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Wednesday, January 16, 2019
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EMC/EMI Filter Question
Does an EMC/EMI filter go before the VFD or after the VFD?
By Kevin Flora on 10 January, 2019 - 9:58 pm

Does an EMC/EMI filter, like https://www.valinonline.com/products/508-110, go before the VFD or after the VFD on the cable that goes to the spindle? Also, if I use a filter on the output side of the VFD, would this protect both the VFD and the motor?

regardless of manufacturer EMC/EMI are used in the input side of VFD. Mainly to decrease high frequency interference from both supply side & VFD side to interact with normal operation.