User Manual of A90 Series Inverter
178
F06.17=0
: braking by the set current of F06.18 for zero servo operation;
F06.17=1
: no processing;
F06.17=2
: the inverter freely stop running with its output blocked.
In the vector control mode, voltage feedforward adjustment is added to automatically
increase the torque, i.e. the compensation for stator voltage drop.
Function
code
Function code name
Parameter description Unit
Default
setting
Attribute
F06.21 Flux weakening control options
0: Invalid
1: direct calculation
2: automatic adjustment
1
○
F06.22 Flux weakening voltage
70.00-100.00
% 100.00
●
F06.23
Maximum flux weakening
current of synchronous motor
0.0-150.0 (100.0 is the
rated current of the
motor)
%
100.0
●
F06.24
Proportional gain of flux
weakening regulator
0.00 - 10.00
0.50
●
F06.25
Integral time of flux weakening
regulator
0.01 - 60.00
s
2.00
●
The synchronous motor is subject to flux weakening control.
F06.21=0: invalid
Flux weakening control is not performed. The maximum speed of the motor is related
to the bus voltage of the inverter. When the maximum speed of the motor does not meet
user requirements, the flux weakening function of the synchronous motor should be enabled
to increase the speed.
A90 has two flux weakening modes: direct calculation and automatic adjustment.
F06.21=1: direct calculation
In the direct calculation mode, the flux weakening current is calculated according to
the target speed and can be adjusted manually via the option 06.22. The lower the flux
weakening current, the lower the total output current will be, but the desired effect of flux
weakening may not be achieved.
Function
code
Function code name
Parameter description
Unit
Default
setting
Attribute
F06.20
Voltage feedforward
gain
0 - 100
%
0
●
