Danfoss VLT AQUA Drive FC 202 Operating Instructions Manual page 87

How to programme the freque...
22-26 Dry Pump Function
Select desired action for dry pump operation.
Option: Function:
[0] Off
*
[1] Warning The frequency converter continues to run,
but activates a dry pump warning [W93]. A
frequency converter digital output or a serial
communication bus can communicate a
warning to other equipment.
[2] Trip The frequency converter stops running and
activates a dry pump alarm [A93]. A
frequency converter digital output or a serial
communication bus can communicate an
alarm to other equipment.
[3] Manual Reset The frequency converter stops running and
Trip activates a dry pump alarm [A93]. A
frequency converter digital output or a serial
communication bus can communicate an
alarm to other equipment.
[4] Stop and
Trip
NOTICE
Low Power Detection must be enabled
(parameter 22-21 Low Power Detection) and commis-
sioned (using either parameter group 22-3* No-flow
Power Tuning No Flow Power Tuning, or
parameter 22-20 Low Power Auto Set-up) to use dry-pump
detection.
NOTICE
Do not set 14-20 Reset Mode, to [13] Infinite auto reset,
when parameter 22-26 Dry Pump Function is set to [2]
Alarm. Doing so causes the frequency converter to
continuously cycle between running and stopping when
a dry pump condition is detected.
NOTICE
If the frequency converter is equipped with a constant
speed bypass with an automatic bypass function that
starts the bypass if the frequency converter 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 Defines for how long the dry-pump condition
*
s] must be active before activating warning or
alarm.
The frequency converter waits for the no-flow
delay time (parameter 22-24 No-Flow Delay) to
MG20Y202
Operating Instructions
22-27 Dry Pump Delay
Range:
22-30 No-Flow Power
Range:
0 kW
*
22-31 Power Correction Factor
Range:
100
%
*
22-32 Low Speed [RPM]
Range:
Size
related
*
22-33 Low Speed [Hz]
Range:
Size
related
*
22-34 Low Speed Power [kW]
Range:
Size
related
*
Danfoss A/S © Rev. 06/2014 All rights reserved.
Function:
expire before the timer for the dry pump delay
starts.
Function:
[0 - 0 kW] Readout of calculated no-flow power at
actual speed. If power drops to the display
value, the frequency converter considers the
condition as a no-flow situation.
Function:
[1 - Make corrections to the calculated power at
400 %] parameter 22-30 No-Flow Power.
If no flow is detected, when it should not be
detected, decrease the setting. However, if no
flow is not detected, when it should be
detected, increase the setting to above 100%.
Function:
[ 0 - par. To be used if 0-02 Motor Speed Unit has
22-36 RPM] 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.
Function:
[ 0 - par. To be used if 0-02 Motor Speed Unit has
22-37 Hz] 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.
Function:
[ 0 - To be used if 0-03 Regional Settings has
5.50 kW] 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.
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