Hi, heres one for the drives experts:
My VFD (Siemens MM430) generates a fault at startup (F002 - Overvoltage). The fault does not happen every time, only approx every second startup.
The application is a large balanced vibating conveyor with two drive stations. The conveyor is agitated by the motors directly via excentric shafts (hope you understand what I mean).
I think that the fault is caused by the motors who generate the overvoltage when the conveyor/motors alternates between driving/regenerating during the very initial movements.
Are there any setings that can help avoiding this fault ?
The VFD is not equipped with a braking resistor. Would it help if a braking resistor is installed ?
NB: Stopping is done with coast-to-stop. Thats why braking resistor was thought not to be necessary.
My VFD (Siemens MM430) generates a fault at startup (F002 - Overvoltage). The fault does not happen every time, only approx every second startup.
The application is a large balanced vibating conveyor with two drive stations. The conveyor is agitated by the motors directly via excentric shafts (hope you understand what I mean).
I think that the fault is caused by the motors who generate the overvoltage when the conveyor/motors alternates between driving/regenerating during the very initial movements.
Are there any setings that can help avoiding this fault ?
The VFD is not equipped with a braking resistor. Would it help if a braking resistor is installed ?
NB: Stopping is done with coast-to-stop. Thats why braking resistor was thought not to be necessary.
Last edited: