ABB +N5600 Firmware Instructions page 266

266 Parameters
No. Name/Value
24.16 Frequency of pole
0.50 ... 500.00 Hz
24.17 Damping of pole
-1.000 ... 1.000
Description
Defines the frequency of pole of the resonance frequency
filter.
20log |H(ω)|
10
40
20
0
-20
f = 45 Hz
zero
f = 30 Hz
pole
-40
ξ
= 0
zero
ξ
= 0.250
pole
-60
0
Note: If this value is very different from the value of 24.14, the
frequencies near the frequency of pole are amplified, which
can damage the driven machine.
Frequency of pole.
Defines the damping coefficient for parameter 24.16. The
coefficient shapes the frequency response of the resonance
frequency filter. A narrower bandwidth results in better
dynamic properties. By setting this parameter to 1, the effect
of the pole is eliminated.
20log |H(ω)|
10
40
20
0
-20
f = 45 Hz
zero
f = 40 Hz
pole
-40
ξ
= 0
zero
ξ
= 0.750
pole
-60
0
Note: To ensure that the resonance frequency band is filtered
(rather than amplified), the value of
than 24.17.
Damping coefficient.
f = 45 Hz
zero
f = 50 Hz
pole
ξ
= 0
zero
ξ
= 0.250
pole
f = 45 Hz
zero
f = 40 Hz
pole
ξ
= 0
zero
ξ
= 0.250
pole
50
f = 45 Hz
zero
f = 40 Hz
pole
ξ
= 0
zero
ξ
= 0.050
pole
f = 45 Hz
zero
f = 40 Hz
pole
ξ
= 0
zero
ξ
= 0.250
pole
50
24.15 must be smaller
Def/FbEq16
40.00 Hz
100
f (Hz)
1 = 1 Hz
0.250
100
f (Hz)
100 = 1