Veichi SI23 Manual page 21

Over current at
E.oC3
constant speed
E.oL1
Motor overload
AC drive
E.oL2
overload
●The startup operation is
performed on the rotating
motor
●A sudden load is added
during acceleration
●The AC drive model is of
too small power class
●The output circuit is
grounded or short circuited
●Motor auto-tuning is not
performed
●The voltage is too low
●A sudden load is added
during operation
●The AC drive model is of
too small power class
●Boost torque is too big
under VF control
●ACC. and DEC. time is too
short
●Motor parameters setting is
improperly
●Restart motor which in
counter rotate
●The grid voltage is too lower
●Load is too big or motor
block load
●AC drive selected is too
load
●Boost torque is too big
under VF control
●ACC. and DEC. time is too
short
●Motor parameters setting is
improperly
●Restart motor which in
counter rotate
●The grid voltage is too lower
●Load is too big or motor
block load
●AC drive selected is too
load
20
SI23 Solar Pump VFD Manual
●Remove the added load.
●Select an AC drive of higher power
class
●Eliminate external faults
●Perform the motor auto tuning
●Adjust the voltage to normal range
●Remove the added load
●Select an AC drive of higher power
class
●Reduce boost torque
●Increase the ACC./DEC. time
●Reset motor parameters
●Reduce current limit and adopt
speed tracking
●Check grid voltage
●Check load condition
●Change bigger power AC drive
●Reduce boost torque
●increase the ACC./DEC. time
●reset motor parameters
●Reduce current limit and adopt
speed tracking
●Too check grid voltage
●Too check load
●change bigger power AC drive