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0.6
0.6
f
g
= 10 Hz
175ZA293.11
Feedback
Disturbed feedback signal
t (Sec.)
t (Sec.)
Filtered feedback signal
Lowpass filter
Feedback
Illustration 3.49 Feedback Signal
7-07 Speed PID Feedback Gear Ratio
Range:
Function:
1
*
[ 0.0001 - 32.0000 ] The frequency converter multiplies the
speed feedback by this ratio.
Par 7-07=1.00
Par 7-07=n1/n2
130BA871.10
Motor
n1
n2
Illustration 3.50 Speed PID Feedback Gear Ratio
7-08 Speed PID Feed Forward Factor
Range:
Function:
0 %
*
[0 - 500 %] The reference signal bypasses the speed
controller by the amount specified. This
feature increases the dynamic performance
of the speed control loop.
7-09 Speed PID Error Correction w/ Ramp
Range:
Function:
Size related
*
[10 -
100000 RPM]
The speed error between ramp and
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
Time
7-09
Torque
Limit
Speed
130BC026.10
Motor
Time
Torque
Limit
Speed
Ramp
Motor Speed
7-09
Illustration 3.51 Speed Error between Ramp and Actual Speed
Parameter Descriptions
VLT
®
AutomationDrive FC 301/302
148
Danfoss A/S © 10/2018 All rights reserved.
MG33MP02
3
3
Содержание VLT AutomationDrive FC 302
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