Parameters 343
97.13
IR compensation
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
74
.
Typical IR compensation values are shown below.
WARNING!
Set IR compensation value as low as
possible. Large IR compensation value can lead to
overheating of the motor and damage to the drive,
if operated for longer periods at low speed.
3.20%
0.00…50.00%
Voltage boost at zero speed in percent of nominal motor
voltage.
1 = 1%
No.
Name/Value
Description
Default
FbEq 16
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
3-phase 380…480V drives
P
N
(kW) 0, 37 0, 75 1, 1 2, 2
4
7, 5
15
22
IR
compens
-ation
(%)
3, 5 3, 5 3, 2 2, 5
2
1, 5 1, 25 1, 2
3-phase 200...240V drives
P
N
(kW) 0, 37 0, 75 1, 1 2, 2
3
7, 5
11
IR
compens
-ation
(%)
3, 5 3, 5 2, 6 2, 4 2, 2 1, 7 1, 5
1-phase 200…240V drives
P
N
(kW) 0, 37 0, 75 1, 1 1, 5 2, 2
IR
compens
-ation
(%)
3, 0 2, 3 2, 0 1, 7 1, 5
ACS380 FW.book Page 343 Friday, May 4, 2018 4:18 PM
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