Parameters 335
Defines the relative output voltage boost at zero speed (IR
compensation). The function is useful in applications with a
high break-away torque where vector control cannot be
applied.
See also section
IR compensation for scalar motor control
on
page
.
3.50%
0.00…50.00%
Voltage boost at zero speed in percent of nominal motor
voltage.
1 = 1%
Motor model
temperature
adaptation
Enables the motor model temperature adaptation. Estimated
motor temperature can be used to adapt temperature
dependent parameters (e.g. resistances) of motor model.
Disabled
Temperature adaptation disabled.
0
Estimated
temperature
Temperature adaptation with motor temperature estimate
(parameter
).
1
Tunes the motor temperature dependence of stator
parameters (stator resistance).
50%
0…200%
Tuning factor.
1 = 1%
Tunes the motor temperature dependence of rotor
parameters (eg. rotor resistance).
100%
0…200%
Tuning factor.
1 = 1%
Activates or deactivates the hexagonal field weakening.
Off
Deactivated. Use this for Ex motors.
0
On
Activated.
1
Selects the form for the
U
/
f
(voltage to frequency) ratio below
field weakening point. For scalar control only.
Linear
Linear ratio for constant torque applications.
0
Squared
Squared ratio for centrifugal pump and fan applications.
With squared U/f ratio the noise level is lower for most
operating frequencies. Not recommended for permanent
magnet motors.
1
No.
Name/Value
Description
Def/FbEq16
U
/
U
N
(%)
f
(Hz)
Field weakening point
Relative output voltage. No
IR compensation.
Relative output voltage. IR
compensation set to 15%.
15%
100%
50% of nominal
frequency
ACS580 FW.book Page 335 Wednesday, September 21, 2016 9:48 PM