Schneider 140CPU67160R Modicon Quantum Hot Standby CPU Unit

Module Feature

140CPU67160R is the refurbished / repaired variant of Schneider 140CPU67160 Unity hot standby CPU for Modicon Quantum PLC platform.

It runs Unity control firmware, designed for redundant hot standby configuration. Processor clock 266 MHz, internal program memory 1024 kB. Integrated multi-mode Ethernet port, Modbus Plus communication interface, front LCD panel and operation keys. It supports S908 remote I/O, Quantum Ethernet RIO, event logging and fault diagnosis. Redundancy sync link ensures bumpless switchover between primary and standby CPU. PCMCIA memory card slot for program backup and recipe storage. Widely stocked as maintenance spare for power plant, refinery and process skid control cabinet.

Working principle

Primary CPU executes logic program, scans I/O and controls field equipment continuously.

Real-time data and logic state are synchronized to standby CPU via dedicated redundancy link. If primary CPU fails, standby takes over control automatically without process shutdown. It exchanges data with remote I/O racks and SCADA system over Ethernet or Modbus Plus. The front LCD displays run status, fault codes, network and I/O diagnostic information.

Onboard components

Main processing core, flash memory, RAM, Ethernet transceiver, Modbus Plus interface, redundancy sync circuit, LCD display panel, function push buttons, status LED bank, PCMCIA card slot, backplane connector and metal rack housing.

LED indicators

Front LEDs: Run, Fault, Ready, Redundancy Active, Comm.

Hardware self‑diagnosis

Built-in supervision detects backplane communication failure, memory error, network interruption, sync link break and I/O fault. Programming and fault analysis are completed by Schneider Unity Pro software.

Programming softwareUnity Pro, used for logic programming, redundancy configuration, remote I/O mapping, network parameter setup and fault log reading.

Electrical & Process Parameters

Model:140CPU67160R Brand:Schneider Electric Device type:Modicon Quantum hot standby PLC processor Function:Logic control, redundant operation, I/O management and communication for Quantum automation system

Mechanical & Structure

Mounting:19 inch rack slot mount inside Quantum backplane Protection class:IP20 Housing:Metal rack module

Environmental

Operating temperature:0℃ ~ +60℃ Storage temperature:-40℃ ~ +85℃ Ambient humidity:5~95% non‑condensing

Certification:CE, UL Status:Discontinued refurbished spare

Installation

Cut off rack power before replacement.

Insert CPU to Quantum backplane, connect redundancy sync cable, Ethernet and Modbus Plus wiring, download Unity project configuration, test primary/standby switchover and remote I/O communication after commissioning.

Interface

Quantum backplane connector, multi-mode Ethernet port, Modbus Plus terminal, redundancy sync port, PCMCIA slot.

Diagnostic

Redundancy sync fault: Sync cable damaged, CPU firmware version mismatch. No run: Configuration missing, backplane fault, no I/O permission. Comm loss: Ethernet IP conflict, network switch failure.

Product Brief140CPU67160R CPU, Schneider Modicon Quantum hot standby processor spare for process PLC redundant cabinet replacement.