4-62
02-04: Motor rated voltage
Set the motor rated voltage according to the motor nameplate.
Set the motor rated voltage and it will adjust maximum output voltage of V/F curve.
02-05: Motor rated power
The nominal motor rated capacity is set at the factory. Please verify that the motor name plate data matches the
motor rated capacity shown in parameter 02-05.
Range:
0.1 to 600.0 kW (1HP = 0.746 kW)
02-06: Rated frequency of motor 1
Set the motor rated frequency according to the motor nameplate.
02-07: Number of motor poles
Set the number of motor pole according to the motor nameplate.
02-09: Motor excitation current
It is not recommended to adjust this parameter. Use caution to when adjusting the Excitation Current.
1. The excitation current is set by performing a rotational auto-tuning. It is required to perform manual tuning if the AC
Drive cannot complete a rotational auto-tune.
2. When the manual tuning is performed, start from 33% and observe the no-load voltage (the output value) of
parameter 12-07. If parameter 12-07 is higher than no-load voltage set in parameter 17-08, decrease the value of
parameter 02-09; if no-load voltage is lower, increase the value for parameter 02-09.
3. Tuning motor excitation current of parameter 02-09 changes the motor leakage inductance of parameter 02-17 and
motor mutual inductance of parameter 02-18.
4. It is required to refer to the actual no-load voltage of parameter 12-19 to tune the motor excitation current
parameter 02-09. Changing the excitation current affects the no-load voltage fluctuation; adjust parameter 02-09 to
a value so the output voltage matches the no-load voltage (17-08).
Setting of motor core’s saturation coefficient 1, 2 and 3 (02-10, 02-11, 02-12)
These parameters are automatically set during auto-tune. No adjustment required. Parameters are set to 50% for
02-10, 75% for 02-11 and 137.5% for 02-12 to reduce the impact of core saturation. The motor core’s saturation
coefficient is defined as a percentage of the motor excitation current. When the motor flux reaches 137.5% level, the
core’s saturation coefficient must be greater than 137.5%. When the motor flux is 50% or 75%, the core’s saturation
coefficient must be less than 50% and 75%.
Ks3*Im
Im
Ks2*Im
Ks1*Im
75
%
50
%
100
%
137.5
%
Flux
Im : 02-09 Excitation Current
Ks1: 02-10 Motor Core Saturation Coefficients 1
Ks2: 02-11 Motor Core Saturation Coefficients 2 Ks3: 02-12
Motor Core Saturation Coefficients 3
02-13: Motor core loss
Set motor core loss as the percentage of the motor rated power
Note:
In V/F mode motor core loss (02-13) is used for torque compensation
%W
core
(02-13) =
3 x Motor core loss (watt)
Motor rated power (watts, 02-05)
x 100%