Danfoss VLT AutomationDrive FC 300 Series Programming Manual page 105

Parameter Descriptions
7-51 Process PID Feed Fwd Gain
Range:
3 3
7-52 Process PID Feed Fwd Ramp up
Range:
0.01 s [0.01 - 10.00 s] Controls the dynamics of the feed
*
7-53 Process PID Feed Fwd Ramp down
Range:
0.01 s [0.01 - 10.00 s] Controls the dynamics of the feed
*
7-56 Process PID Ref. Filter Time
Range:
0.001 s [0.001 -
*
1.000 s]
7-57 Process PID Fb. Filter Time
Range:
0.001 s [0.001 -
*
1.000 s]
104
®
VLT
Function:
the reference whereas 7-51 Process PID Feed
Fwd Gain has more choices. In winder
applications, the feed fwd factor will
typically be the line speed of the system.
Function:
forward signal when ramping up.
Function:
forward signal when ramping down.
Function:
Set a time constant for the reference first
order low-pass filter. The low-pass filter
improves steady-state performance and
dampens oscillations on the reference/
feedback signals. However severe filtering
can be detrimental to dynamic
performance.
Function:
Set a time constant for the feedback first
order low-pass filter. The low-pass filter
improves steady-state performance and
dampens oscillations on the reference/
feedback signals. However severe filtering
can be detrimental to dynamic
performance.
MG33ME02 - VLT
AutomationDrive Programmming Guide
®
is a registered Danfoss trademark