Product Overview

The 140CPS11420​ is a high-capacity AC power supply module purpose-built for Schneider Electric’s Modicon Quantum automation platform—one of the most trusted large-scale PLC systems in global industrial automation. As the primary power backbone of the Quantum rack, the 140CPS11420​ converts worldwide-compatible 115 V AC (93–132 V) or 230 V AC (170–276 V) mains input into a stable, low-noise 5.1 V DC output that energizes the backplane, CPU, I/O modules and communication interfaces. The defining architectural advantage of the 140CPS11420​ is its dual-mode capability: it operates either as a standalone 11 A power source at 60 °C, or in summable (parallel-redundant) configuration where two modules share the load to deliver a combined 20 A—effectively doubling available current for massive I/O clusters or providing 1+1 redundancy to eliminate power supply as a single point of failure.Designed to Schneider Electric’s original manufacturing standards, the 140CPS11420​ incorporates comprehensive internal protection against both overvoltage and overload conditions, ensuring that transient mains disturbances or downstream backplane faults never propagate to the sensitive control electronics. A green “PWR OK” LED on the module faceplate provides instant local verification of healthy operation, while a dedicated normally-closed (NC) alarm relay contact rated at 6 A / 220 V allows the 140CPS11420​ to signal power-fault events to external SCADA systems, annunciator panels or emergency shutdown logic the moment an anomaly is detected. With a rated power of 130 VA, harmonic distortion held below 10% of the fundamental RMS value, and power dissipation calculated as 6 + (1.5 × Iout) watts, the 140CPS11420​ delivers exceptionally clean power to the backplane—preventing electrical noise from interfering with high-precision analog input modules and ensuring the accuracy of critical process data.Physically, the 140CPS11420​ adopts the standard Quantum module form factor, weighing just 0.65 kg for easy handling and direct rack insertion. Engineered for continuous industrial duty, the module operates reliably across a 0 °C to +60 °C ambient range, tolerates up to 95% relative humidity (non-condensing), and performs at altitudes as high as 5000 meters—qualities that make it equally suitable for desert oil fields, offshore platforms, high-altitude mining operations and refrigerated food processing facilities. Certified to UL 508, CSA C22.2 No. 142 and cUL standards, with resistance to 4 kV contact / 8 kV air electrostatic discharge and 10 V/m electromagnetic fields per IEC 801, the 140CPS11420​ represents the gold standard for Quantum platform power integrity. For plant engineers committed to preserving their installed base of Modicon Quantum PLCs, the 140CPS11420​ remains the definitive spare part—delivering zero-downtime summable redundancy, global voltage versatility and industrial-grade ruggedness in a single, compact module.

Technical Specifications

Main Features and Advantages

Summable 1+1 redundancy for zero downtime:The defining advantage of the 140CPS11420​ is its summable architecture. Two modules installed side-by-side on a single Quantum backplane share the load to deliver a combined 20 A output, but more importantly, they provide true 1+1 redundancy—if one unit fails, the other seamlessly carries the entire rack load without interruption. This capability is transformative for mission-critical process control applications where even a momentary power loss triggers emergency shutdowns, safety trips and six-figure production losses. With the 140CPS11420, power supply failure ceases to be a single point of failure.Global dual-voltage versatility:The 140CPS11420​ accepts both 115 V AC (North American standard) and 230 V AC (European/Asian standard) inputs across a wide tolerance band (93–132 V or 170–276 V) at 47–63 Hz. This worldwide compatibility eliminates the need for region-specific spare inventory—a single part number serves global facilities, dramatically simplifying procurement, reducing carrying costs and accelerating emergency replacements for multinational corporations operating Modicon Quantum PLCs across continents.Ultra-clean power for sensitive I/O:By limiting harmonic distortion to ≤10% of the fundamental RMS value and incorporating internal overvoltage/overload protection, the 140CPS11420​ delivers exceptionally “quiet” 5.1 V DC power to the Quantum backplane. This clean power profile prevents electrical noise from coupling into high-precision analog input modules, ensuring the accuracy and stability of critical process measurements—flow, pressure, temperature, composition—that directly impact product quality and safety compliance.