-
Alarm
No Flow Detection must be enabled (par. 22-23,
No Flow Function
) and commissioned (par. 22-3*,
No Power Tuning
).
22-20 Low Power Auto Set-up
Option:
Function:
[0]
*
Off
[1]
Enabled
When set for
Enabled
, an auto set up sequence is activated,
automatically setting speed to approx. 50 and 85% of rated
motor speed (par. 4-13/14,
Motor Speed High Limit
). 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,
Configuration Mode
).
Note that it is important also to set par. 1-03,
Torque
Characteristics
.
NB!
Auto Set Up must be done when the system has
reached normal operating temperature!
NB!
It is important that the par. 4-13/14,
Motor Speed
High Limit
is set to the max. operational speed of
the motor!
It is important to do the Auto Set-up before con-
figuring the integrated PI Contoller as settings will
be reset when changing from Closed to Open Loop
in par. 1-00,
Configuration Mode
.
NB!
Carry out the tuning with the same settings in
Torque Characteristics
, par. 1-03, as for operation
after the tuning.
22-21 Low PowerDetection
Option:
Function:
[0]
*
Disabled
[1]
Enabled
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!
VLT
®
AQUA Drive Programming Guide
2. Parameter Description
MG.20.O2.02 - VLT
®
is a registered Danfoss trademark
197
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