VFD overvoltage fault ? 3

[nmark]

Hello,
I have (2) vfd's controlling 2 motors(conveyors) with a input voltage of 460 volts in real life I measure 494 volts at the input. The drive manufacturer says voltage input in good for +10%. 460*1.10=506
But over the past 2 weeks both drive's have faulted on a overvoltage fault numerous times.The fault has occured when the drive is running at a constant speed. I do not have a line reactors or chokes installed.
Both of the drives, motors are new . In addition to the new conveyor motors at the other end of the plant are 2 new 1000HP 4160 volt compressors DOL starting. We are going to monitor the voltage for spikes etc.. later this week.But while I wait any suggestions?

 

[Sbortolo]

nMARK, You are not alone. I am currently getting the same issue with ours. Make sure the DB resistors have a good hookup and the braking module works. We did what you did until we could figure it out.