Danfoss VLT HVAC Basic Drive FC 101 Programming Manual page 88

Parameters
3.14.3 20-6* Sensorless
Parameters for sensorless. See also parameter 16-26 Power
Filtered [kW], parameter 16-27 Power Filtered [hp],
parameter 18-50 Sensorless Readout [unit], and
3 3
parameter 20-00 Feedback 1 Source.
20-60 Sensorless Unit
Option:
[0] None
[20] l/s Expressionlimit
*
[23] m3/s
[24] m3/min
[25] m3/h
[71] bar
[73] kPa
[74] m Wg
[75] mm Hg
[120] GPM
[121] gal/s
[122] gal/min
[123] gal/h
[124] CFM
[125] ft
3 /s
[126] ft 3
/min
[170] psi
[171] lb/in2
[172] in WG
[173] ft WG
[174] in Hg
20-69 Sensorless Information
Array [8]
Range:
0 [0 - 25 ]
*
86
VLT
Function:
Select the unit to be used with
parameter 18-50 Sensorless Readout
[unit].
Function:
View information about the sensorless data.
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®
HVAC Basic Drive FC 101
3.14.4 20-7* PI Auto-tuning
Parameters for enabling PI auto-tuning.
20-70 Closed Loop Type
Option:
[0] Auto
*
[1] Fast Pressure
[2] Slow Pressure
[3] Fast Temperature
[4] Slow Temperature
20-71 PI Performance
Option:
[0] Normal
*
[1] Fast
20-72 PI Output Change
Range:
0.10 [0.01 - 0.50 ] Set the magnitude of step change during
*
20-73 Minimum Feedback Level
Range:
-4999.000
*
20-74 Maximum Feedback Level
Range:
4999.000
*
(-4999.000) -
4999.000]
20-79 PI Autotuning
Option:
[0] Disabled
*
[1] Enabled
Function:
Select the expected application
response.
Function:
Select the relative response speed for the
application.
Function:
the auto-tuning sequence.
Function:
[-4999.000 - Expres- Set the minimum allowable
sionlimit (4999.000)] feedback value during the
auto-tuning sequence.
Function:
[Expressionlimit Set the maximum allowable
feedback value during the
auto-tuning sequence.
Function:
Select to disable PI auto-tuning.
Select to enable PI auto-tuning.
MG18B502