Created Date: May 25,2017

Created By: mwdkmpr

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I have a site that has five GS2-4010 VFDs. I am controlling them using MODBUS RTU from a Domore through a FA-ISOCON. Two of the drives were installed about a year ago and three of them, in a separate enclosure, were installed three months ago. All have been working fine until about a month ago when all five drives reset to factory default. I put all of the parameters back in and it worked for about a day and then all five reset again. I removed the keypads and it worked about two weeks before the two oldest ones reset. I changed one of the drives to discrete and removed the RTU connection and it still reset. A week ago I changed one of the drives to a Schneider and it has been working but one of the GS2s reset once and all four reset one other time. I just changed out another GS2 with a Schneider this morning. Tech says that they have never heard of this. Has anyone else had a similar problem?