773E, 773F, 775F, 777E, and 777F Off-Highway Truck Brake Electronic Control System Caterpillar


Electronic Control Module (ECM)

Usage:

773E DJS



图 1g00554751

电子控制模块(ECM)




图 2g00556522

与 ECM 配对的机器线束接头 J1 和 J2。

制动器 ECM 基于来自 ECM 输入的信息和存储器的信息做出决定。 制动器 ECM 接收到输入设备以及存储器送来的信息后,会通过输出设备发送一个相应的响应。 制动器 ECM 的 ECM 输入和输出通过两个 70 针接头(J1 和 J2)连接至机器线束。

注: 请参阅本手册测试和调整, "系统原理图"小节中 ECM 上接头触点的说明。

输入

机器有几个输入设备。 制动器 ECM 接收部件送来的机器运转相关信息。 机器使用开关输入和传感器输入。 开关向 ECM 的开关输入设备提供信号。 开关的可能输出如下所示:开路信号, 接地信号 和 蓄电池正极信号。 传感器向 ECM 提供频率或工作循环可能出现变化的信号。

输出结果

制动器 ECM 通过输出发送电气信号。 输出可以产生一个动作或者向其他 ECM 提供信息。

输入/输出

各 ECM 使用 Cat 数据链路相互进行通信。 数据链路是双向的。 ECM 可以通过数据链路接收信息。 ECM 可以通过数据链路发送信息。 数据链路允许与其他 ECM 共享信息。

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