
280 Parameters
97
Switching frequency; slip gain; voltage reserve; flux
braking; anti-cogging (signal injection); IR
compensation.
Defines the switching frequency of the drive that is
used as long as the drive does not heat too much. See
section
on page
Higher switching frequency results in lower acoustic
noise.
In multimotor systems, do not change the switching
frequency from the default value.
4 kHz
4 kHz.
4
8 kHz
8 kHz.
8
12 kHz
12 kHz.
12
Lowest switching frequency that is allowed. Depends
on the frame size.
1.5 kHz
1.5 kHz. In some larger frame sizes 1 kHz is used
instead.
1.5
2 kHz
2 kHz.
2
4 kHz
4 kHz.
4
8 kHz
8 kHz.
8
12 kHz
12 kHz.
12
Defines the slip gain which is used to improve the
estimated motor slip. 100% means full slip gain; 0%
means no slip gain. The default value is 100%. Other
values can be used if a static speed error is detected
despite having the setting at full slip gain.
Example
(with nominal load and nominal slip of 40
rpm): A 1000 rpm constant speed reference is given
to the drive. Despite having full slip gain (= 100%),
a manual tachometer measurement from the motor
axis gives a speed value of 998 rpm. The static speed
error is 1000 rpm - 998 rpm = 2 rpm. To compensate
the error, the slip gain should be increased to 105% (2
rpm / 40 rpm = 5%).
100%
0…200%
Slip gain.
1 = 1%
No.
Name/Value
Description
Default
FbEq 16
Summary of Contents for ACS280
Page 1: ... ABB MACHINERY DRIVES ACS280 coldplate drives Firmware manual ...
Page 4: ......
Page 10: ...10 ...
Page 16: ...16 Control panel ...
Page 20: ...20 Start up ID run and use ...
Page 24: ...24 Default control connection ...
Page 88: ...88 Program features ...
Page 298: ...298 Parameters ...