22-24 No-Flow Delay
Range:
Function:
10 s*
[1 - 600 s]
Set the time Low Power/Low Speed must stay detected to activate signal for actions. If detection
disappears before run out of the timer, the timer will be reset.
22-26 Dry Pump Function
Option:
Function:
Low Power Detection
must be Enabled (par. 22-21
) and commissioned (using
either par. 22-3*,
No Flow Power Tuning
) in order to use Dry
Pump Detection.
[0] *
Off
[1]
Warning
Messages in the Local Control Panel display (if mounted) and/or signal via a relay or a digital output.
[2]
Alarm
The frequency converter trips and motor stays stopped until reset.
22-27 Dry Pump Delay
Range:
Function:
10 s*
[0 - 600 s]
Defines for how long the Dry Pump condition must be active before activating Warning or Alarm
22-30 No-Flow Power
Range:
Function:
0.00 kW*
[0.00 - 0.00 kW]
Read out of calculated No Flow power at actual speed. If power drops to the display value the
frequency converter will consider the condition as a No Flow situation.
22-31 Power Correction Factor
Range:
Function:
100 %*
[1 - 400 %]
Make corrections to the calculated power at par. 22-30
.
If No Flow is detected, when it should not be detected, the setting should be decreased. However,
if No Flow is not detected, when it should be detected, the setting should be increased to above
100%.
22-32 Low Speed [RPM]
Range:
Function:
0 RPM*
[0 - par. 22-36 RPM]
To be used if par. 0-02 Motor
Speed Unit
has been set for RPM (parameter not visible if Hz selected).
Set used speed for the 50% level.
This function is used for storing values needed to tune No Flow Detection.
22-33 Low Speed [Hz]
Range:
Function:
0 Hz*
[0.0 - par. 22-37 Hz]
To be used if par. 0-02 Motor
Speed Unit
has been set for Hz (parameter not visible if RPM selected).
Set used speed for the 50% level.
The function is used for storing values needed to tune No Flow Detection.
22-34 Low Speed Power [kW]
Range:
Function:
0 kW*
[0.00 - 0.00 kW]
To be used if par. 0-03 Regional
Settings
has been set for International (parameter not visible if
North America selected).
Set power consumption at 50% speed level.
This function is used for storing values needed to tune No Flow Detection.
8. How to programme the frequency converter
VLT
®
AQUA Drive
Operating Instructions
98
MG.20.M5.02 - VLT
®
is a registered Danfoss trademark
8
