Kinetix 6000 shows low DC voltage in RSLogix

Gents,

The following problem:
I measure a stable 615 VDC on the IAM, but all drives shows a voltage between about 250 VDC and 350 VDC in RSLogix at "drivename".DCvoltage.

Can anyone point me to the cause or sollution of this problem?

Thanks in advance!

Unless the bus voltage is above 600 VDC the LIM shows an error code E09 now...