Schneider Electric Modicon Quantum 140CRP93200C Modules

Technical Dossier

Product Details And Specifications

Schneider Electric Modicon Quantum Series Technical Notes

The Schneider Electric Modicon Quantum platform is one of the most widely deployed programmable automation controller (PAC) architectures in global heavy industry. Installed across petrochemical refineries, nuclear power generation facilities, offshore oil & gas platforms, and large-scale chemical processing plants, the Quantum series established a benchmark for high-availability, rack-based control architecture throughout the 1990s and 2000s. Its modular backplane design, deterministic Modbus Plus and Ethernet I/O communication, and broad third-party integration support made it the default selection for safety-critical and continuous-process environments requiring 24/7 uptime. As of 2026, the Quantum platform has entered its end-of-active-development phase, but installed base volumes across global industrial infrastructure ensure sustained demand for spare parts, replacement modules, and lifecycle extension services for the foreseeable future.

The Evolution of Modicon Quantum Architecture

The Modicon Quantum platform was introduced by Schneider Electric (then Modicon/AEG) in the early 1990s as a successor to the Modicon 984 series. The architecture was built around a passive backplane accepting up to 16 modules per rack, with a dedicated CPU slot and hot-standby redundancy capability from the outset. Early CPUs such as the 140CPU11302 and 140CPU43412A operated on Modbus Plus as the primary field bus, with I/O expansion via the S908 Remote I/O (RIO) protocol — a deterministic token-passing network capable of distances up to 4,500 meters.

The mid-generation transition introduced Ethernet-capable CPUs (Unity series), including the 140CPU65150 and 140CPU65160, which supported Modbus TCP/IP natively and enabled integration with SCADA systems over standard LAN infrastructure. The RIO drop cable adapter family — including the 140CRP93200C — served as the physical and logical bridge between the Quantum backplane and distributed S908 RIO drops, a role that remained architecturally unchanged across the platform's lifespan.

By the 2010s, Schneider Electric positioned the Modicon M580 (ePAC) as the strategic successor to the Quantum platform, offering native EtherNet/IP, IEC 61131-3 programming, and cybersecurity hardening. Migration toolkits exist for Quantum-to-M580 conversion, but the complexity of legacy wiring, certified safety loops, and long-horizon maintenance contracts means that Quantum hardware remains in active service at thousands of sites globally.

Modicon Quantum Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly stocked modules within the Modicon Quantum platform. Each entry reflects a distinct functional role within the system architecture.

CPU & Controller Modules

140CPU11302: Quantum CPU, 512KB memory, Modbus Plus port, no Ethernet.
140CPU43412A: Quantum CPU, 1MB memory, dual Modbus Plus, enhanced instruction set.
140CPU65150: Unity CPU, 4MB RAM, 1x Ethernet, Modbus TCP/IP, USB programming port.
140CPU65160: Unity CPU, 7MB RAM, dual Ethernet, hot-standby capable, web server.
140CPU67160: Unity CPU, 14MB RAM, dual Ethernet, cybersecurity features, M580 migration path.

Remote I/O & Communication Adapters

140CRP93200C: S908 RIO head adapter, supports up to 31 drops, coaxial or fiber media, rack-mount.
140CRA93200: S908 RIO drop adapter, connects remote racks to the RIO network head.
140CRA21110: Ethernet RIO adapter, 10/100 Mbps, supports distributed Quantum I/O over TCP/IP.
140NOE77101: Ethernet network option module, Modbus TCP/IP, web diagnostics, SNMP.
140NOE77111: Ethernet module with enhanced security, RSTP, IGMP snooping support.

Digital Input Modules

140DAI54000: 32-channel 24VDC digital input, sink/source, LED status per channel.
140DAI74000: 16-channel 115VAC digital input, isolated, DIN rail or rack mount.
140DDI35300: 32-channel 24VDC digital input, high-density, IEC 61131-2 compliant.

Digital Output Modules

140DAO84000: 16-channel 115/230VAC digital output, relay isolated, 2A per channel.
140DDO35300: 32-channel 24VDC digital output, transistor, 0.5A per channel, short-circuit protection.

Analog I/O Modules

140ACI04000: 8-channel analog current input, 4–20mA, 12-bit resolution, individually isolated.
140ACO13000: 4-channel analog current output, 4–20mA, 12-bit, loop-powered.
140AVI03000: 8-channel analog voltage input, ±10V / 0–10V selectable, 12-bit.

Power Supply Modules

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

Sourcing Hard-to-Find & Obsolete Modicon Quantum Parts

Schneider Electric formally announced the end of commercialization for several Quantum CPU and communication module families between 2018 and 2023. However, the installed base across refineries, water treatment facilities, and power generation plants operating on 20–30 year maintenance cycles creates sustained demand for modules that are no longer manufactured. DriveKNMS maintains a dedicated inventory of tested Quantum spare parts, including end-of-life CPUs, RIO adapters, and I/O modules sourced through authorized secondary market channels.