Danfoss VLT AutomationDrive FC 301 Programming Manual page 179

Parameter Descriptions
Feedback
Disturbed feedback signal
Lowpass lter
f = 10 Hz
g
Feedback
Filtered feedback signal
Illustration 3.49 Feedback Signal
7-07 Speed PID Feedback Gear Ratio
Range: Function:
1 [ 0.0001 - The frequency converter multiplies
*
32.0000 ] the speed feedback by this ratio.
M0013101
Programming Guide
Illustration 3.50 Speed PID Feedback Gear Ratio
7-08 Speed PID Feed Forward Factor
Range:
0.6 t (Sec.)
0 %
*
7-09 Speed PID Error Correction w/ Ramp
Range:
Size
related
0.6 t (Sec.)
Illustration 3.51 Speed Error between Ramp and Actual Speed
Danfoss A/S © 10/2019 All rights reserved.
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
3
Par 7-07=n1/n2
Time
Time
177
3