User Manual of EM760 High-Performance Inverter If the ten’splace ofF06.21 is 0, it means flux weakening regulation is performed only when the output voltage reaches the maximum suppliable by the busbar. In this case, F06.22 refers to the percentage of the max. AC voltage corresponding to the busbar voltage. If the ten’s place is 1, it means output voltage is controlled based on the rated voltage of the motor. F06.22 refers to the percentage of the rated voltage of the motor. In case of an asynchronous motor and non-zero units place ofF06.21, flux weakening is secured by reducing excitation current, which is acquired via closed-loop automatic regulation of flux weakening voltage.
When the units place ofF06.21 is 0, the flux weakening function is invalid while the excitation current remains unchanged. In case of a synchronous motor and 1 at the units place of F06.21, the backward excitation current is acquired via closed-loop automatic regulation offlux weakening voltage. In case of2 at the units place of F06.21, the backward excitation current is the sum of the closed-loop automatic regulation of flux weakening voltage plus the excitation current calculated from flux weakening. When the units place ofF06.21 is 0, the flux weakening function is invalid.
F06.24 and F06.25 are the proportional gain and integral time constant of the regulator during closed-loop automatic regulation of flux weakening voltage. 212 Synchronous motor Ones place: Synchronous motor flux weakening mode 0: Invalid 1: direct calculation 2: automatic adjustment Tens place: Output voltage limiting method of synchronous motor in the flux weakening mode 0: F06.22 output voltage limiting according to bus voltage 1:
F06.22 output voltage limiting according to rated voltage F06.22 Flux weakening voltage 70.00~100.00 % 100.00 ● F06.23 Maximum field weakening current of synchronous motor 0.0-150.0 (100.0 is the rated current of the motor) % 100.0 ● Function code Function codename Parameter description Unit Default setting Attribute F06.24 Proportional gain of flux weakening regulator 0.00~10.00 0.50 ● F06.25 Integral time of flux weakening regulator 0.000~6.000 s 0.200 ● Function code Function codename Parameter description Unit Default setting Attribute F06.29 Injection current of low frequency band 0.0-60.0 (100.0 is the rated current of the motor) % 40.0 ● F06.33 Injection current f high frequency band 0.0-30.0 (100.0 is the rated current of the motor) % 8.0 ●