Hello to everyone, a Siemens inverter Sinamics g120c just replaced an old danfoss. Macro 18 is used for commissioning meaning two DI (pin5 & 6 ) for forward and reverse motor rotation. External power supply. Everything is working great except: ones in a while (especially at the startup) when the plc gives the forward command the motor rotates in reverse rotation!!!!! Really really weird. Happened to someone before? Any ideas? Thanks in advance. (already reset all parameters through Bop panel and re-commission)

Thanks for your reply. Already tried and still the problem remains.