4 Troubleshooting
- 42 -
Fault
Code
Fault Description
Possible Cause
Solution
Err06
Overvoltage during
deceleration
1) The overvoltage stall
prevention parameters
are set improperly.
2) An external force drives
the motor during deceler-
ation.
3) The deceleration time is
too short.
1) Check that the voltage limit func-
tion is enabled (F3-23 = 1). If the
setting of F3-22 (V/F voltage limit)
is too large, adjust it between 700
V and 770 V. If the setting of F3-24
(V/F frequency gain for voltage lim-
it) is too small, adjust it between
30 and 50.
2) Cancel the external force or install
a braking resistor.
3) Increase the deceleration time.
Err07
Overvoltage at
constant speed
1) The overvoltage stall
prevention parameters
are set improperly.
2) An external force drives
the motor during acceler-
ation.
3)
The input voltage fluctu
-
ates greatly in the field.
1) Check that the voltage limit func-
tion is enabled (F3-23 = 1). If the
setting of F3-22 (V/F voltage limit)
is too large, adjust it between 700
V and 770 V. If the setting of F3-24
(V/F frequency gain for voltage lim-
it) is too small, adjust it between
30 and 50.
If the setting of F3-26 (V/F fre-
quency rise threshold during
voltage limit) is too small. Adjust it
between 5 Hz and 20 Hz.
2) Cancel the external force.
3)
Adjust the input voltage fluctua
-
tion range to an allowed range.
Err09
Undervoltage
1) Instantaneous power
failure occurs.
2) The AC drive's input
voltage is not within the
allowable range.
3) The bus voltage is abnor-
mal.
4)
The rectifier bridge, snub
-
ber resistor, drive board,
or the control board is
abnormal.
1) Enable the power dip ride through
function (F9-59 ≠ 0).
2) Adjust the voltage to the normal
range.
3) Contact the agent or Inovance for
technical support.
4) Contact the agent or Inovance for
technical support.
