EN-15
Autotuning Alarms and Faults
Data Input Errors
The inverter will show a “Data Invalid” message and will not perform autotuning if:
•
the motor speed, rated frequency and pole pair number do not correspond.
•
the rated current does not correspond to the rated power value
The inverter calculates the motor power using the input current value and data from the internal motor data
table. The calculated value must be between 50% and 150% of the input value for the rated power.
Other Alarms and Faults During Autotuning
For an overview of possible autotuning alarms or faults and corrective actions refer to
page 27, Auto-tuning
Faults
.
General Precautions:
1. Use rotating autotuning whenever high precision is required or for a motor that is not connected to a load.
2. Use not rotating autotuning whenever the load cannot be disconnected from the motor (e.g. the ropes can’t be
removed).
3. Make sure, that the mechanical brake is
not
open for not rotating autotuning.
4. During autotuning the motor contactors have to be closed.
5. For autotuning the BB and BB1 signals must be ON (Inverter must not be in base block condition).
6. Confirm, that the motor is mechanically fixed and can not move.
7. Power is supplied during auto tuning, even though the motor does not turn. Do not touch the motor until auto-
tuning has been completed.
8. Remove the feather key from the motor shaft before performing a tuning with rotating motor with a stand alone
motor (no traction sheave or gear mounted).
9. To cancel autotuning, press the STOP key on the Digital Operator.
Precautions for rotating and encoder offset autotuning:
1. The load should be disconnected which means, that the ropes have to be removed and the brake must be open.
2. If the load can’t be removed, the tuning can be done with a balanced car. The tuning result accuracy will be
lower which can result in a performance loss.
3. Make sure that the brake is open during autotuning.
4. During autotuning the motor can be started and stopped repeatedly. When the tuning is finished, “END” will be
displayed in the operator panel. Do not touch the motor until this display is shown and the motor has completely
stopped.
IMPORTANT
Motor Speed
Base Frequency
60
⋅
2
Motor pole
⋅
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