Inovance CV800 Series, User Manual, Page: 22 / 37

Control manner is V/F
Torque magnification (F3-01) is too
large, gradually decrease the setting
value at 1.0% each time, or try to set
F3-01 as
“0” (automatic torque
magnification mode).
Fault name Panel display Troubleshooting Countermeasure
Motor
overload
Whether motor
protection parameters
F9-01 are proper S et this parameter correctly, increase
F9-01 to extend the motor overload
time.
Excessive load or motor
locked Reduce load and check motor and
mechanical conditions.
Abnormal
input voltage
R phase in input
voltage is open Check whether the three-phase
power supply is normal; check
whether the input wiring cable is
broken; whether the input wiring
terminals are connected; and check
the hardware voltage test circuit.
S phase in input voltage
is open
T phase in input voltage
is open
Input three phase
voltage is too high Adjust the three-phase voltage to
reasonable range.
Three phases of input
voltage are unbalanced Check whether the three-phase
power supply is normal;
check the
hardware voltage test circuit.
Output
phase open
Motor fault Check whether circuit of the motor is
open.
Leading wire between
inverter and motor is
faulted Eliminate peripheral faults.
Three phases of input
voltage are unbalanced
during motor running Check whether the motor
three-phase winding is normal and
complete troubleshooting.
Driver board or IGBT
module faulted Seek for technical support.
Module
overheating
Ambient temperature
too high Lower the ambient temperature.
Air duct blocked Clean the air duct.
Fan damaged Replace the fan.
Module thermal
resistance damaged
Seek for technical support.
Module damaged
Motor tuning
failure
Magnetic pole position
angle tuning failure of
synchronous motor
The motor is not connected or an
output phase is open.
Initial magnetic pole
position angle tuning
failure of synchronous
motor Increase set value of
“Synchronous
motor initial position angle detecting
current
” F2-29.
Stator resistance tuning
failure
The motor is not connected; confirm
that motor rated current parameter
(F1-03) has been set according to
motor nameplate.
Transient leakage
inductance tuning
failure of asynchronous
motor
The motor is not connected or an
output phase is open. Confirm that
motor is effectively connected.
Inertia tuning failure
Confirm that motor rated current
parameter (F1-03) has been set
according to motor nameplate.
Increase the set value of inertia
tuning and dynamic setting speed
(F2-43).
Tuning timeout
The motor is not connected or an
output phase is open; confirm that
the motor is off load.