For the Degree of protection of ATV312HD11N4 there are 3 values of IP (41,31,20) , what is the difference ?
As default the ATV312 drives are supplied as
a)IP41 for three phase drives, which power supply and motor terminals are provided in bottom side of the drive (OR)
b)IP31 for single phase drives, which the power supply terminals are provided in the top.
c)The drive will become IP20, if we remove the top protective cover(like sticker in low rating drives) provided in the drive to avoid foreign particles entry into the drive from top side.