Technical Parameters Basic Information Brand: Alstom / Converteam Product Type: Modular rack-mounted industrial PLC system Typical Application: Railway traction control, marine propulsion, power plant auxiliary control, substation automation Architecture: Backplane rack + hot-pluggable modular cards (CPU, DI/DO, AI/AO, communication, power supply) Power Supply Specs Standard module supply: DC 24 V Input voltage range: 18–30 VDC Rack power module capacity: 150W / 300W optional Built-in protection: Overvoltage, overcurrent, reverse polarity, short-circuit auto shutdown CPU Core Performance Real-time control cycle: 1~10ms configurable Program memory: 128K / 512K / 1M word optional Data memory: 64K–256K register storage Logic language: Ladder Diagram, Function Block, Structured Text Onboard storage: Non-volatile memory, retain program & parameters after power loss I/O Module Specifications Digital I/O DI module: DC24V isolated input, 16/32 channels per card DO module: Transistor / relay output, 16/32 channels per card Relay contact rating: 5A 250VAC, 3A 110VDC Analog I/O AI: 4–20mA / 0–10V, 12-bit resolution, 8/16 channels per card AO: 4–20mA / 0–10V analog output, isolated design Max expandable I/O points: Up to 1024 digital + 256 analog per rack Communication Interfaces Internal rack bus: GEM proprietary high-speed backplane bus Serial ports: RS232 (local programming), isolated RS485 Supported protocols: Modbus RTU, Alstom proprietary traction bus Optional Ethernet module: TCP/IP for SCADA upper computer connection Mechanical Structure Rack standard: 19-inch cabinet mount, multiple slot racks (4/8/12 slots) Card size: 3U plug-in module Cooling: Natural convection / optional forced fan cooling PCB protection: Full conformal coating for railway/marine damp environment Overall dimension: Depends on slot quantity; single card H130 × W25 × D220 mm Environmental & Railway Compliance Operating temperature: -25 ℃ ~ +70 ℃ Storage temperature: -40 ℃ ~ +85 ℃ Relative humidity: 5%–95% non-condensing Vibration standard: IEC 61373 (railway rolling stock) Shock resistance: 12g half-sine impact EMC: EN 50121-3-2 railway vehicle electromagnetic compatibility Certification: CE, RoHS, marine classification approval optional