Danfoss VLT AQUA Drive FC 200 Instruction Manual page 89

How to program the adjustab...
22-23 No-Flow Function
Common actions for Low Power Detection and Low Speed
Detection (Individual selections not possible).
Option:
[0] OFF
*
[1] Sleep Mode The drive will enter sleep mode and stop
[2] Warning
6 6
[3] Alarm
NOTE!
Do not set 14-20 Reset Mode to [13] Infinite auto reset
when 22-23 No-Flow Functionis set to [3] Alarm. Doing so
will cause the drive to continuously cycle between running
and stopping when a No Flow condition is detected.
NOTE!
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' automatic bypass function, if [3] Alarm
is selected as the No-Flow Function.
22-24 No-Flow Delay
Range:
10 s [1 - 600 s] Set the time. Low Power/Low Speed must
*
22-26 Dry Pump Function
Select desired action for dry pump operation.
Option:
[0] OFF
*
[1] Warning The drive will continue to run, but activate a dry
[2] Alarm
6-26
VLT AQUA 12-Pulse High Power Instruction Manual
Function:
The drive will not respond to a No Flow
condition.
when a No Flow condition is detected. See
parameter group AP-4# for programming
options for sleep mode.
The drive will continue to run, but activate a
No-Flow Warning [W92]. A drive digital output
or a serial communication bus can
communicate a warning to other equipment.
The drive will stop running and activate a No-
Flow Alarm [A 92]. A drive digital output or a
serial communication bus can communicate
an alarm to other equipment.
Function:
remain detected to activate signal for actions.
If detection disappears before the timer runs
out, the timer will be reset.
Function:
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
MG.20.Y1.22 - VLT
22-26 Dry Pump Function
Select desired action for dry pump operation.
Option: Function:
serial communication bus can communicate an
alarm to other equipment.
NOTE!
Low Power Detection must be Enabled (22-21 Low Power
Detection) and commissioned (using either parameter
group AP-3#, No Flow Power Tuning, or 22-20 Low Power
Auto Set-up) in order to use Dry Pump Detection.
NOTE!
Do not set 14-20 Reset Mode, to [13] Infinite auto reset,
when 22-26 Dry Pump Function is set to [2] Alarm. Doing so
will cause the drive to continuously cycle between running
and stopping when a dry pump condition is detected.
NOTE!
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: 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:
0.00 kW [0.00 - 0.00
*
kW]
22-31 Power Correction Factor
Range: Function:
100 % [1 - 400 Make corrections to the calculated power at
*
%] 22-30 No-Flow Power.
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%.
®
is a registered Danfoss trademark
Function:
Readout of calculated no-flow power at
actual speed. If power drops to the
display value, the adjustable frequency
drive will consider the condition as a
no-flow situation.