20-34 Fan 1 Area [m2]
Range: Function:
Sets the area of the air duct at measuring point.
0.500
m2*
[0.000 - 10.000 m2]
Note
Units of measurement depend on the setting of
par. 0-03 Regional Settings
.
20-35 Fan 1 Area [in2]
Range: Function:
Sets the area of the air duct at measuring point.
750 in2* [0 - 15000 in2]
Note
Units of measurement depend on the setting of
par. 0-03 Regional Settings
.
20-36 Fan 2 Area [m2]
Range: Function:
Sets the area of the air duct at measuring point.
0.500
m2*
[0.000 - 10.000 m2]
Note
Units of measurement depend on the setting of
par. 0-03 Regional Settings
.
20-37 Fan 2 Area [in2]
Range: Function:
Sets the area of the air duct at measuring point.
750 in2* [0 - 15000 in2]
Note
Units of measurement depend on the setting of
par. 0-03 Regional Settings
.
20-38 Air Density Factor [%]
Range: Function:
Adjusts the density of the air in % of the normalized air density (1.2 kg/
m
3
).
100 %* [50 - 150 %]
20-7* PID autotuning
The frequency converter PID Closed Loop controller (parameters 20-**, FC Closed Loop) can be auto-tuned,
simplifying and saving time during commissioning, whilst ensuring accurate PID control adjustment. To use
auto-tuning it is necessary for the frequency converter to be configured for closed loop in par.1-00
Configuration
Mode.
A Graphical Local Control Panel (keypad) must be used in order to react on messages during the auto-tuning
sequence.
Enabling par.20-79
PID Autotuning, puts the frequency converter into auto-tuning mode. The keypad then directs
the user with on-screen instructions.
Parameter Description
TR200 Programming Guide 193
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