Danfoss VLT AutomationDrive FC 302 Programming Manual page 112

Parameter Descriptions
7-07 Speed PID Feedback Gear Ratio
Range:
1 [ 0.0001 - 32.0000 ] The frequency converter multiplies the
*
3 3
Illustration 3.45 Speed PID Feedback Gear Ratio
7-08 Speed PID Feed Forward Factor
Range:
0 % [0 - 500 %] The reference signal bypasses the speed
*
7-09 Speed PID Error Correction w/ Ramp
Range:
300 RPM [10 - 100000
*
RPM]
Motor
Speed
Torque
Limit
Motor
Speed
Torque
Limit
Ramp
Illustration 3.46 Speed Error between Ramp and Actual Speed
110
Function:
speed feedback by this ratio.
n1
Motor
Par 7-07=1.00
Function:
controller by the amount specified. This
feature increases the dynamic performance
of the speed control loop.
Function:
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.
7-09
Time
7-09
Time
Motor Speed
®
VLT AutomationDrive FC 301/302 Programming Guide
3.9.2 7-1* Torque PI Control
Parameters for configuring the torque PI control in torque
open loop (parameter 1-00 Configuration Mode).
7-12 Torque PI Proportional Gain
Range:
100 %
*
n2
7-13 Torque PI Integration Time
Range:
0.020 s
*
Par 7-07=n1/n2
7-19 Current Controller Rise Time
Range:
Size related
3.9.3 7-2* Process Ctrl. Feedb.
Select the feedback sources for the Process PID Control,
and how this feedback should be handled.
7-20 Process CL Feedback 1 Resource
Option:
[0] No function
*
[1] Analog Input 53
[2] Analog Input 54
[3] Frequency input
29
[4] Frequency input
33
[7] Analog Input
X30/11
[8] Analog Input
X30/12
[15] Analog Input
X48/2
MG33MI02 - Rev. 2013-11-20
Function:
[0 - 500 %] Enter the proportional gain value for the
torque controller. Selection of a high value
makes the controller react faster. Too high
a setting leads to controller instability.
Function:
[0.002 - 2 s] Enter the integration time for the torque
controller. Selection of a low value makes
the controller react faster. Too low a
setting leads to control instability.
Function:
[15 - 100 %] Enter the value for the rise time of
*
the current controller as a
percentage of the control period.
Function:
The effective feedback signal is made
up of the sum of up to 2 different
input signals.
Select which frequency converter input
should be treated as the source of the
first of these signals. The second input
signal is defined in
parameter 7-22 Process CL Feedback 2
Resource.