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FBM203电缆P0916DC
这是一个更加有力和复杂的过程,需要专业知识来执行。以下是对VFD进行故障排除以内部故障的分步说明。
静态测试
测试整流电路
在变频驱动器内,找到连接到直流电源的 N 和 P 端子。将万用表调整到 X10 电阻的刻度。将万用表的红色电缆连接到端子 P,将黑色电缆连接到端子 R、S 和 T。
这些端子中的电阻应相等且以数十为单位。交换万用表端子电缆连接,其中黑色现在按该顺序转到端子 P,红色变为 R、S 和 T。现在阻力应该是没有。将红色万用表电缆连接到直流电源 N 端子并重复上述操作。结果应该是相同的。
如果结果如下,则VFD电路功能异常:
三相电阻不平衡意味着桥式整流器失效。
如果在万用表的红色电缆连接到端子P的过程中,万用表显示电阻值,则桥式整流器或系统启动电阻失效。
GE Fanuc VELOCITY CONTROL UNIT A06B-6050-H001
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