Schneider Electric Modicon Quantum 140 Modules – 140AVO02000

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 programmable automation controller (PAC) platform, engineered for large-scale process control in heavy industry. Deployed across petrochemical refineries, nuclear power generation facilities, offshore oil & gas platforms, and continuous chemical processing plants, the Quantum 140 architecture supports hot-standby redundancy, distributed I/O over Modbus Plus and Ethernet, and deterministic scan cycles required by safety-critical SIL-rated applications. Its 19-inch rack form factor, passive backplane design, and standardized 140-prefix module numbering have made it a de facto standard in brownfield DCS migration projects worldwide. The platform's longevity — spanning from the early 1990s through to current extended lifecycle support — means that a significant installed base remains operational, driving sustained demand for both new and refurbished spare parts.

The Evolution of Modicon Quantum 140 Architecture

The Quantum 140 platform was introduced by Modicon (subsequently acquired by Schneider Electric in 1994) as a successor to the Modicon 984 series. The original architecture centered on the 140CPU11302 and 140CPU11303 processors, which communicated with I/O modules via a proprietary S908 remote I/O bus. These early CPUs operated at clock speeds below 20 MHz and supported limited memory expansion.

The mid-generation transition introduced the 140CPU43412A and 140CPU53414A processors, incorporating dual Ethernet ports, expanded application memory (up to 7 MB), and native Unity Pro programming environment compatibility. This generation bridged legacy Concept/ProWORX ladder logic applications with IEC 61131-3 structured text and function block diagram programming.

The mature generation — represented by the 140CPU67160 and 140CPU67261 — added Hot Standby (HSBY) redundancy support, Modbus TCP/IP native integration, and compatibility with the Quantum EIO (Ethernet I/O) distributed architecture. These CPUs remain the most widely specified in new greenfield projects that still mandate the Quantum form factor for compatibility with existing engineering standards.

Modicon Quantum 140 Full Catalog & Functionalities (SKU List)

Analog Output Modules

• 140AVO02000: 8-channel analog voltage output module, ±10 V DC, 12-bit resolution, current sourcing
• 140AVO02000C: Conformal-coated variant of 140AVO02000 for harsh/humid environments
• 140ACO13000: 8-channel analog current output, 4–20 mA, 12-bit, loop-powered
• 140ACO02000: 4-channel analog current output, 0–20 mA / 4–20 mA selectable

Analog Input Modules

• 140AII33000: 16-channel analog current input, 4–20 mA, 12-bit resolution, single-ended
• 140AVI03000: 8-channel analog voltage input, ±10 V / 0–10 V, 12-bit
• 140ATI03000: 8-channel thermocouple input module, types J/K/T/E/R/S/B, cold junction compensation
• 140ARI03010: 8-channel RTD input module, PT100/PT1000, 3-wire configuration
• 140AMM09000: 8-channel mixed analog I/O module, 4 inputs / 4 outputs, 12-bit

Digital Input Modules

• 140DDI35300: 32-channel 24 V DC digital input, sink/source, IEC Type 1
• 140DDI84100: 16-channel 115 V AC digital input, isolated
• 140DAI54000: 32-channel 24 V DC digital input, high-density, protected

Digital Output Modules

• 140DDO35300: 32-channel 24 V DC digital output, 0.5 A per channel, source type
• 140DDO88500: 16-channel relay output, 2 A per channel, Form C contacts
• 140DAO84010: 32-channel 24 V DC digital output, high-density, protected

CPU / Controller Modules

• 140CPU43412A: Quantum PAC processor, 512 KB application memory, Modbus Plus + Ethernet
• 140CPU67160: High-performance PAC processor, 3.5 MB memory, Hot Standby capable
• 140CPU67261: Enhanced PAC processor, 7 MB memory, dual Ethernet, HSBY, Unity Pro

Communication & Network Modules

• 140NOE77101: Ethernet TCP/IP network option module, 10/100 Mbps, web server
• 140NOM21200: Modbus Plus network option module, peer-to-peer communications
• 140CRP93200: RIO (Remote I/O) head adapter, S908 bus, up to 31 drops

Power Supply Modules

• 140CPS11420: 115/230 V AC power supply, 3 A at 5 V DC, single-slot
• 140CPS21400: 24 V DC power supply input, 8 A at 5 V DC, redundancy-ready
• 140CPS41400: High-capacity AC power supply, 8 A at 5 V DC, for large rack configurations

Quality Control for the Modicon Quantum 140 Range

The Quantum 140 backplane uses a passive S908 bus architecture with edge-connector I/O module seating. This design is susceptible to contact oxidation, connector wear, and bus termination failures in high-humidity or high-vibration environments. DriveKNMS applies a dedicated test protocol for all Quantum 140 modules prior to dispatch:

• Visual & mechanical inspection: PCB condition, connector pin integrity, capacitor health, conformal coating assessment
• Powered functional test: Each module is seated in a live Quantum 140 test rack running Unity Pro diagnostics. CPU modules undergo full memory read/write cycle verification and communication port loopback testing.
• Analog channel calibration: All analog I/O modules (including 140AVO02000) are tested across the full output/input range with calibrated reference instruments traceable to national standards. Channel-to-channel isolation is verified at rated voltage.
• Burn-in screening: High-value CPU and communication modules undergo 48-hour powered burn-in at elevated ambient temperature to screen for infant mortality failures.
• Final documentation: Test data sheet issued per module, including channel-level pass/fail results, firmware version recorded, and technician sign-off.