Group 26: Motor Control - ABB ACS 160 User Manual

Group 26: Motor Control

Code Description
2603 IR COMPENSATION
IR compensation voltage at 0 Hz.
Note! IR compensation should be
kept as low as possible to prevent
overheating. Refer to Table 3.
2604 IR COMP RANGE
IR compensation range. Defines frequency after which IR compensation is 0 V.
2605 LOW NOISE
Motor acoustical noise option.
0 =
OFF
Standard (switching frequency 4 kHz).
1 = (1)
ON
Low noise (switching frequency 8 kHz).
Note! When the low noise setting is used, the maximum loadability must be derated, see reference section
N.
2606 U/f RATIO
U/f ratio below field weakening point.
1 =
LINEAR
2 =
SQUARE
Linear is preferred for constant torque applications, Square for centrifugal pump and fan applications.
(Square is more silent for most operating frequencies.)
2607 SLIP COMP RATIO
A squirrel-cage motor will slip under load. The slip can be compensated by increasing the frequency as the
motor torque increases. This parameter defines the gain for the slip. 100 % means full slip compensation;
0 % means no slip compensation.
Figure 12 Operation of IR compensation
ACS 160 User's Manual
Table 3
400 V Units
P / kW
N
IR comp / V
U (%)
IR compensation
U
N
Typical IR compensation values.
0,55 0,75 1,1
33 30 27
IR compensation range
No compensation
Field
weakening
point
1,5 2,2
25 23
f (Hz)
75