Indicator Lamp (Inverter Active) - Check
变频器柜配有两个变频器启动指示灯，位于减速接触器腔室上方。 当直流电源母线上的电压大于 150.0 VDC 时，这两个指示灯点亮。 这两个指示灯的工作与钥匙起动开关的状态无关。
变频器启动指示灯作为直观辅助装置，用来指示直流电源母线的状态。 变频器启动指示灯并不设计用作直流电源母线已完成放电的绝对指示。 无论变频器启动指示灯的状态如何，在任意高电压系统部件上执行任何维修前，均必须手动测量确认直流电源母线电压低于 50.0 VDC。
通过执行以下程序来确认变频器启动指示灯的工作：
- 准备维修的机器。 请参阅操作和保养手册, "使机器作好保养准备"。
- 起动发动机。
- 踩下行车制动器踏板并且将换挡操纵杆移到 D 位置。
- 将换挡操纵杆移到 P 位置。
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图 1 g01942453 - 退出驾驶室并确认变频器启动指示灯 (1) 和 (2) 的工作。
- 如果两灯均不点亮，请联系您的 Caterpillar 代理商。
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