Danfoss VLT AutomationDrive FC 301 Programming Manual page 128

Parameter Descriptions
Feedback
Disturbed feedback signal
3 3
Feedback
Filtered feedback signal
Illustration 3.49 Feedback Signal
126
0.6
Lowpass lter
f = 10 Hz
g
0.6
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VLT AutomationDrive FC 301/302
7-07 Speed PID Feedback Gear Ratio
Range:
1.0000 N/A
t (Sec.)
Illustration 3.50 Speed PID Feedback Gear Ratio
7-08 Speed PID Feed Forward Factor
Range:
0 %
*
7-09 Speed PID Error Correction w/ Ramp
Range:
Size related
t (Sec.)
Illustration 3.51 Speed Error between Ramp and Actual Speed
Function:
[0.0001 - 32.0000 The frequency converter
*
N/A] multiplies the speed feedback
by this ratio.
Motor
Par 7-07=1.00
Function:
[0 - 500 %] The reference signal bypasses the speed
controller by the amount specified. This
feature increases the dynamic performance
of the speed control loop.
Function:
[10 - The speed error between ramp and
*
100000 RPM] actual speed is held up against the
setting in this parameter. If the
speed error exceeds this parameter
entry, the speed error is corrected
via ramping in a controlled way.
Motor
Speed
7-09
Torque
Limit
Motor
Speed
7-09
Torque
Limit
Ramp
Motor Speed
n1 n2
Par 7-07=n1/n2
Time
Time
MG33MO02