Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX User Manual
Page 352

B-14
Control Block Diagrams
Refer to Chapter 9, Applications, for additional information about the
feedback device type selections.
Important: Even though Fdbk Device Type lets you change the
feedback device type, you should use the start up procedure to change
your feedback device. The start up procedure automatically changes
several related parameters, and changing Fdbk Device Type manually
will not re-set these parameters.
Selecting Your Feedback Filter
You can use Fdbk Filter Sel (parameter 65) to select the type of
feedback filter. You can choose among the following filters:
Encoderless w/dead band. Limits operation of drive below a reference
value of 1Hz. Drive Speed and torque regulators are clamped at zero
when speed reference is less than 1 Hz.
4
If you want to use
this feedback device type:
Select this
value:
file:
Control
group:
Speed Feedback
To select
this type of filter:
Select this
value:
No filter
0
A light 35/49
radian feedback
filter
1
A heavy 20/40
radian feedback
filter
2
rad/sec
gain
0 db
rad/sec
gain
35
49
0 db
–6 db
rad/sec
gain
20
40
0 db
–12 db
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