Technical Parameters Basic Info Brand: Alstom / Converteam Model: AC8102 CPU Module Series: AC8100 rack automation controller Application: Metro/EMU traction cabinet, marine drive, substation logic control Form factor: Standard 3U plug-in rack card Power Supply Module operating voltage: DC 24V Input range: 18–30 VDC Power consumption: Max 12W Protection: Reverse polarity, overcurrent, transient surge suppression CPU Performance Real-time scan cycle: 0.5ms ~ 10ms configurable Program memory: 1MB flash non-volatile memory Data register memory: 256K word retain memory Supported programming languages: Ladder Diagram, FBD, Structured Text Fault storage: Onboard flash stores 1000+ timestamped fault records Onboard Communication Interfaces Internal backplane bus: High-speed proprietary bus for I/O card data exchange RS232 front port: Local programming, parameter download & debug Isolated RS485 rear port: Modbus RTU, Alstom traction dedicated protocol Expansion slot: Optional CAN / Ethernet communication daughter board Indication & Diagnosis Front panel LED indicators: Power, Run, Fault, Communication Status Hardware self-diagnosis for bus error, memory fault, watchdog trip Mechanical Specs Dimensions: H130 mm × W25 mm × D220 mm PCB protection: Full acrylic conformal coating, anti-moisture & anti-corrosion Mounting: Plug into 4/8/12-slot AC8100 19-inch rack backplane Environmental & Railway Standards Operating temperature: -25 ℃ ~ +70 ℃ Storage temperature: -40 ℃ ~ +85 ℃ Humidity: 5%–95% non-condensing Vibration compliance: IEC 61373 rolling stock standard Shock resistance: 12g half-sine impact EMC: EN 50121-3-2 railway vehicle electromagnetic immunity Certifications: CE, RoHS compliant