Inovance MD290 Series - Troubleshooting During Trial Run; Fault Display

10. Troubleshooting
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10.2 Troubleshooting During Trial Run
This section provides solutions to oscillation, poor torque or speed response, or other problems that
occur while performing a trial run.
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Drive in V/F Control (F0-01 = 2)
It is applicable to application without an encoder for speed feedback. You need to set rated
motor voltage (F1-02) and rated motor frequency (F1-04) correctly.
Problem Solutions
Motor oscillation
during running
Increase the setting of F3-11 (V/F oscillation suppression gain) by 10
gradually. The permissible maximum setting here is 100.
Overcurrent during
start
Decrease the setting of F3-01 (torque boost) by 0.5% gradually.
Very large current
during running
1. Set rated motor voltage (F1-02) and rated motor frequency (F1-04)
correctly.
2. Decrease the setting of F3-01 (torque boost) by 0.5% gradually.
Too loud motor noise Increase the setting of F0-15 (carrier frequency) by 1.0 kHz gradually.
Note that increase in carrier frequency will result in an increase in the
leakage current of the motor.
Overvoltage detected
when heavy load is
suddenly removed or
during deceleration
1. Ensure that F3-23 (voltage limit selection) is set to 1 (enabled).
Increase the setting of F3-24/F3-25 (frequency gain/voltage gain for
voltage limit) by 10 gradually. The permissible maximum setting here is
100. The default value of F3-22 is 30.
2. Decrease the setting of F3-22 (voltage limit) by 10 V gradually. The
permissible minimum setting here is 700 V. The default value of F3-20
is 770 V.
Overcurrent detected
when heavy load is
suddenly added or
during acceleration
1. Increase the setting of F3-20 (current limit gain) by 10 gradually. The
permissible maximum setting here is 100. The default value of F3-22 is
20.
2. Decrease the setting of F3-18 (current limit level) by 10% gradually.
The permissible minimum setting here is 50%. The default value of
F3-18 is 150%.
10.3 Fault Display
When a fault occurs during running, the AC drive stops output immediately, the fault indicator
TUNE/TC
flashes, and contact of the fault relay acts. The operation panel displays the fault code such as
VKRZQLQWKHIROORZLQJ¿JXUH
MF.K
RUN
STOP
RES
QUICK
PRG ENTER
RUN
LOCAL / REMOT FED / REV TUNE / TC
RPM
%
AVHz
RUN indicator
Fault dispay
RUN
Stop/ Reset
Unit indicator
Tuning/Torque
control/Fault indicator