Sinamics v90 pn error

Hello,

A52901 indicates that the capacity of the internal braking resistor has reached the threshold of p29005. If you are using an external braking resistor you can deactivate this with help of p29360, see the following entry V1.02.00.
https://support.industry.siemens.com/cs/ww/en/view/109746210

A52901 is just an alarm, it doesn`t affect the drive. Please make sure that no other faults are active on the drive or the PLC doesn`t stop due to the alarm A52901.

Hello,

please check that the line supply voltage in p29006 is set according to the actual line supply voltage.

I don`t know of a DC link controller functionality on the V90, and I couldn`t find any DC link controller parameters in the parameter list of the V90 operating instructions manual.

If the drive triggers immediately F30002 when decelerating the maximum braking power of the resistor is exceeded by the regenerative energy of the system. You have to decrease the braking power i.e. by extending the deceleration times. If the fault is triggered later during constant braking, check that the braking resistor can dissipate the braking energy of your application, maybe the thermal limits of the resistor are reached.

 

Hello,

the supply voltage is influencing the internal thresholds concerning the DC voltage.
It doesn`t affect the motor parameters.