Danfoss VLT AutomationDrive FC 301 Programming Manual page 126

Parameter Descriptions
Feedback
Disturbed feedback signal
3 3
Feedback
Filtered feedback signal
Illustration 3.47 Feedback Signal
124
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 [ 0.0001 - 32.0000] The frequency converter multiplies the
*
t (Sec.)
Illustration 3.48 Speed PID Feedback Gear Ratio
7-08 Speed PID Accel. Feed Forward Factor
Range:
0 %
*
7-09 Speed PID Error Correction w/ Ramp
Range:
300 RPM
t (Sec.)
Illustration 3.49 Speed Error between Ramp and Actual Speed
Function:
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 - 100000 The speed error between ramp and
*
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
MG33ML02