Thread: Lenze i500 Inverter
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20-04-2017 #1
Lenze's new VFD at our paper plant trips on earth fault immediately on receiving a start command. It happens even when no motor and leads are connected. What could be the reason for tripping? Would adding a ground fault sensor help?
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20-04-2017 #2
The drive probably has Internal EMC filter which will need disconnecting. Probably Screw on the side but the manual should tell you.
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20-04-2017 #3
there are 2 options not to open it.
1 use higher protection current 500mA
2 connect before protection device if possible
reason as jazzcnc mentioned EMC filter
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