2-170 Speed Feedback Filter
Encoderless/Deadband
Encoderless/Deadband is recommended when more than a 120:1 speed
range of operation is not
required and the user will set the speed reference
below 0.5Hz/15 RPM. The deadband will help prevent cogging and
unstable motor operation below a reference of 0.5Hz/15RPM by clamping
the speed and torque regulators to zero.
Simulator
The simulator mode allows the drive to be operated without a motor
connected and is meant for demo purposes only. If a motor is connected
with this mode selected very erratic and unpredictable operation will occur.
Speed Feedback
Filter
[Fdbk Filter Select] determines the type of filter to use for the
speed feedback. The filter is used to filter out high frequency signals
(noise) by reducing the gain at high frequencies. The selections for the filter
are:
Vector
Vector
Description 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
Vector
Gain
0 db
Rad/Sec
Gain
0 db
-6 db
Rad/Sec
4935
Gain
0 db
-12 db
Rad/Sec
4020
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