Schneider Electric Modicon Quantum 140 Series Modules – 140ACO13000

Technical Dossier

Product Details And Specifications

Schneider Electric Modicon Quantum 140 Series Technical Notes

The Schneider Electric Modicon Quantum 140 series is one of the most widely deployed programmable automation controller (PAC) platforms in global heavy industry. Installed across petrochemical refineries, nuclear power stations, offshore platforms, chemical processing plants, and continuous manufacturing facilities, the Quantum platform has maintained a dominant position in safety-critical and process-critical automation since its commercial introduction in the early 1990s. Its modular rack-based architecture, deterministic scan cycle, and broad I/O density options made it the reference standard for large-scale DCS and hybrid control architectures throughout the 1990s and 2000s. As of 2026, the platform is in its mature-to-end-of-life phase, with Schneider Electric having transitioned its strategic roadmap toward the Modicon M580 (ePAC) platform. However, the installed base of Quantum systems remains enormous, and lifecycle extension, spare parts sourcing, and long-term maintenance support remain critical operational requirements for asset-intensive industries worldwide.

The Evolution of Modicon Quantum 140 Series Architecture

The Modicon Quantum platform was introduced by Modicon (later acquired by Schneider Electric) as a successor to the 984 series, designed to address the growing demand for high-density I/O, networked control, and redundant CPU architectures in process industries. The original architecture centered on a passive backplane (local and remote racks) connected via the S908 remote I/O bus, supporting up to 31 remote drops and thousands of I/O points per system.

In its first generation (mid-1990s), the platform offered basic CPU modules (140CPU11302, 140CPU43412) with limited memory and no Ethernet capability. The second generation introduced Ethernet-capable CPUs (140CPU65150, 140CPU65160) and Unity Pro programming software compatibility, replacing the earlier Concept and ProWORX environments. The third generation added Hot Standby redundancy (140CPU67160) and expanded communication options including Profibus, Modbus Plus, and DeviceNet adapters.

Compatibility across generations is constrained by backplane bus protocol and rack form factor. Early 140-series racks (140XBP01600, 140XBP01000) are physically and electrically compatible with later modules, but firmware and software version alignment between CPU and I/O modules must be validated. Unity Pro version compatibility matrices published by Schneider Electric are the authoritative reference for cross-generation integration.

With the announcement of Modicon Quantum end-of-commercialization, Schneider Electric formally recommends migration to the Modicon M580 platform. However, direct module-for-module replacement is not possible without engineering redesign, making long-term spare parts availability the primary operational concern for existing Quantum installations.

Modicon Quantum 140 Series Full Catalog & Functionalities (SKU List)

Analog Output Modules

• 140ACO13000: Analog output, 8-channel high-density, 4–20 mA / 0–20 mA, 12-bit resolution, single-width module for process control loops.
• 140ACO02000: Analog output, 4-channel, voltage/current configurable, standard density, used in legacy valve and actuator control.

Analog Input Modules

• 140ACI03000: Analog input, 16-channel, 4–20 mA, high-density, 12-bit resolution, standard process measurement module.
• 140ACI04000: Analog input, 8-channel, ±10 V / 0–10 V / 4–20 mA configurable, used in multi-signal field environments.
• 140ARI03010: Analog input, RTD/resistance, 8-channel, supports PT100/PT1000, used in temperature measurement loops.
• 140ATI03000: Analog input, thermocouple, 8-channel, supports J/K/T/E/R/S/B types, cold junction compensation included.

Digital Output Modules

• 140DAO84010: Discrete output, 32-channel, 24 VDC source, 0.5 A per channel, high-density, standard for solenoid and relay driving.
• 140DAO85300: Discrete output, 16-channel, relay, Form C contacts, 2 A per channel, used in high-current switching applications.
• 140DDO35300: Discrete output, 32-channel, 24 VDC, 0.5 A, sink type, used in NPN-compatible field devices.

Digital Input Modules

• 140DAI35300: Discrete input, 32-channel, 24 VDC, sink/source compatible, standard field signal acquisition module.
• 140DAI54300: Discrete input, 16-channel, 120 VAC, used in legacy AC field wiring environments.
• 140DDI35300: Discrete input, 32-channel, 24 VDC, high-density, IEC 61131-2 Type 1/3 compliant.

CPU Modules

• 140CPU65150: CPU, Unity Pro compatible, 1 MB user memory, 10/100 Ethernet port, Modbus TCP, supports up to 64K I/O points.
• 140CPU67160: CPU, Hot Standby redundancy capable, 2 MB user memory, dual Ethernet, primary/standby switchover <1 ms.
• 140CPU43412A: CPU, legacy Concept/ProWORX compatible, 512 KB memory, Modbus Plus, no Ethernet, common in pre-2005 installations.

Communication & Network Modules

• 140NOE77101: Ethernet TCP/IP network option module, 10/100 Mbps, supports Modbus TCP, FTP, HTTP, SNMP.
• 140NOM21200: Modbus Plus network option module, dual-port, used in legacy Modbus Plus peer-to-peer networks.
• 140CRP93200: RIO (Remote I/O) head adapter, S908 bus, supports up to 31 remote drops, primary/standby redundancy capable.

Power Supply Modules

• 140CPS11420: Power supply, 115/230 VAC input, 3.5 A at 5 VDC backplane output, standard single-rack supply.
• 140CPS21400: Power supply, 24 VDC input, 8 A output, used in DC-powered panel installations.

Sourcing Hard-to-Find & Obsolete Modicon Quantum 140 Series Parts

DriveKNMS maintains a dedicated inventory of new-surplus, refurbished, and tested-serviceable Modicon Quantum 140-series modules sourced through verified industrial surplus channels globally. Our procurement team actively tracks availability across North America, Europe, and Asia-Pacific to fulfill urgent replacement requirements for operating plants that cannot execute a full platform migration on short notice.

Quality Control for the Modicon Quantum 140 Series Range

The Modicon Quantum 140-series architecture presents specific quality verification challenges due to its passive backplane bus design, multi-layer PCB construction, and the age profile of available surplus inventory. DriveKNMS applies a structured inspection and functional test protocol to all 140-series modules prior to shipment.

For analog I/O modules (including the 140ACO13000), the test procedure includes: channel-by-channel output verification across the full 4–20 mA range using calibrated reference instruments; linearity and resolution verification at 12-bit scale; isolation resistance measurement between channel commons and backplane ground; and visual inspection of DAC components, output driver ICs, and terminal block integrity.

For CPU modules, testing includes: cold-boot cycle verification with Unity Pro or Concept software; memory read/write integrity test across full address space; Ethernet port link negotiation and Modbus TCP response verification; and battery-backed RAM retention test. For communication modules (NOE, NOM, CRP), network enumeration and data exchange tests are performed using reference Quantum rack configurations maintained in our test facility.