320 GC, 320 and 323 Excavators Tool Control System Caterpillar


Solenoid Valve (Proportional Reducing) - Calibrate - High Pressure Line) (Attachment Valves #1, #2, #4

Usage:

320 GC BR4

简介

A1 和 A2 附件阀的比例减压阀位于主控制阀的两端。 比例减压阀将先导油压力发送至附件控制阀。 这些阀通过来自操作员输入的 PWM 信号控制,并通过机器 ECM 中继。

机器准备

  1. 执行标定前,必须完成以下程序。

    • 根据该机器的测试和调整, "安全阀(先导)- 测试和调整"中的技术规格,设置先导压力。

  2. 将机器停放在平地上并停止发动机。


    图 1g06217670
    作业机具高压油输送停止阀(典型示例)

  3. 关闭安装于斗杆每侧的停止阀,以防止在此步骤中机油流向作业机具。

  4. 释放液压系统压力。 请参阅测试和调整, "系统压力 - 释放".

  5. 起动发动机。

  6. 将机器控制装置设为以下设置:发动机转速旋钮 "7" 和 AEC 开关 OFF。 有关发动机转速设定,请参阅测试和调整, "发动机性能 - 测试(发动机转速)"。

  7. 升高液压油温度至 55° ± 5°C (131° ± 9°F)

标定步骤

注: 此步骤通常适用于所有附件控制比例减压阀。 伸出和缩回阀的控制输入不同。

使用图 2 中所示的下列任一电子控制输入标定 A1 和 A2 附件阀。



图 2g06237620
电子控制输入
(LJ) 左操纵手柄
(RJ) 右操纵手柄
(C) 指轮(向前)- "附件阀伸出压力"
(D) 指轮(向后)- "附件阀缩回压力"

监视器步骤

下述步骤将允许用户使用监视器标定比例减压阀。

  1. 从"设置"菜单中进入"维修"。 输入密码 "9992"。


    图 3g06217675

  2. 从 "Service(维修)"菜单中选择 "Calibrations(标定)"。


    图 4g06218948

  3. 从 "Calibrations(标定)"菜单中选择 "Attachment Valves(附件阀)"。


    图 5g06237568

  4. 选择"具有泵压力的附件阀"进行标定。

  5. 按确定键开始标定。 发动机转速将自动增加至发动机转速刻度盘 7 的同等值。

  6. 确认监视器显示屏上的备注。 按照说明设置测试条件。 按下确定键。

  7. 遵循监视器上的说明完成标定。

  8. 如果没有出现错误,则标定成功完成。

  9. 如果出现错误,监视器上将显示 "Error(错误)"屏幕。 标定流程将不会保存,并且流程必须重新开始。

Cat Electronic Technician 步骤

下述步骤将允许用户使用 Cat 电子技师来标定比例减压阀。



    图 6g06263318
    Cat 电子技师的诊断接头
    (1) 维修端口

  1. 将 Cat 电子技师连接至位于驾驶室左侧座椅后面的诊断接头。

  2. 起动 Cat Electronic Technician。


    图 7g06246627

  3. 选择"机具控制 #2" 的 ECM。


    图 8g06246872

  4. 从 "Service(维修)"菜单中选择 "Calibrations(标定)"。


    图 9g06247035

  5. 突出显示"电动液压阀标定",并点击屏幕左下角的"开始"按钮。


    图 10g06247041

  6. 选择标定并按下"开始"按钮。

  7. 遵循监视器上的说明完成标定。

  8. 如果没有出现错误,则标定完成。 按下 "Finish(完成)"按钮,退出或转至下一标定。

  9. 如果标定失败,将不保存标定。 按下 "Restart(重新开始)"按钮,尝试再次标定,或按下 "Finish(完成)"完成按钮,退出或转至下一标定。

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