Parker AC30 series, User Manual

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Parameter Reference
D-69
AC30 series Variable Speed Drive
Parameter Name No. Path Default Range Units Writable
Filter Type 1544 Parameters::Motor Control::Filter On
Torque Dmd 0 0:NONE
1:MAX ATTENUATION
2:MINIMUM PHASE
3:PHASE ADVANCE
4:NOTCH ALWAYS
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
1
1 0
. 1 1
) (
1
1
) (
1





 


z b
z a a
z H
s
s H

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
0
. 1 1
) (
1
1
) (
1



 


z b
a
z H
s
s H

PHASE ADVANCE : Gives a phase advance between Frequency 1 and Frequency 2 .
1
1
1 0
2
1
. 1 1
) (
1
1
) (
1





 
 


z b
z a a
z H
s
s
s H


NOTCH : Zero transmission notch at a frequency given by Cut Off Frequency . The damping factor is given by Factor .
2
2
1
1
2
2
1
1 0
2
2
2
2
2 2
2 2
. 1
) (
2 1
1
2
. 1 ) (
1
 
 
  
  

 


 



z b z b
z a z a a
z H
s s
s
s s
s
s H
 


 

Cut Off Frequency 1545 Parameters::Motor Control::Filter On
Torque Dmd 2000 20 to 6000 Hz ALWAYS
3dB attenuation frequency if Filter Type is MAX ATTENUATION or MINIMUM PHASE
Frequency of Zero transmission if Filter Type is NOTCH