... -saving rate and multi-function; ZY-P800F Fan and pump series(0.75-450KW)With advanced functions of Time Period Control ... rotating mode of 1 drive controlling several pumps. ZY-P800F series are effectively applied on the field of fan and pump ... , over-voltage, over-current, AC drives over-load, motor over-load, over-heat, motor detection fault, external equipment fault, external disturbance, water ...