Schneider Electric Modicon Quantum 140 Series Modules – 140AII33010

Technical Dossier

Product Details And Specifications

Schneider Electric Modicon Quantum 140 Series Technical Notes

The Modicon Quantum 140 series is Schneider Electric's flagship rack-based PLC platform, deployed across the most demanding segments of global heavy industry — including petrochemical refineries, nuclear power generation facilities, offshore oil & gas platforms, and large-scale chemical processing plants. With a documented installed base spanning over three decades, the Quantum architecture remains one of the most widely maintained legacy control systems in continuous-process industries. Its modular backplane design, deterministic scan cycle, and support for redundant CPU configurations have made it the reference standard for Safety Instrumented Systems (SIS) and Distributed Control System (DCS) hybrid architectures worldwide.

The Evolution of Modicon Quantum 140 Architecture

The Quantum 140 platform was introduced in the early 1990s as the successor to the Modicon 984 series, inheriting its ladder logic programming model while introducing a 32-bit processor architecture and a high-speed local I/O bus. The original CPU modules (140CPU11302, 140CPU21304) operated on Modbus Plus as the primary network backbone. By the mid-1990s, Ethernet TCP/IP support was introduced via the 140NOE77100 and 140NOE77101 network option modules, enabling integration with SCADA systems and plant historians.

The second architectural generation introduced Hot Standby redundancy (140CPU67160 / 140CPU67261), allowing bumpless transfer between primary and standby CPUs — a critical requirement for continuous-process industries where unplanned shutdowns carry multi-million-dollar cost implications. The third generation extended the platform's lifecycle through Unity Pro software compatibility, replacing the legacy Concept and ProWORX programming environments. As of 2026, the Quantum 140 series is classified by Schneider Electric as End of Life (EOL) / End of Commercialization (EOC) for most modules, with active migration paths recommended toward the Modicon M580 (ePAC) platform. However, the installed base remains extensive, and long-term maintenance support — including spare parts sourcing — remains a primary operational requirement for asset owners.

Modicon Quantum 140 Full Catalog & Functionalities (SKU List)

CPU & Processor Modules

• 140CPU11302: Entry-level Quantum CPU, 512KB user memory, Modbus Plus port, single-slot.
• 140CPU21304: Mid-range CPU, 1MB user memory, dual Modbus Plus ports, enhanced scan performance.
• 140CPU43412A: High-performance CPU, 2MB memory, Ethernet + Modbus Plus, Unity Pro compatible.
• 140CPU65150: Advanced CPU with 4MB memory, dual Ethernet ports, IEC 61131-3 full compliance.
• 140CPU67160: Hot Standby primary CPU, 4MB memory, redundancy-ready backplane interface.
• 140CPU67261: Hot Standby primary CPU, enhanced version, 8MB memory, dual Ethernet, Unity Pro.

Analog Input Modules

• 140AII33010: 16-channel analog input module, 4–20mA / 0–20mA, 12-bit resolution, single-ended.
• 140AVI03000: 8-channel analog voltage input, ±10V / 0–10V, 12-bit, isolated channels.
• 140ARI03010: 8-channel RTD/resistance input module, Pt100/Pt1000/Ni100, 16-bit resolution.
• 140ATI03000: 8-channel thermocouple input module, types J/K/T/E/R/S/B, cold junction compensation.

Analog Output Modules

• 140AVO02000: 4-channel analog voltage output, ±10V / 0–10V, 12-bit, short-circuit protected.
• 140ACO13000: 4-channel analog current output, 4–20mA, 12-bit, loop-powered, diagnostics.

Digital Input Modules

• 140DAI35300: 32-channel 24VDC digital input, sink/source, LED status per channel.
• 140DAI54300: 16-channel 115VAC digital input, optically isolated, surge protected.
• 140DDI35300: 32-channel 24VDC digital input, high-density, IEC Type 1/2/3 compatible.

Digital Output Modules

• 140DAO84010: 32-channel 24VDC digital output, 0.5A per channel, short-circuit protection.
• 140DDO35300: 32-channel 24VDC transistor output, high-density, 0.5A per channel.

Communication & Network Modules

• 140NOE77100: Ethernet TCP/IP network option module, 10/100 Mbps, Modbus TCP server.
• 140NOE77101: Enhanced Ethernet module, web server, FTP, SNMP, dual-port switch.
• 140NOM21200: Modbus Plus network option module, peer-to-peer messaging, global data.

Power Supply Modules

• 140CPS11420: 115/230VAC input power supply, 20A @ 5VDC backplane output, single-slot.
• 140CPS21400: 24VDC input power supply, 20A @ 5VDC, for DC-powered panel installations.
• 140CPS41400: Redundant power supply module, hot-swappable, for high-availability racks.

Quality Control for the Modicon Quantum 140 Range

The Quantum 140 backplane uses a proprietary high-speed local bus operating at 1.5 Mbps, with module identification and health status communicated via a dedicated I/O bus separate from the data path. Quality verification for 140-series modules at DriveKNMS follows a structured protocol: each module undergoes visual inspection for backplane connector pin integrity (a common failure point on field-pulled units), capacitor ESR testing on the internal DC-DC converter stages, and functional verification using a live Quantum rack with Unity Pro diagnostic software. Analog modules including the 140AII33010 are calibrated against a traceable reference standard and verified across the full input range (0–20mA and 4–20mA) at 25°C ambient. Communication modules (140NOE series) are tested for Modbus TCP response latency and Ethernet port integrity. All tested units are issued a DriveKNMS inspection report prior to shipment.