Danfoss VLT AutomationDrive FC 361 Programming Manual page 92

Parameter Descriptions
4.8.2 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:
4 4
[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
7-22 Process CL Feedback 2 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
90
VLT® AutomationDrive FC 361
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
st
source of the 1 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
frequency converter input should
be treated as the source of the 2
st
of these signals. The 1 input signal
is defined in parameter 7-20 Process
CL Feedback 1 Resource.
Danfoss A/S © 03/2019 All rights reserved.
4.8.3 7-3* Process PID Ctrl.
7-30 Process PID Normal/ Inverse Control
Option:
[0] Normal
*
[1] Inverse
7-31 Process PID Anti Windup
Option:
[0] Off
[1] On
*
7-32 Process PID Start Speed
Range:
0 RPM [0 - 6000
*
RPM]
nd
7-33 Process PID Proportional Gain
Range:
0.01 [0 - 10 ]
*
7-34 Process PID Integral Time
Range:
10000 s [0.01 - 10000
*
s]
Function:
Normal and inverse controls are
implemented by introducing a
difference between the reference
signal and the feedback signal.
Set process control to increase the
output frequency.
Set process control to decrease the
output frequency.
Function:
Continue regulation of an error
even when the output frequency
cannot be increased or decreased.
Cease regulation of an error when
the output frequency can no longer
be adjusted.
Function:
Enter the motor speed to be
attained as a start signal for
commencement of PID 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.
Function:
Enter the PID proportional gain. The
proportional gain multiplies the
error between the setpoint and the
feedback signal.
Function:
Enter the PID integral time. The
integrator 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.
MG06J202