Motor parameters for motors with large rated current: Calculated setting values exceed value range of associated parameters (corrected from V01.08.00)
Corrected from:
Servo Inverter i950 FW: from V01.08.00
Response of the new version:
The permissible value ranges have now been extended for the following parameters:
0x29C0:1 (field controller gain)
0x2C05 (reference current Lss tracking)
0c6075 ( )
Due to the extension of the value ranges, the value range limits are no longer exceeded when setting the motor parameters via the engineering tool.
What happens?
Motor selection in the engineering tool:
When selecting the motor and transferring it to the inverter, an error message is issued in the tool because at least one setting value to be transferred is outside the value range of the parameter, e.g.: 0x29C0:1 (field controller gain) and 0x2C05 (reference current Lss tracking).
Background:
The motor data table contains setting values for parameters that must be set motor-specifically. In addition to the motor nameplate data, many other parameters must be set. The setting values for some parameters, such as the controller settings, are calculated from other parameters before all parameters are transferred to the inverter.
If the calculated setting values are outside the permissible value range of the parameter, the maximum value is transferred to the parameter and an error message is output in the tool.
When does the behaviour occur?
Motors with large rated current and/or very low impedance, e.g.: m540 motors and
Setting the motor parameters via the motor selection in the engineering tool
The automatic calculation of the setting values themselves cannot be changed by the user.
However, motors can usually be operated with parameters that do not fit exactly. Therefore, if the parameters concerned are set within the permissible range of values and thus deviate slightly from the calculated values, it will still be possible to operate the motor.
