Rockwell Automation Publication 750-PM001N-EN-P - February 2017 65
Drive Port 0 Parameters Chapter 3
FEEDBACK & I/O
Feedback
129 Alt Vel FdbkFltr
Alternate Velocity Feedback Filter
Adjusts a filter setting that is applied to the motor velocity feedback source that is
selected by P128 [Alt Vel Fdbk Sel]. The purpose of this filter is to reduce the level of
noise in the feedback signal. Filter adjustment and operation is similar to P126 [Pri Vel
FdbkFltr].
Make a selection for a value that is higher than the value in parameter 648 [Alt Speed
Reg BW].
Default:
Options:
3 – 50R/S Noise
0 – 190R/S Noise
1 – 160R/S Noise
2 – 100R/S Noise
3 – 50R/S Noise
4 – 25R/S Noise
5 – 12R/S Noise
6 – 6R/S Noise
7 – 3R/S Noise
RW 32-bit
Integer
130 Alt Vel Feedback
Alternate Velocity Feedback
Output of the Alternate Velocity Feedback Delay filter, displayed in units of Hz or RPM,
depending on the value of P300 [Speed Units]. Adjustment of the delay filter is made
using P126 [Pri Vel FdbkFltr]. The Alternate Velocity Feedback is used when the drive is
operating with an Automatic Tach Switchover.
Units:
Default:
Min/Max:
Hz
RPM
0.00
–/+P27 [Motor NP Hertz]
–/+P28 [Motor NP RPM] x 8
RO Real
131 Active Vel Fdbk
Active Velocity Feedback
Active motor velocity feedback value that used by the Flux Vector control’s velocity
regulator or the V/Hz and Sensorless Vector velocity regulator. This value in use is the
result of the Primary/Alternate feedback selection.
When the drive is operating without an Automatic Tach Switchover, then P127 [Pri Vel
Feedback] is selected. When the drive is operating with an Automatic Tach Switchover,
then the P130 [Alt Vel Feedback] will be selected. Status Bit 5 “FdbkLoss SwO” will
become set in P936 [Drive Status 2] when an Automatic Tach Switchover has occurred.
When operation in a non-vector control mode (V/Hz or Sensorless Vector) with open
loop feedback, the Active Velocity Feedback parameter value will track the value in P597
[Final Speed Ref].
Units:
Default:
Min/Max:
Hz
RPM
0.00
–/+P27 [Motor NP Hertz]
–/+P28 [Motor NP RPM] x 8
RO Real
132 Aux Vel Fdbk Sel
Auxiliary Velocity Feedback Select
Selects the source of the drive’s P134 [Aux Vel Feedback]. Possible selections are the
same as for P125 [Pri Vel Fdbk Sel].
Auxiliary feedback source is made available as a speed reference selection. It can be used
when the drive’s speed reference source needs to be an encoder.
Default:
Min/Max:
137
1 / 159999
RW 32-bit
Integer
133 Aux Vel FdbkFltr
Auxiliary Velocity Feedback Filter
Adjusts a filter setting that is applied to the P134 [Aux Vel Feedback] that is selected by
P132 [Aux Vel Fdbk Sel]. The purpose of this filter is to reduce the level of noise present
in the feedback signal. Filter adjustment and operation is similar to P126 [Pri Vel
FdbkFltr].
Default:
Options:
3 – 50R/S Noise
0 – 190R/S Noise
1 – 160R/S Noise
2 – 100R/S Noise
3 – 50R/S Noise
4 – 25R/S Noise
5 – 12R/S Noise
6 – 6R/S Noise
7 – 3R/S Noise
RW 32-bit
Integer
134 Aux Vel Feedback
Auxiliary Velocity Feedback
Output of the Auxiliary Velocity Feedback Delay filter, in units of Hz or RPM, depending
on the value of P300 [Speed Units]. Adjustment of the delay filter is made using P126
[Pri Vel FdbkFltr]. Typically used as a speed reference source. This selection is available in
P545 [Spd Ref A Sel] and P550 [Spd Ref B Sel].
Units
Default:
Min/Max:
Hz
RPM
0.00
–/+P27 [Motor NP Hertz]
–/+P28 [Motor NP RPM] x 8
RO Real
135 Psn Fdbk Sel
Position Feedback Select
Selects the source of P847 [Psn Fdbk]. Possible selections include: Port 0 – Simulator
Fdbk, and any Port that contains a feedback module (for example, Encoder). Open Loop
Feedback is not available as a Position feedback source. The default setting is P138
[Simulator Fdbk]. This is a test mode where position feedback is calculated based on
P690 [Limited Trq Ref] and P76 [Total Inertia]. When position control is used, a valid
position feedback source must be selected.
Default:
Min/Max:
138
1 / 159999
RW 32-bit
Integer
File
Group
No. Display Name
Full Name
Description
Values
Read-Write
Data Type
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