Danfoss ADAP-KOOL Drive Programming Manual page 158

3 Parameter Description
21-00 Closed Loop Type
Option:
[0] * Auto
3
[1] Fast Pressure
[2] Slow Pressure
[3] Fast Temperature
[4] Slow Temperature
21-01 PID Performance
Option:
[0] * Normal
[1] Fast
21-02 PID Output Change
Range:
0.10 N/A* [0.01 - 0.50 N/A]
21-03 Minimum Feedback Level
Range:
-999999.00 [-999999.999 - par. 21-04 N/A]
0 N/A*
21-04 Maximum Feedback Level
Range:
999999.000 [par. 21-03 - 999999.999 N/A]
N/A*
21-09 PID Autotuning
Option:
[0] * Disabled
[1] Enabled Ext CL 1 PID
[2] Enabled Ext CL 2 PID
[3] Enabled Ext CL 3 PID
158
Function:
This parameter defines the application response. The default mode should be sufficient for most
applications. If the relative application speed is known, it can be selected here. This will decrease
the time needed for carrying out PID Autotuning. The setting has no impact on the value of the
tuned parameters and is used only for the PID auto-tuning sequence.
Function:
Normal setting of this parameter will be suitable for pressure control in fan systems.
Fast setting would generally be used in pumping systems, where a faster control response is de-
sirable.
Function:
This parameter sets the magnitude of step change during autotuning. The value is a percentage of
full operating range. I.e. if maximum analog output voltage is set to 10 V, 0.10 is 10% of 10 V,
which is 1 V. This parameter should be set to a value resulting in feedback changes of between
10% and 20% for best tuning accuracy.
Function:
The minimum allowable feedback level should be entered here in User Units as defined in par.
21-10 Ext. 1 Ref./Feedback Unit for EXT CL 1, par.21-30
par.21-50 Ext. 3 Ref./Feedback Unit for EXT CL 3. If the level falls below par.21-03
back Level
, PID autotuning is aborted and an error message will appear on the LCP.
Function:
The maximum allowable feedback level should be entered here in User units as defined in par.
21-10 Ext. 1 Ref./Feedback Unit for EXT CL 1, par.21-30
Ext. 3 Ref./Feedback Unit
par.21-50 for EXT CL 3 If the level rises above par.21-04
back Level
, PID autotuning is aborted and an error message will appear on the LCP.
Function:
This parameter enables selection of the Extended PID controller to be autotuned and starts the PID
autotuning for that controller. Once the autotuning has successfully completed and the settings have
been accepted or rejected by the user, by pressing [OK] or [Cancel] buttons on the LCP at the end
of tuning, this parameter is reset to [0] Disabled.
MG.11.N1.02 - VLT ® is a registered Danfoss trademark
®
ADAP-KOOL Drive Programming Guide
Ext. 2 Ref./Feedback Unit for EXT CL 2 or
Minimum Feed-
Ext. 2 Ref./Feedback Unit for EXT CL 2 or
Maximum Feed-