Parker AC30 Serie Manual Del Producto página 365

Parameter Name No.
Filter Type 1544
NONE : no filter applied – no parameter selection
MAX ATTENUATION : First Order Low Pass Filter (Butterworth form). 3dB attenuation frequency given by Cut Off Frequency.
1
=
H ( s ) H
τ
+ ⋅
1 s
MINIMUM PHASE : First Order Low Pass Fitler (similar to preceeding, but with less phase shift and less efficient roll off
characteristics). 3dB attenuation frequency given by Cut Off Frequency.
1
=
H ( s )
+ τ ⋅
1 s
PHASE ADVANCE : Gives a phase advance between Frequency 1 and Frequency 2.
τ
+ ⋅
1 s
=
1
H ( s )
τ
+ ⋅
1 s
2
NOTCH : Zero transmission notch at a frequency given by Cut Off Frequency. The damping factor is given by Factor.
ω
+
2 2
s
=
H ( s ) . 1
ξω
+ +
2
s 2 s
Cut Off Frequency 1545
3dB attenuation frequency if Filter Type is MAX ATTENUATION or MINIMUM PHASE
Frequency of Zero transmission if Filter Type is NOTCH
AC30 series Variable Speed Drive
Path
Parameters::Motor Control::Filter On
Torque Dmd
+ −
1
a a z
=
0 1
( z − )
1
+ −
1
1 b . 1 z
a
=
0
H ( z − )
1
+ −
1
1 b . 1 z
−
+
1
a a z
=
0 1
−
H ( z )
1
+ −
1
1 b . 1 z
2
s
+
1
ω
a
2
= =
−
H ( z )
1
ω
2 2
s s 1
ξ
+ +
1 2
ω ω
2
Parameters::Motor Control::Filter On
Torque Dmd
Default Range
0 0:NONE
1:MAX ATTENUATION
2:MINIMUM PHASE
3:PHASE ADVANCE
4:NOTCH
− −
+ + ⋅
1 2
a z a z
0 1 2
− −
+ + ⋅
1 2
b . z b z
1 2
2000 20 to 6000
D-73
Parameter Reference
Units Writable
ALWAYS
Hz ALWAYS