Danfoss VLT AQUA Drive Design Manual page 26

2. Introduction to the VLT AQUA Drive
2.9.4. Programming Order
Function
1) Make sure the motor runs properly. Do the following:
2
Set the drive to control the motor, based on
drive output frequency.
Set the motor parameters using nameplate
data.
Run Automatic Motor Adaptation.
2) Check that the motor is running in the right direction.
Press the "Hand On" LCP key and the ^ key
to make the motor turn slowly. Make sure
that the motor runs in the correct direction.
3) Make sure the adjustable frequency drive limits are set to safe values
Make sure that the ramp settings are within
the capabilities of the drive and allowed
application operating specifications.
Prohibit the motor from reversing (if nec-
essary)
Set acceptable limits for the motor speed. 4-12
Switch from open-loop to closed-loop.
4) Configure the feedback to the PID controller.
Set up Analog Input 54 as a feedback input. 20-00
Select the appropriate reference/feedback
unit.
5) Configure the setpoint reference for the PID controller.
Set acceptable limits for the setpoint refer-
ence.
Set up Analog Input 53 as Reference 1
Source.
6) Scale the analog inputs used for setpoint reference and feedback.
Scale Analog Input 53 for the pressure
range of the potentiometer (0 - 10 Bar, 0 -
10 V).
Scale Analog Input 54 for pressure sensor
(0 - 10 Bar, 4 - 20 mA)
7) Tune the PID controller parameters.
Adjust the drive's closed-loop controller, if
needed.
8) Finished!
Save the parameter settings for the LCP for
safekeeping.
2.9.5. Tuning the Drive Closed-loop Controller
Once the drive's closed-loop controller has been set up, the performance of the controller should
be tested. In many cases, its performance may be acceptable using the default values of PID
Proportional Gain (par. 20-93) and PID Integral Time (par. 20-94). However, in some cases it may
be helpful to optimize these parameter values to provide faster system response while still con-
trolling speed overshoot.
26
Par. no. Setting
Hz
0-02
1-2* As specified by motor nameplate
Enable complete AMA
1-29
AMA function.
If the motor runs in the wrong direction,
disconnect the power temporarily and re-
verse two of the motor phases.
3-41 60 sec.
3-42 60 sec.
Depends on motor/load size!
Also active in hand mode.
Clockwise
4-10
10 Hz,
4-14 50 Hz,
4-19 50 Hz,
Closed-loop
1-00
Analog input 54
Bar
20-12
3-02 0 Bar
3-03 10 Bar
Analog input 53
3-15
6-10 0 V
6-11 10 V (default)
6-14 0 Bar
6-15 10 Bar
6-22 4 mA
6-23 20 mA (default)
6-24 0 Bar
6-25 10 Bar
20-93 See Optimization of the PID Controller be-
20-94 low.
0-50 All to LCP
MG.20.N2.22 - VLT ® is a registered Danfoss trademark.
VLT ® AQUA Drive Design Guide
[1]
[1] and then run the
[0]
Motor min speed
Motor max speed
Drive max output frequency
[3]
[2] (default)
[71]
[1] (default)
[1]