Schneider 140CPS11420 Modicon Quantum PLC Power Supply Module

140CPS11420 is an AC input rack power supply for Schneider Modicon Quantum PLC series, designed for industrial process control racks, produced by Schneider Electric. It converts universal 115/230VAC mains into stable 5.1VDC backplane power to feed CPU, communication and all I/O modules. This unit supports standalone operation or parallel summable redundant power expansion to boost total rack load capacity.

The module integrates full internal overvoltage, overload and short-circuit protection, with built-in EMI filtering to suppress grid noise. It is a discontinued legacy spare part, widely stocked for maintenance of power plant, petrochemical and metallurgy Quantum control cabinets, with recommended replacement model BMXCPS4002 for new X80 platforms.

Main Specifications

• Brand: Schneider Electric; Model: 140CPS11420; Series: Modicon Quantum PLC Rack System
• AC Input: 93~132VAC(115V) / 170~276VAC(230V), 47~63Hz, rated 130VA power rating
• DC Output: 5.1VDC; 11A single unit at 60℃, up to 20A when multiple units paralleled
• Protection: Built-in overvoltage, overcurrent, short-circuit auto shutdown; 2A slow-blow input fuse
• Environment: Operating temp -20℃ ~ +60℃; storage -40℃ ~ +85℃; humidity 5%~95% non-condensing, IP20 cabinet installation
• Core Feature: Summable parallel design for redundant high-load racks, internal noise suppression filter
• Installation: Standard Quantum rack plug-in module, DIN rail integrated rack mounting
• Status Indicator: Front panel power OK LED to display normal/abnormal supply status

Core Functions

• Convert industrial alternating mains to regulated 5.1VDC backplane power, supply stable power to Quantum CPU, analog/digital I/O and communication modules
• Parallel summable function: install multiple 140CPS11420 together to increase total output current for racks with dense I/O layout
• EMI filter circuit eliminates power grid harmonic and surge interference, prevent signal distortion of analog measurement modules
• Multi-layer hardware protection automatically cuts output power under overload, short-circuit or overvoltage to protect entire PLC rack components
• Front LED diagnostic indicator quickly judges power supply failure on-site, simplify troubleshooting of control cabinet power faults
• Support redundant power configuration, avoid full system shutdown caused by single power module breakdown for critical continuous production lines

Application Scenarios

• Thermal power plant boiler, turbine auxiliary Modicon Quantum PLC control rack main power matching replacement
• Petrochemical refinery, natural gas pipeline distributed process control cabinet power spare parts stock
• Metallurgical rolling mill, cement kiln large fan heavy-duty PLC rack power supply maintenance renovation
• Municipal water supply & sewage plant pump station Quantum PLC rack aging power module batch replacement
• Mining conveyor, hoist equipment safety control system redundant power backup configuration
• Energy, chemical heavy industry enterprises legacy Quantum automation system long-term spare parts inventory