MODICON ALU202 PLC CPU Controller

Technical SpecificationsModel:ALU202 Brand:MODICON(AEG) Product Type:A120 Series PLC Central Processor Memory:12K words RAM Communication:1×RS232,1×RS485 Backplane Bus:Modicon A120 backplane Mounting:Backplane rack slot mount Operating temperature:0℃ ~ +60℃ Storage temperature:-20℃ ~ +70℃ Relative humidity:5%~95%, non-condensing Weight:1.0kg Dimension:260mm140mm30mm Protection:IP20

System compatibilityALU202 belongs to MODICON A120 series CPU processor. Compatible with A120 backplane and matching I/O modules. It can connect HMI and remote I/O via serial ports. Suitable for chemical plant,water treatment,packaging machinery,conveyor line old AEG Modicon PLC system renovation and replacement as industrial spare part.

FunctionALU202 A120 PLC central processor. It executes ladder logic program,cyclically scans field I/O signals and completes arithmetic & logic calculation. It supports 12K word user memory,uses backup battery to retain program and data during power loss. It handles RS232 and RS485 serial communication to exchange data with HMI,scanners and remote stations. Built-in hardware self-diagnosis,run status monitoring and fault alarm function. Widely used as core control unit for legacy AEG Modicon automation system, serving as reliable CPU spare part.

InstallationCut off rack power before installation. Insert ALU202 CPU module into MODICON A120 backplane slot and lock the card. Check gold finger contact condition. Connect RS232/RS485 communication cable. Download PLC program,configure I/O address and serial communication parameters,complete online running test before formal operation.

InterfaceBackplane bus connector,RS232 & RS485 serial ports,run/fault/battery status LED indicators for ALU202 MODICON CPU module.

FeatureMODICON ALU202 A120 CPU,12K RAM memory,dual serial communication ports,battery backup for data retention,hardware diagnostic LED,standard single slot rack design,industrial anti-interference design. This discontinued legacy industrial spare part used for old AEG MODICON A120 PLC system main control maintenance and replacement.

DiagnosticModule not recognized: check rack power supply,backplane contact and module insertion for ALU202. PLC fault alarm: inspect program error,memory fault and low backup battery voltage. Serial communication abnormal: check cable,baud rate,parity setting and shielding grounding. Program lost after power off: verify backup battery aging and connector contact. Intermittent offline: check backplane power stability and electromagnetic interference.

Product BriefALU202 is AEG MODICON A120 series PLC CPU controller. It runs user control logic,processes I/O signals and supports RS232/RS485 serial networking for legacy industrial automation equipment,classic spare part for legacy MODICON control system overhaul.

Disclaimer: All parameters are for reference only and shall not be used as the basis for quotation. Goods are scarce, overseas delivery lead time is 3-7 working days. It is only used for equipment maintenance and renovation.