Operating Instructions ACU
9.2.9 Error messages during commissioning (SF…)
After completion or during the parameter identification, error messages may be displayed.
Depending on the error code, the following instructions should be followed and the measures
indicated should be taken.
The value entered for parameter Rated Current 371 is too low. Correct the value.
The value for parameter Rated Current 371 is too high, referred to parameters Rated
Mech. Power 376 and Rated Voltage 370. Correct the values.
The value entered for parameter
The calculated slip frequency is negative. Check and, if necessary, correct the values for
parameters Rated Speed 372 and Rated Frequency 375.
The calculated slip frequency is too high. Check and, if necessary, correct the values for
parameters Rated Speed 372 and Rated Frequency 375.
The calculated total output of the drive is lower than the rated power. Check and, if
necessary, correct the value entered for parameter Rated Mech. Power 376.
The set configuration is not supported by the auto set-up routine.
The main inductance measurement has failed because the motor has a high slip. Correct
the rated motor values in parameters 370, 371, 372, 374, 375 and 376 . Carry out the
guided commissioning once again. In case an error message is displayed again, enter value
110 for parameter Configuration 30 (sensor-less control (SLC) according to V/f
characteristic) if value 410 was set so far. Carry out the guided commissioning once again.
The leakage inductance measurement has failed because the motor has a high slip. Correct
the rated motor values in parameters 370, 371, 372, 374, 375 and 376 . Carry out the
guided commissioning once again. In case an error message is displayed again, enter value
110 for parameter Configuration 30 (sensor-less control (SLC) according to V/f
characteristic) if value 410 was set so far. Carry out the guided commissioning once again.
The measurement of the stator resistance did not deliver a plausible value. Check the
cables at the terminals of the motor and the frequency inverter for proper connection and
check the contacts for corrosion and safe contact. Repeat the parameter identification
The measurement of the rotor resistance did not deliver a plausible value. Check the
cables at the terminals of the motor and the frequency inverter for proper connection and
check the contacts for corrosion and safe contact. Repeat the parameter identification
9.2.10 Application data
Other parameters must be checked due to the great variety of drive applications and the resulting
parameter settings. The parameters queried during the guided commissioning procedure were
selected from standard applications. After completion of commissioning, further parameters can be
set in the PARA menu branch.
In the KP500 control unit, parameter numbers > 999 are shown in hexadecimal form
(999, A00 … B5 … C66).
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