Danfoss vlt AQUA Instruction Manual page 109

®
VLT AQUA Drive
Instruction Manual
22-41 Minimum Sleep Time
Range:
10 s* [0 - 600 s]
22-42 Wake-up Speed [RPM]
Range:
0 RPM* [par. 4-11 - par. 4-13 RPM]
22-43 Wake-up Speed [Hz]
Range:
0 Hz* [par. 4-12 - par. 4-14 Hz]
22-44 Wake-up Ref./FB Difference
Range:
10%* [0-100%]
22-45 Setpoint Boost
Range:
0 %* [-100 - 100 %]
22-46 Maximum Boost Time
Range:
60 s* [0 - 600 s]
Function:
Set the desired minimum time for staying in sleep mode. This will override any wake-up conditions.
Function:
Motor Speed Unit
To be used if par. 0-02
Configuration Mode
Only to be used if par.1-00
by an external controller.
Set the reference speed at which sleep mode should be canceled.
Function:
Motor Speed Unit
To be used if par. 0-02
Configuration Mode
Only to be used if par.1-00
by an external controller controlling the pressure.
Set the reference speed at which sleep mode should be canceled.
Function:
Only to be used if par. 1-00, Configuration Mode
troller is used for controlling the pressure.
Set the pressure drop allowed as a percentage of the setpoint for the pressure (Pset) before can-
celing sleep mode.
NOTE!
If used in application where the integrated PI controller is set for inverse control
PID, Normal/Inverse Control
in par. 20-71,
tomatically be added.
Function:
Only to be used if par.1-00 Configuration Mode
is used. For example, in systems with constant pressure control, it is advantageous to increase the
system pressure before the motor is stopped. This will extend the time during which the motor is
stopped and help to avoid frequent start/stop.
Set the desired over pressure/temperature as a percentage of the setpoint for the pressure (Pset)/
temperature before entering sleep mode.
If set at 5%, the boost pressure will be Pset*1.05. The negative values can be used, for example,
for cooling tower control, where a negative change is needed.
Function:
Configuration Mode
Only to be used if par.1-00
is used for controlling the pressure.
Set the maximum time for which boost mode will be allowed. If the set time is exceeded, sleep
mode will be entered and will not wait for the set boost pressure to be reached.
®
MG.20.M5.22 - VLT is a registered Danfoss trademark
8 How to program the adjustable frequency
has been set for RPM (parameter not visible if Hz selected).
is set for open-loop and speed reference is applied
has been set for Hz (parameter not visible if RPM selected).
is set for open-loop and speed reference is applied
, is set for closed-loop and the integrated PI con-
, the value set in par. 22-44 will au-
, is set for closed-loop and the integrated PI controller
is set for closed-loop and the integrated PI controller
drive
8
8-39