4-100
4. It is required to refer to the actual no-load voltage of parameter 12-76 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 shall be greater than 137.5%. When the motor flux is 50% or 75%, the core’s
saturation coefficient is required to be less than 50% and 75%.
Ks3*Im
Im
Ks2*Im
Ks1*Im
75
%
50
%
100
%
137.5
%
Flux
02-013: Motor core loss
Set motor core loss as the percentage of the motor rated power
3 × Motor core loss (watt)
Motor rated power (watts, 02-05)
Note:
In V/F mode motor core loss (02-13) is used to for torque compensation
02-15
Line-to-line Resistance of motor 1
Range
【
1~60.000
】
Ω
02-16
Rotor resistance of motor 1
Range
【
1~60.000
】
Ω
02-17
Leakage Inductance of Motor 1
Range
【
0.01~200.00
】
mH
02-19
No-Load Voltage of motor 1
Range
【
0.01~600.00
】
A
02-20
No-Load Current of motor 2
Range
【
0.01~600.00
】
A
02-21
Rated current of motor 2
Range
10%~200% of inverter rated current
02-22
Rated rotation speed of motor 2
Range
【
0~60000
】
rpm
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
% W
core
( 02-13)
=
×
100%