The inverter power supply is incorrect or the fuse is blown. Schneider 630 inverter brand said that the Schneider 630 inverter will not report the field bus error when the power supply of the inverter is correct. Fieldbus error description is caused by inverter power error or fuse blown, which needs to be adjusted or repaired in time. Schneider inverter, known as Schneider AC Inverter, is a well-known inverter brand developed, manufactured and sold by Schneider Electric Group.