Technical Parameters Basic Information Brand: ALSTOM / Converteam Part Number: TTM211/IP166 Form Factor: Standard 3U slide-in rack pluggable communication gateway module Matching peripheral boards: MVTU/MVTT traction master CPU, MVAJ/MVAX/MVUA high voltage auxiliary power supply, PRS12 series DC110V backup power, CDG11 analog sampling boards, AP5427A/AT315MR IGBT gate drive boards, MPA157 digital I/O safety board Application: European urban metro & light rail traction converter, isolated vehicle train bus communication, traction system and TCMS data interaction, remote fault diagnosis & status reporting Control Power Supply Rated operating voltage: DC 24V vehicle control power Operating voltage range: 18 VDC ~ 30 VDC Max power consumption: 7.5 W Input protection: Reverse polarity blocking diode, multi-stage TVS surge absorption filter, input overcurrent fuse, undervoltage lockout protection Dual Independent Communication Interfaces Internal Rack Backplane Interface Proprietary high-speed parallel bus connecting with traction master CPU, real-time bidirectional exchange of sampling values, drive status, safety interlock signals, fault logs and control instructions; galvanically isolated communication transceiver to avoid rack internal noise crosstalk. External Vehicle Bus Interface (IP166 Isolated Channel) Standard support: MVB train bus, isolated RS485 serial bus, 10/100M Ethernet IP communication Isolation grade: Reinforced insulation between traction side and vehicle train bus side to block ground loop & high-voltage transient interference Data function: Upload traction current, DC-link voltage, motor temperature, IGBT temperature, fault event records, operating state; download vehicle traction enable, regenerative braking permission, speed limitation, maintenance mode, reset command from TCMS/VCU. Onboard Storage & Diagnosis Function Non-volatile flash memory for long-term storage of fault timestamp, running waveform snapshot and equipment operation history data Local maintenance debug port for offline parameter calibration, program download and fault data export 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: 24V Logic Power OK, Rack Bus Communication Active, Vehicle Bus Link Normal, Data Transmit/Receive Flash, Communication Fault Alarm Fastening structure: Anti-looseness lock buckle, stable electrical contact under long-term vehicle running vibration and impact IP166 optimization: Enhanced EMC filter circuit for IP/Ethernet channel, wider temperature working range for underground tunnel harsh environment 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