Technical Specifications Basic Identification Brand: Alstom / Converteam Full Part No.: 029.144 470/029 Compatible Series: ALSPA P320, Microrec automation platform Product Type: Backplane Serial Communication Interface PCB Card Application: Power substation automation, railway traction control system, generator unit monitoring, MV switchgear bay signal interconnection Power Supply Electrical Parameters Rated Operating Voltage: DC 24V industrial standard Working Voltage Tolerance: 18 ~ 30 VDC Max Board Power Consumption: 14 W Overvoltage Protection: Built-in TVS transient suppression, withstand ±2kV surge pulse Power Isolation: 2kVAC dielectric isolation between power circuit and signal circuit Signal & Communication Interface Analog Signal Channels: 8-channel 4~20mA / 0~10V sensor signal input ADC Sampling Precision: 16-bit high precision conversion Digital I/O Terminals: 12-channel DC24V digital input for equipment status feedback 6-channel transistor digital output for interlock drive & alarm trigger Backplane Communication Bus: Alstom proprietary internal serial bus External Terminal Interface: Screw-clamp front terminal block for field wiring Diagnostic Indicators: Power ON LED, Link Status LED, Fault Alarm LED Mechanical & Installation Mounting Method: Standard 3U rack slide-in pluggable card Connection Mode: Rear gold-plated edge connector for backplane bus interconnection PCB Protection: Acrylic full conformal coating, anti-moisture, anti-condensation, anti-dust Overall Dimensions: H 132 mm × W 105 mm × D 220 mm Net Weight: 0.75 kg Fixing: Front panel locking buckle for anti-loosening during long-term vibration operation Environmental & Anti-Interference Performance Operating Ambient Temperature: -25 ℃ ~ +70 ℃ Storage & Transport Temperature: -40 ℃ ~ +85 ℃ Relative Humidity: 5% ~ 95% non-condensing Vibration Standard: IEC 60255-21-1 substation equipment vibration test Shock Resistance: 12g half-sine impact load EMC Compliance: IEC 61000-6-2 industrial electromagnetic immunity standard Pollution Degree: PD2, Overvoltage Category III