Position Pi Ctrl.; Position Pi Feedback Source; Position Pi Droop; Position Pi Proportional Gain - Danfoss VLT AutomationDrive FC 302 Programming Manual

Parameter Descriptions
7-51 Process PID Feed Fwd Gain
Range: Function:
options. In winder applications, the feed-forward
factor is typically the line speed of the system.
3 3
7-52 Process PID Feed Fwd Ramp up
Range:
0.01 s [0.01 - 10 s] Controls the dynamics of the feed-forward
*
7-53 Process PID Feed Fwd Ramp down
Range:
0.01 s [0.01 - 10 s] Controls the dynamics of the feed-forward
*
7-56 Process PID Ref. Filter Time
Range:
0.001 s [0.001 - 1
*
s]
7-57 Process PID Fb. Filter Time
Range:
0.001 s [0.001 - 1
*
s]

3.8.11 7-9* Position PI Ctrl.

Parameters for configuring the position controller.

7-90 Position PI Feedback Source

Option:
[0] Motor
*
feedb.
P1-02
[1] 24V
encoder
32/33
152
VLT
Function:
signal when ramping up.
Function:
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.
Function:
NOTICE
This parameter is only available with
software version 48.XX.
Select the feedback source for the position PI
controller.
Use the feedback source selected as motor
feedback in parameter 1-02 Flux Motor Feedback
Source.
Single signal generated from 24V High
Threshold Logic (HTL) encoder connected to
terminals 32 and 33. Configure the 24V
encoder interface in parameter group 5.7* 24V
Encoder Input.
Danfoss A/S © 10/2018 All rights reserved.
®
AutomationDrive FC 301/302
7-90 Position PI Feedback Source
Option:
[2] MCB 102
[3] MCB 103
[4] MCO
Encoder 1
X56
[5] MCO
Encoder 2
X55
[11] MCB 15X
[12] MCB 102
Absolute
[13] 24V
encoder
27/29
[20] None

7-91 Position PI Droop

Range:
0.0 ° [0.0 -
*
360.0 °]

7-92 Position PI Proportional Gain

Range:
0.0150 [0.000 -
*
1.000 ]
Function:
Program terminals 32/33 to [0] No operation.
®
This is only available for VLT Encoder Option
MCB 102. Configure the encoder interface in
parameter groups 17-0*, 17-1* and 17-2*.
®
This is only available for VLT Resolver Option
MCB 103. Configure the resolver interface in
parameter groups 17-5*.
The MCO encoder 1 X56 is only available with
motion control options MCO 305, MCO 350
and MCO 351.
Configure the encoder interface in parameter
group 32-3* Encoder 1.
The MCO encoder 1 X56 is only available with
motion control options MCO 305, MCO 350
and MCO 351.
Configure the encoder interface in parameter
group 32-0* Encoder 2.
The option is only available for VLT
Option MCB 102 with version 4.00 and newer
and when parameter 17-00 Encoders Connected
is set to [1] Two Encoders.
Single signal generated from 24V High
Threshold Logic (HTL) encoder connected to
terminals 27 and 29. Configure the 24V
encoder interface in parameter group 5.7* 24V
Encoder Input.
Program terminals 27/29 to [0] No operation.
No position feedback is received. This means
that actual position remains unchanged. For
example, when the drive is used for operating
a second motor without change in position via
set up change.
Function:
Enter the motor angle deviation at 100% load
in a load sharing system. The system is 2 or
more mechanically connected motors in
positioning or synchronization mode. In
positioning mode, configure
parameter 7-01 Speed PID Droop to allow a
speed deviation.
Function:
NOTICE
This parameter is only available
with software version 48.XX.
Enter the proportional gain for the
position PI controller. Increasing the gain
®
Encoder
MG33MP02