ABB +N5600 Firmware Instructions page 265

No. Name/Value
24.14 Frequency of zero
0.50 ... 500.00 Hz
24.15 Damping of zero
-1.000 ... 1.000
Description
Defines the zero frequency of the resonance frequency filter.
The value must be set near the resonance frequency, which
is filtered out before the speed controller.
The drawing shows the frequency response.
20log |H(ω)|
10
20
0
-20
-40
-60
0 50
Zero frequency.
Defines the damping coefficient for parameter 24.14. The
value of 0 corresponds to the maximum elimination of the
resonance frequency.
20log |H(ω)|
10
20
0
-20
-40
-60
0 50
Note: To ensure that the resonance frequency band is filtered
(rather than amplified), the value of
than 24.17.
Damping coefficient.
100
f = 45 Hz
zero
ξ
= 0.250
zero
ξ
= 1
pole
f = 45 Hz
zero
ξ
= 0
zero
ξ
= 1
pole
100
24.15 must be smaller
Parameters 265
Def/FbEq16
45.00 Hz
150
f (Hz)
1 = 1 Hz
0.000
150
f (Hz)
100 = 1