Ansaldo L324120010 是一款由 Ansaldo STS（现为 Hitachi Rail STS）生产的编码器模块，型号全称为 L324120010 L32412 0010 ED.4，主要用于轨道交通信号系统中的列车自动防护（ATP）与列车自动运行（ATO）控制，实现对列车位置、速度和方向的高精度检测。
一、核心功能与技术特性设备类型：旋转编码器模块（Master Encoder）
供电电压：10–36 V DC，适应轨道交通车载设备宽压输入需求
分辨率：180位高精度输出，支持多圈计数，确保长距离运行中位置不丢失
信号输出：
提供增量式脉冲信号（A/B/Z相），用于速度与位移计算；
支持与列车控制系统（如 CBTC）对接，实现闭环控制。
工作环境：
设计符合 EN 50155 铁路电子设备标准，适用于振动、冲击、温湿度变化大的运行环境；
工作温度范围：-40°C 至 +70°C；
防护等级高，抗电磁干扰（EMI）能力强。
二、系统集成与应用场景该编码器广泛应用于城市轨道交通与干线铁路的列车控制子系统中：
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