Inovance MD500-PLUS Series - Page 711

Fault Codes
‑710‑
Fault Name Display Possible Cause Action
Overvoltage during
operation at
constant speed
E07.00 Inappropriate overvoltage
suppression
Ensure that overvoltage suppression (F3‑23) is
enabled.
If the value of F3‑22 (overvoltage suppression) is
too large, adjust it to a level between 700 V and
770 V.
If the value of F3‑24 (frequency gain for
overvoltage suppression) is too small, adjust it to
a level between 30 and 50.
External force driving the motor
during operation
Cancel the external force or install a braking
resistor.
If the value of F3‑26 (frequency rise threshold
during overvoltage suppression) is too small,
adjust it to a level between 5 Hz to 15 Hz when an
external force drives the motor.
Undervoltage E09.00 Instantaneous power failure Enable the power dip ride‑through function (F9‑
59).
AC drive input voltage out of
range
Adjust the voltage to a value within the normal
range.
Abnormal bus voltage Contact Inovance for technical support.
Abnormal rectifier, IGBT driver
board, or IGBT control board
Contact Inovance for technical support.
AC drive overload E10.00 Excessively heavy load or stalled
motor
Reduce the load and check the motor and
mechanical conditions.
Inadequate power rating of the
AC drive
Use an AC drive with a higher power rating.
Auto‑tuning is not performed in
SVC or FVC control mode.
Set motor parameters according to the motor
nameplate and perform motor auto‑tuning.
Excessively high torque boost
(F3‑01) in V/f control mode
Decrease the value of F3‑01 by 1.0% each time or
set F3‑01 to 0 (automatic torque boost).
Output phase loss on the AC
drive
Check the output wiring of the AC drive.
Motor overload E11.00 Inappropriate F9‑01 (motor
overload protection gain) setting.
Increase the value of F9‑01 to prolong the motor
overload time.
Excessively heavy load or stalled
motor
Reduce the load and check the motor and
mechanical conditions.
Input phase loss E12.00 Input phase loss Ensure proper input RST cables and three‑phase
input voltage.
Output phase loss E13.00 Motor fault Check whether the motor is disconnected.
Abnormal lead wire connecting
the AC drive to the motor
Rectify external faults.
Unbalanced three‑phase output
of the AC drive during motor
operation
Ensure proper functioning of the motor three‑
phase winding.
Abnormal driver board or IGBT Contact the agent or Inovance for technical
support.