Danfoss VLT AutomationDrive FC 360 Programming Manual page 78

Parameter Descriptions
4.8.2 7-1* Torque PI Control
Parameters for configuring the torque PI control.
7-12 Torque PID Proportional Gain
Range:
100 % [0 - 500 %] Enter the proportional gain value for the
*
4 4
7-13 Torque PID Integration Time
Range:
0.020 s [0.002 - 2 s] Enter the integration time for the torque
*
4.8.3 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
7-22 Process CL Feedback 2 Resource
Option:
[0] No function
*
[1] Analog Input 53
[2] Analog Input 54
[3] Frequency input
29
76
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VLT AutomationDrive FC 360
Function:
torque controller. Selection of a high value
makes the controller react faster. Too high
a setting leads to controller instability.
Function:
controller. The lower the integration time,
the faster the controller reacts. However,
too low a setting leads to controller
instability.
Function:
The effective feedback signal is made up
of the sum of up to 2 different input
signals. Select which input is treated as
the source of the first of these signals.
nd
The 2 input signal is defined in
parameter 7-22 Process CL Feedback 2
Resource.
Function:
The effective feedback signal is made up
of the sum of up to 2 different input
signals. Select which input is treated as
nd
the source of the 2 of these signals.
st
The 1 input signal is defined in
parameter 7-20 Process CL Feedback 1
Resource.
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7-22 Process CL Feedback 2 Resource
Option: Function:
[4] Frequency input
33
4.8.4 7-3* Process PID Ctrl.
7-30 Process PID Normal/ Inverse Control
Option: Function:
Normal and inverse controls are implemented by
introducing a difference between the reference
signal and the feedback signal.
[0] Normal Set process control to increase the output
*
frequency.
[1] Inverse Set process control to decrease the output
frequency.
7-31 Process PID Anti Windup
Option: Function:
[0] Off Continue regulation of an error even when the output
frequency cannot be increased or decreased.
[1] On Cease regulation of an error when the output
*
frequency can no longer be adjusted.
7-32 Process PID Start Speed
Range: Function:
0 RPM [0 - Enter the motor speed to be attained as a
*
6000 start signal for commencement of PID
RPM] control. When the power is switched on, the
frequency converter starts to ramp and then
operates under speed open-loop control.
When the process PID start speed is reached,
the frequency converter changes to process
PID control.
7-33 Process PID Proportional Gain
Range: Function:
0.01 [0 - 10 ] Enter the PID proportional gain. The propor-
*
tional gain multiplies the error between the
setpoint and the feedback signal.
7-34 Process PID Integral Time
Range: Function:
9999 s [0.10 - Enter the PID integral time. The integrator
*
9999 s] provides an increasing gain at a constant
error between the setpoint and the
feedback signal. The integral time is the
time needed by the integrator to reach the
same gain as the proportional gain.
MG06C702