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VLT Automation VT Drive FC322
Programming Guide
22-20 Low Power Auto Set-up
Option:
[0] *
Off
[1]
Enabled
NB!
Auto Set Up must be done when the system has reached normal operating temperature!
NB!
It is important that the par. 4-13
speed of the motor!
It is important to do the Auto Set-up before configuring the integrated PI Contoller as settings will be reset when changing from Closed
to Open Loop in par. 1-00
NB!
Carry out the tuning with the same settings in par. 1-03
22-21 Low Power Detection
Option:
[0] *
Disabled
[1]
Enabled
22-22 Low Speed Detection
Option:
[0] *
Disabled
[1]
Enabled
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Function:
When set for
Enabled
, an auto set up sequence is activated, automatically setting speed to approx.
50 and 85% of rated motor speed (par. 4-13
High Limit [Hz]
). At those two speeds, the power consumption is automatically measured and stored.
Before enabling Auto Set Up:
1.
Close valve(s) in order to create a no flow condition
2.
The frequency converter must be set for Open Loop (par. 1-00
Note that it is important also to set par. 1-03
Motor Speed High Limit [RPM]
or par. 4-14
Configuration Mode
.
Torque Characteristics
Function:
If selecting Enabled, the Low Power Detection commissioning must be carried out in order to set
the parameters in group 22-3* for proper operation!
Function:
Select Enabled for detecting when the motor operates with a speed as set in par. 4-11
Low Limit [RPM]
Motor Speed Low Limit [Hz]
or par. 4-12
MG.20.W1.22 - VLT is a registered Danfoss trademark
2 Parameter Description
Motor Speed High Limit [RPM]
, par. 4-14
Configuration Mode
Torque Characteristics
.
Motor Speed High Limit [Hz]
is set to the max. operational
, as for operation after the tuning.
.
Motor Speed
2
).
Motor Speed
213
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