Etel DSC2P - Page 140

Operation & Software Manual
140
Direct Drives & Systems
Chapter C: System functions ETEL Doc. - Operation & Software Manual # DSC2P 903 / Ver. F / 3/6/05
With parameter K8, the speed feedback (or pseudo-derivative gain) to the state regulator (parameter K2) will
be filtered. Parameter K8 is a speed filter made up of 2 low-pass 1st order filters.
Parameter K9 is the filter on the position regulator's output (force reference), a low-pass 1st order filter, with a
-20dB/decade slope.
Parameter K82 is the filter on the current regulator's output (current in the motor).
Remark: Parameter K82 does not exist on the DSCDL.
There are also two advanced filters (second order filter) on the position regulator's output (force reference). The
default values below make the advanced filters inactive. To make it active (for specific applications), please
refer to the ETEL technical support.
The parameters of the first advanced filter are:
The parameters of the second advanced filter are:
K Name Comment
K8 Speed filter
Speed feedback filter of the position loop:
K9
Force
reference output
filter
Force reference filter (1st order) of the position regulator output:
K82 Current filter
Current output filter (1st order) of the current regulator:
K Name Comment
K104 Force reference output filter Parameter of the first digital filter
K105 Force reference output filter Parameter of the first digital filter
K106 Force reference output filter Parameter of the first digital filter
K107 Force reference output filter Parameter of the first digital filter
K108 Force reference output filter Parameter of the first digital filter
K Name Comment
K114 Force reference output filter Parameter of the second digital filter
K115 Force reference output filter Parameter of the second digital filter
K116 Force reference output filter Parameter of the second digital filter
K117 Force reference output filter Parameter of the second digital filter
K118 Force reference output filter Parameter of the second digital filter
fc
10 2 1–()⋅
2π 41.67
6–
×10 10 K8+()K8⋅⋅⋅
-----------------------------------------------------------------------------------------
=
For DSC2P and DSC2V
fc
10 2 1–()⋅
2π 55.56
6–
×10 10 K8+()K8⋅⋅⋅
-----------------------------------------------------------------------------------------
=
For DSCDP, DSCDL and DSCDM
fc
10
2π 41.67
6–
×10 10 K9+()K9⋅⋅⋅
-----------------------------------------------------------------------------------------
=
For DSC2P and DSC2V
fc
10
2π 55.56
6–
×10 10 K9+()K9⋅⋅⋅
-----------------------------------------------------------------------------------------
=
For DSCDP, DSCDL and DSCDM
fc
10
2π 41.67
6–
×10 10 K82+()K82⋅⋅⋅
-----------------------------------------------------------------------------------------------
=
For DSC2P and DSC2V
fc
10
2π 55.56
6–
×10 10 K82+()K82⋅⋅⋅
-----------------------------------------------------------------------------------------------
=
For DSCDP and DSCDM