Danfoss FC 100 Series Operating Instructions Manual page 90

How to Programme the Frequ...
NOTE
Do not set par. 14-20 Reset Mode, to [13] Infinite auto
reset, when par. 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'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] Set the time Low Power/Low Speed must stay
*
7 7
22-26 Dry Pump Function
Select desired action for dry pump operation.
Option:
[0] Off
*
[1] Warning
[2] Alarm
[3] Man. Reset
Alarm
NOTE
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.
NOTE
Do not set par. 14-20 Reset Mode, to [13] Infinite auto
reset, when par. 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.
90
®
VLT
Function:
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.
MG.11.AD.02 - VLT
HVAC Drive Operating Instructions
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:
10 s [0 - 600 s] Defines for how long the Dry Pump condition
*
22-40 Minimum Run Time
Range:
10 s [0 - 600 s] Set the desired minimum running time for the
*
22-41 Minimum Sleep Time
Range:
10 s [0 - 600 s] Set the desired Minimum Time for staying in
*
22-42 Wake-up Speed [RPM]
Range:
Application [Applica-
dependent tion
*
dependant]
22-43 Wake-up Speed [Hz]
Range:
Application [Applica-
depend- tion
ent dependant]
*
®
is a registered Danfoss trademark
Function:
must be active before activating Warning or
Alarm
Function:
motor after a start command (digital input or
Bus) before entering Sleep Mode.
Function:
Sleep Mode. This will override any wake up
conditions.
Function:
To be used if par. 0-02 Motor Speed Unit
has been set for RPM (parameter not
visible if Hz selected). Only to be used if
par. 1-00 Configuration Mode is set for
Open Loop and speed reference is
applied by an external controller.
Set the reference speed at which the
Sleep Mode should be cancelled.
Function:
To be used if par. 0-02 Motor Speed Unit,
has been set for Hz (parameter not
visible if RPM selected). Only to be used
if par. 1-00 Configuration Mode, is set for
Open Loop and speed reference is
applied by an external controller
controlling the pressure.
Set the reference speed at which the
Sleep Mode should be cancelled.