

Communication Interfaces

The processor includes two built-in communication ports. A Modbus RS-232 port connects to programming terminals or HMIs. An Ethernet port supports Modbus TCP/IP for network integration. Additionally, the processor features a USB mini-B port for local firmware updates. Each port provides electrical isolation from field cabling.

Energy Storage and Data Retention

An internal supercapacitor provides temporary power for clock and RAM. This capacitor stores enough energy for 30 days of data retention. After 30 days, the processor loses all non-flushed retentive variables. The Schneider 140CPU67160S does not include a user-replaceable battery. For long-term retention, you can add an external battery module (140XBP00200).

Internal Components and Architecture

Two independent microcontrollers operate in a lockstep safety architecture. Each microcontroller compares its计算结果 before enabling outputs. Thirty-two diagnostic LEDs report processor and communication status. The Schneider 140CPU67160S contains no user-serviceable fuses or relays. A real-time clock tracks events with ±2 minutes per month accuracy.

Safety Features and Certification

This processor performs automatic self-tests every 100 milliseconds. These tests verify RAM, CPU registers, and safety-critical circuitry. The unit generates a safe state by de-energizing all safety outputs. You can achieve SIL 3 for emergency stop and guard monitoring applications. Transitioning to this processor simplifies compliance with machinery safety standards. For best results, pair the Schneider 140CPU67160S with safety-rated I/O modules.