Hello,

I commissioned NXG Pro drive at customer factory and it ran without problems till December. I found defective Profibus card and after I exchange it I cannot run the drive. It shows no fault, no alarm and it is possible to run, nor in automatic, nor in hand mode. I checked also all fault and alarm flags in debug tool, there are all in 0. Drive only shows "TRIP" in MODE line on display. What does it mean? It is TRIP fault, described in manual? In control manual there is no TRIP message in list for MODE line.

Drive is controlled via Profibus from Simatic (Speed demand, Start and Stop). There is second drive, also controlled via same Profibus line and it runs good. No BF or SF faults on CPU, and I hope same control sequence for both drives.

Thank you for any idea

With regards

It is always needed during first commissioning to run this tet once just to chech if the medium voltage CB is working properly if the drive send the command OFF to that CB.

More information you will find in the attached document: "NXGpro Introductory note 4 V2 - TRIP status".

Probably the second problem in your case is that the drive does not remember that this test had been once already during first commissioning (to replace the PROFIBUS card you had to switch off the control supply and the settings on CF are gone). It is a known firmware bug. In that case you need to orfer new CF card with FW6.3 from US.

Thank you very much for your help, Motorek! After your recommendation I succeeded to start the drive after successful test of input breaker.

During commissioning I didn't proceed this test. It was my first commissioning of NXG Pro drive, I didn't know about this test. And the drive at the time of commissioning didn't ask for this test, although it has Drive Has Input Breaker parameter set to Yes.

I have to ask support for new version of software to fix this bug.

Thank you very much

With best regards