Technical Parameters Basic Information Brand: ALSTOM / Converteam Part Number: CDG11AF14SACH Form Factor: Standard 3U slide-in rack pluggable signal acquisition module Matching peripheral boards: MVTU/MVTT traction master control CPU, MVAJ/MVAX/MVUA high voltage auxiliary power supply, MCND series IGBT gate drive boards, MCAA/TRVC/P127 TCMS communication gateway boards, MMLB/MMLG digital I/O expansion boards Application: European urban metro & light rail medium-power traction converter, real-time monitoring of power electrical parameters and high-voltage safety interlock signal processing Control Power Supply Rated operating voltage: DC 24V vehicle control power Operating voltage range: 18 VDC ~ 30 VDC Max power consumption: 9.5 W Protection circuit: Reverse polarity blocking diode, multi-stage TVS surge absorption filter, input overcurrent fuse, undervoltage lockout protection Analog Sampling Channels & Performance Galvanically isolated DC-link high voltage sampling Real-time bus voltage monitoring for overvoltage, undervoltage and pre-charge state judgment; high insulation withstand voltage between primary and secondary sides to isolate high-voltage interference Isolated three-phase AC current sampling Inverter traction output current and regenerative braking current closed-loop detection, matched with high-precision current transformers Multi-channel 4–20mA analog temperature inputs Traction motor winding temperature, IGBT power module temperature, cooling medium temperature, braking resistor temperature, cabinet ambient temperature Circuit anti-interference design Independent multi-stage RC EMI filter for each analog channel to suppress high-frequency switching noise generated by IGBT power stages; built-in temperature compensation circuit and low-drift high-resolution ADC, ensuring stable sampling accuracy under -25℃ ~ +70℃ wide temperature range Hardware Safety Interlock Digital Inputs 12-channel opto-isolated DC24V safety chain input terminals Cabinet high-voltage access door interlock loop, vehicle emergency stop circuit, cooling system fault feedback, high-voltage earthing switch state, pre-charge completion signal, cabinet over-temperature alarm signal Independent hardware interlock logic circuit Microsecond-level fast blocking trigger signal output to IGBT gate drive boards once the safety chain is disconnected; protection action runs independently without relying on master CPU software operation to avoid power module burnout Internal Rack Communication High-speed proprietary backplane bus realizes bidirectional real-time data interaction with traction master CPU: upload calibrated voltage, current, temperature sampling values and interlock fault flag signals; receive synchronous clock signals issued by the master control board to realize multi-board sampling synchronization. Mechanical Specifications Overall dimension: H130 mm × W98 mm × D220 mm PCB protection: Full acrylic conformal coating, anti-moisture, anti-corrosion, anti-dust, anti-mold Front panel LED indicators: Power OK, Sampling Running, Safety Interlock Fault, Rack Bus Communication Loss, Analog Channel Abnormality Alarm Fastening structure: Anti-looseness lock buckle, ensuring stable electrical contact under long-term vehicle running vibration and shock Railway Environmental & EU EN Compliance Operating ambient temperature: -25 ℃ ~ +70 ℃ Storage & transport temperature: -40 ℃ ~ +85 ℃ Relative humidity: 5% ~ 95% non-condensing Vibration test standard: IEC 61373 railway rolling stock Shock resistance: 12g half-sine wave impact test EMC standard: EN 50121-3-2 railway vehicle electromagnetic compatibility Fire safety grade: EN 45545-2 HL2 low smoke, low toxicity flame retardant material