Technical Parameters Basic Information Brand: Alstom Converteam Part Number: M57121021001C Form Factor: Standard 3U slide-in rack pluggable module Matching devices: EP3/EPIC traction main control board, KCEG series IGBT gate drive boards, KBCH/MAVS high voltage auxiliary power supply Application: European metro, light rail traction converter real-time monitoring and safety interlock control Control Power Supply Rated working voltage: DC 24V vehicle control power Operating voltage range: 18 VDC ~ 30 VDC Maximum power consumption: 9.8 W Protection design: Reverse polarity protection diode, TVS surge absorption circuit, input overcurrent fuse Analog Sampling Function Channels Multi-channel 4–20mA temperature input: IGBT power module temperature, traction motor winding temperature, cooling system temperature detection Isolated DC-link high voltage sampling: Real-time bus voltage monitoring for inverter closed-loop control Galvanically isolated current sampling: Inverter three-phase output current, braking loop current signal collection Built-in multi-stage RC filter circuit: Suppress high-frequency switching noise generated by IGBT power stage Digital Safety Interlock Inputs 12-channel isolated DC24V digital input: Cabinet safety door contact, emergency stop signal, cooling fan fault, earthing switch state feedback Independent hardware interlock logic: Once the safety loop is disconnected, immediately output hardware blocking signal to gate drive board, independent of main CPU software logic Onboard Communication High-speed proprietary rack backplane bus, bidirectional data transmission: upload real-time voltage/current/temperature sampling values and interlock status to master CPU, receive control synchronous clock signals from main control board. Mechanical Specifications Overall dimensions: H130 mm × W98 mm × D220 mm PCB protection: Full acrylic conformal coating, anti-moisture, anti-corrosion, anti-dust and anti-mold Front panel LED indicators: Power OK, Sampling Running, Safety Interlock Fault, Communication Abnormality Fastening structure: Anti-loose lock buckle, maintain stable contact under long-term vehicle vibration operation 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