Dynamic limit characteristic curve
The dynamic limit characteristic curve depicts the maximum torque the motor can generate at a certain speed. Note that the inverter must supply sufficient current for the motor to reach its maximum torque.
The base speed is especially important for configuration. The base speed is the available speed up to the maximum motor torque. In inverter operation, the base speed indicates the beginning of field weakening. The motor torque is limited by the voltage limit characteristic curve in the field-weakening range, and decreases with increasing speed.
MN is determined by the motor. Mpk and npk depend on the motor/inverter combination. The values for Mpk and npk in the VFCPLUS, CFC, ELSM® control modes can be found on the website of SEW-EURODRIVE.
