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Error
Condition
The motor run
is unstable
The motor's rpm
does not match
frequency.
The entered
parameters have
The saved
not been saved.
parameters are
not the same as
the parameters
that had been
The copy unit
entered.
parameter settings
have not been
copied to the
inverter.
The motor won't
start or stop and
also no set value
can be entered.
No data entries
can be made.
Parameters can
neither be set nor
changed.
The electronic
thermal pro-
tection is activa-
ted (trip E 05).
Important note for saving changed parameters:
After changed parameters have been saved with the STR key (when parameters are changed using the L100
digital operator) or with the COPY key (when parameters are copied into the inverter using the DRW copy
unit) no entry must be made using the inverter's digital operator for at least 6 seconds. However, when a key
is pressed within this time, or a reset command is issued, or the inverter is switched off, the data may not be
saved correctly.
Possible cause
Are the motor load fluctuations too great?
Are there motor resonating frequencies?
Has the correct maximum frequency
been set?
Have the nominal rpm of the motor and
the gear reduction ratio been set correctly?
The inverter power supply had been shut
off before the entered parameter settings
were saved by pressing the STR key.
After switching off the power supply the
entered values are copied into the internal
EEPROM. The power off duration should
at least be 6 seconds or more.
After copying the parameters from the
copy unit DRW into the inverter the
power supply was left in the on state for
only less than 6 seconds.
Have the functions A 01 and A 02 been
configured correctly?
Has the software lock function been
activated?
Has the hardware lock been activated?
Has position 4 of the dip switch (on the
back of the copy unit) been set to ON?
Has a too high manual boost been
configured?
Have the correct settings been made in
conjunction with the electronic thermal
protection function?
10-2
Chapter 10 – Trouble shooting
Remedy
Choose an inverter and motor of a higher
rating.
Reduce load fluctuations to a minimum.
Avoid critical frequencies by using jump
frequencies (A 63 – A 68) or change the
carrier frequency (b 83).
Check the configured operating frequency
range and the V/F characteristics.
Check the nominal rpm of the motor and
the gear reduction ratio.
Enter the parameter settings once more
and save each input made.
Enter the parameter settings once more
and then turn off the power supply for
more than 6 seconds.
Copy the parameter settings once more
and then keep the power supply turned on
for more than 6 seconds.
Check if the settings made under A 01
and A 02 are correct.
Deactivate the software lock using b 31
so that all parameters can be changed
again.
Deactivate the digital input configured
as SFT.
Set position 4 of the dip switch to OFF so
that the remote operator can be read out.
Check the settings for boost and electronic
thermal protection.
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