Product Details

The Schneider 140CPU53414BC conformal coated processor module is a high-reliability B-version core control unit of Modicon Quantum PLC automation platform, designed for large industrial process control applications in humid, dusty and corrosive environments. This modicon quantum cpu module adopts 586 processor running at 100MHz clock frequency and integrates built-in floating-point coprocessor to deliver high-speed mathematical operations and PID closed-loop control algorithm execution. The PCB circuit board is coated with Humiseal 1A33 conformal coating, which effectively protects internal electronic components against moisture, dust and corrosive gas, ensuring stable continuous operation in chemical plants, offshore platforms and other severe industrial sites. It is equipped with 2972kB battery-backed RAM for program and data storage, supporting LL984 ladder logic and IEC61131-3 standard programming languages. The scan time for 1K boolean LL984 instructions ranges from 0.1ms to 0.5ms, suitable for heavy-duty automation tasks. The B version features dedicated flash executive firmware; hot standby redundancy must use two matched B-version CPUs, and it cannot be mixed with A version or original non-A version CPUs. It integrates two RS232 Modbus serial ports and one Modbus Plus communication port, supporting data exchange with local I/O modules, S908 remote I/O stations, distributed I/O, HMI touch screens and other field automation equipment. It can support up to 64 local I/O words, 64 remote I/O words and 30/32 distributed I/O words, supporting up to 31 remote drops and 63 distributed drops on Modbus Plus network. A fixed 250ms hardware watchdog timer is configured to detect abnormal program execution and trigger safety protection actions automatically. The onboard lithium battery retains RAM data and real-time clock information, with clock drift of ±8 seconds per day within 0~60℃ operating temperature range, and the lithium battery service life can reach up to 10 years. Programming can be completed via ProWORX 32 or Concept software platform, supporting firmware upgrade to Unity Pro. It can be directly plugged into Quantum backplane rack and cooperate with full series of Quantum power supply, I/O and communication modules to build complete distributed control systems. This original Schneider product was discontinued on May 31,2015 and end-of-service on Dec 31,2025, widely stocked as spare replacement parts for maintenance and upgrade of legacy industrial automation systems. It is widely used in power, petrochemical, natural gas pipeline, metallurgy, water treatment and manufacturing plants as the core controller for large Modicon Quantum automation racks requiring high-speed floating-point and PID process control under harsh industrial environments.

Brand: Schneider Electric

Model: 140CPU53414BC

Series: Modicon Quantum

Type: Conformal Coated PLC Processor Module

Processor: 586, 100MHz with floating-point coprocessor

Memory: 2972kB battery-backed RAM

Communication: 2 x RS232 Modbus,1 x Modbus Plus

Watchdog: 250ms hardware watchdog

Program Software: ProWORX 32, Concept, upgradable to Unity Pro

Feature: Humiseal 1A33 conformal coating, B version flash firmware, hot standby requires matched B CPU

Mounting: Plug into Modicon Quantum rack backplane

Operating Temperature: 0℃ ~ 60℃

Weight: 0.85kg

Status: Discontinued original spare part,end-of-service 2025

Certification: CE,FM Class 1 Division 2,cUL

Application: Core control processor for large Modicon Quantum PLC racks in harsh industrial sites