Schneider Electric 140CPU43412A Modicon Quantum 80486 Processor

Product Overview

The Schneider Electric 140CPU43412A represents a high-performance processing solution for the Modicon Quantum automation platform. Built on the 80486 architecture with an integrated mathematical coprocessor, this unit handles complex floating-point calculations and large-scale logic execution with high efficiency. Operating at 66 MHz, it provides the computational speed required for sophisticated process control and high-speed discrete automation. We supply this processor as 100% brand new original equipment, ensuring maximum system longevity and full compatibility with ProWORX 32 and Concept software environments.

Technical Specifications

The 140CPU43412A delivers deterministic performance across local, remote, and distributed network topologies.

• Processor Name: 80486 (with Mathematical Coprocessor)

• Clock Frequency: 66 MHz

• Internal RAM: 896 kB

• Execution Time: 0.1 to 0.5 ms per 1K LL984 instructions

• Communication Ports: 1 x Modbus Plus, 2 x Modbus RS232

• I/O Capacity (Local): 64 Inputs / 64 Outputs max

• I/O Capacity (Remote): 64 Inputs / 64 Outputs

• Network Support: 3 Distributed / 2 Remote networks

• Bus Current Requirement: 1250 mA

• Battery Type: 1.2 Ah Lithium (10-year service life)

• Operating Altitude: Up to 16,404 ft (5000 m)

• Product Weight: 1.87 lb (0.85 kg)

Engineering Advantages

• Advanced Computational Power: The integrated 80486 mathematical coprocessor allows the CPU to execute floating-point arithmetic without offloading tasks to secondary hardware. This accelerates PID loop calculations and complex scaling algorithms, improving overall process response times.

• Extensive Communication Connectivity: Three onboard ports (1 Modbus Plus and 2 Modbus RS232) eliminate the need for additional communication cards in standard applications. This allows for simultaneous peer-to-peer networking, HMI connectivity, and local programming access from a single module.

• High-Density Network Management: The processor manages up to 63 distributed drops and 31 remote drops across multiple networks. This expansive capacity enables engineers to centralize control for complex, facility-wide systems into a single Quantum rack, reducing hardware costs and footprint.

• Rugged Industrial Hardening: Certified for FM Class 1 Division 2 environments, this processor withstands electrostatic discharges (up to 8 kV air) and high-frequency electromagnetic fields (up to 10 V/m). These protections prevent signal corruption and hardware failure in environments with high electrical noise.

• Physical Security with Key Switch: The integrated physical key switch provides a hardware-level lock for the memory and operating state. This prevents unauthorized program modifications or accidental stops, ensuring the integrity of the process in high-traffic control rooms.

FAQs

• What is the primary benefit of the "-A" suffix in the 140CPU43412A model?

  The "A" revision often indicates hardware updates that maintain backward compatibility while improving component availability and internal efficiency. It functions as a direct, high-performance replacement for earlier versions of the 43412 series.

• How does the mathematical coprocessor affect my scan time?

  It significantly reduces the execution time for numerical instructions. While Boolean logic remains fast, the coprocessor specifically targets fixed-point and floating-point arithmetic, preventing "math-heavy" programs from causing watchdog timer trips.

• Can I use this processor at high altitudes?

  Yes. The 140CPU43412A supports operation at altitudes up to 5000 meters (16,404 ft). This makes it ideal for specialized applications in mining, aerospace testing facilities, and high-altitude energy projects.

• Is this unit supplied with a battery?

  Yes. Every Brand New 140CPU43412A includes a high-capacity 1.2 Ah Lithium battery. With a typical 10-year life, it provides reliable backup for your 896 kB of internal RAM during extended power outages.