Product Overview
The 140CPU11303C is a processor module from Schneider Electric’s Modicon Quantum automation platform. Built around an 80186 processor running at 20 MHz, it delivers dependable control for industrial automation systems. With 368 KB of internal RAM, this module handles complex processing tasks across oil, gas, and manufacturing environments. The 140CPU11303C supports both local and distributed I/O, making it a practical choice for facilities that need a proven processor with broad connectivity.
Technical Specifications
The 140CPU11303C combines processing power with flexible I/O handling. Its 80186 processor and 20 MHz clock frequency provide consistent scan performance for LL984 logic, with an execution time of 0.3 to 1.4 ms per 1 K instruction. The 368 KB internal RAM supports program storage and data handling without external memory modules.
A built-in watchdog timer set to 250 ms monitors system stability, while clock drift stays within ±8 seconds per day across the 0 to 60°C operating range. The module manages up to 64 input and 64 output words locally or remotely, plus 30 input and 32 output words distributed. For larger networks, it supports 500 input and 500 output words per network.
Connectivity includes one Modbus Plus port and one Modbus RS232 port. The processor accommodates up to 31 remote drops across two remote networks and three distributed networks. A lithium battery with 1.2 Ah capacity provides approximately 10 years of backup life at currents between 7 µA and 210 µA.
Key Parameters
| Specification | Value |
|---|---|
| Processor | 80186 |
| Clock Frequency | 20 MHz |
| Internal RAM | 368 KB |
| Watchdog Timer | 250 ms |
| I/O Words (Local/Remote) | 64 I / 64 O |
| I/O Words (Distributed) | 30 I / 32 O |
| I/O Words per Network | 500 I / 500 O |
| Remote Drops | 31 |
| Networks | 3 distributed, 2 remote |
| Ports | 1 Modbus Plus, 1 Modbus RS232 |
| Battery | Lithium, 1.2 Ah, 10-year life |
| Bus Current | 790 mA |
| Operating Temperature | 0 to 60°C |
| Weight | 0.3 kg |
Industrial Applications
The 140CPU11303C fits naturally into oil and gas operations where Modbus Plus networks already exist. In a pipeline monitoring station, its 31 remote drop capacity lets operators connect flow meters, pressure transmitters, and valve controllers across a wide geographic area. The distributed I/O support handles 500 words per network, so expanding a facility does not require replacing the processor.
Water treatment plants also benefit from the module’s conformal coating, which protects against humidity up to 95% without condensation. The 140CPU11303C operates reliably in environments where moisture and temperature fluctuations are common. For manufacturing lines running Concept or ProWORX 32 software, this processor integrates directly into existing Quantum racks without adaptation.
Integration and Compatibility
The 140CPU11303C works with Schneider Electric’s Modicon Quantum platform and supports Concept and ProWORX 32 programming software. Communication module processor capacity includes two NOM, NOE, CR, and NMS modules, giving engineers room to add networking options as needs grow.
When wiring into Modbus Plus or RS232 networks, confirm cable types and any required gateways with your supplier. The module carries CE marking and meets UL 508 and CSA C22.2 No 142 standards. It also holds cUL and FM Class 1 Division 2 certifications for hazardous locations.
Maintenance and Reliability
The lithium battery is the primary wear item. With a 10-year life expectancy, plan replacement well before the decade mark to avoid memory loss during power interruptions. The watchdog timer and clock drift specification give maintenance teams clear benchmarks for verifying processor health.
Periodic inspection of the Modbus Plus and RS232 connections helps prevent communication faults. The conformal coating (Humiseal 1A33) protects internal components from environmental contaminants, but visual checks for dust buildup remain worthwhile. The 140CPU11303C operates at altitudes up to 5000 m and withstands electrostatic discharge up to 4 kV contact and 8 kV air per IEC 801-2.
Please verify current lifecycle status and availability with Oil AutoTech before ordering.
Why Choose Oil AutoTech
Oil AutoTech supplies ready-to-ship industrial automation spares for oil, gas, and manufacturing operations. Our team offers hands-on technical selection help to match the right processor to your existing Quantum system. Contact Oil AutoTech today for pricing and availability.
