SEW MOVIDRIVE on Weiler Cutting Machine


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We have a Weiler cutting machine with SEW mdx61b0040-5a3-4-0t Inverter. Every time while starting it shows F03 error and after repeated switch offs it comes to normal. Sometimes instead of coming to normal it shows indication as 1 in its display as it indicates CONTROLLER INHIBIT message. and this F03 indicates ground fault. Checked the cables but didn't find anything unusual.

Please advice....