Danfoss VLT AQUA Drive FC 200 Operating Instructions Manual page 114

VLT AQUA Low Harmonic Drive Operating In-
structions
NB!
Do not set par. 14-20
the drive to continuously cycle between running and stopping when a No Flow condition is detected.
NB!
If the drive is equipped with a constant speed bypass with an automatic bypass function that starts the bypass if the drive experiences
a persistent alarm condition, be sure to disable the bypass's automatic bypass function, if [3] Alarm is selected as the No-Flow Function.
22-24 No-Flow Delay
Range:
10 s* [1 - 600 s]
22-26 Dry Pump Function
Select desired action for dry pump operation.
Option:
[0] * Off
[1] Warning
[2] Alarm
[3] Man. Reset Alarm
NB!
Low Power Detection must be Enabled (par. 22-21 Low Power Detection ) and commissioned (using either parameter group 22-3*, No
Flow Power Tuning , or par. 22-20 Low Power Auto Set-up ) in order to use Dry Pump Detection.
NB!
Do not set par. 14-20
cause the drive to continuously cycle between running and stopping when a Dry Pump condition is detected.
NB!
If the drive is equipped with a constant speed bypass with an automatic bypass function that starts the bypass if the drive experiences
a persistent alarm condition, be sure to disable the bypass's automatic bypass function, if [2] Alarm or [3] Man. Reset Alarm is selected
as the Dry Pump Function.
22-27 Dry Pump Delay
Range:
10 s* [0 - 600 s]
22-30 No-Flow Power
Range:
0.00 kW* [0.00 - 0.00 kW]
Reset Mode , to [13] Infinite auto reset, when par. 22-23 No-Flow Function is set to [3] Alarm. Doing so will cause
Function:
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.
Function:
The drive will continue to run, but activate a Dry pump warning [W93]. A drive digital output or a
serial communication bus can communicate a warning to other equipment.
The drive will stop running and activate a Dry pump alarm [A93]. A drive digital output or a serial
communication bus can communicate an alarm to other equipment.
The drive will stop running and activate a Dry pump alarm [A93]. A drive digital output or a serial
communication bus can communicate an alarm to other equipment.
Reset Mode , to [13] Infinite auto reset, when par. 22-26 Dry Pump Function is set to [2] Alarm. Doing so will
Function:
Defines for how long the Dry Pump condition must be active before activating Warning or Alarm
Function:
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.
®
MG.20.T1.02 - VLT is a registered Danfoss trademark
6 How to Programme the Low Harmonic Drive
6
113