SINUS PENTA
PROGRAMMING
INSTRUCTIONS
268/452
C024 (C067,C110) Mutual Inductance
C024 (Motor 1)
C067 (Motor 2)
C110 (Motor 3)
Range
0
65000
0.00
650.00mH
Default
25000
250.00mH
Level
ADVANCED
Address
1024, 1067, 1110
Function
This parameter defines the mutual inductance of the connected motor.
The approximate value of the mutual inductance results from no-load current
according to the formula below:
M
(Vmot – Rstat*Io) / (2
fmot* Io)
NOTE
Parameter
C024
(mutual inductance) is
automatically calculated
based on the preset
no-load current value (
C021
) whenever parameters
I073
and
I074
are set as follows:
I073 = [1: Motor Tune]
I074 = [0: All no rotation]
whether current loop tuning is performed or not.
C025 (C068,C111) Rotor Time Constant
C025 (Motor 1)
C068 (Motor 2)
C111 (Motor 3)
Range
0
5000
0
5000msec
Default
0
Level
ADVANCED
Address
1025, 1068, 1111
Control
FOC
Function
This parameter defines the rotor time constant of the connected motor.
If the rotor time constant is not stated by the motor manufacturer, it can be
obtained through the autotune function (see the FIRST STARTUP section and the
AUTOTUNE MENU).
NOTE
Whenever one of these parameters is written, the drive automatically computes and saves
the parameters of PI flux regulator and FOC control: proportional constant for motor 1
P158
(
P165
for motor 2,
P172
for motor 3) and integral time
P159
(
P166
for motor 2,
P173
for motor 3).
C026 (C069, C112) Time Constant of Bus Voltage Low-pass Filter
C026 (Motor 1)
C069 (Motor 2)
C112 (Motor 3)
Range
0
32000
0.0
3200.0 ms
Default
0
0.0 ms
Level
ENGINEERING
Address
1026, 1069, 1112
Function
This parameter defines the time constant of the low-pass filter of the bus
voltage readout.
Changing this value can avoid motor oscillations, especially when no load is
connected to the motor.