Danfoss VLT FC 103 Programming Manual page 135

Parameter Description
No Flow detection (pumps
only)
3 3
Low speed detection
External signal
Pressure/Temperature
(transmitter connected)
Output frequency
Table 3.25 Configuration Possibilities, Overview
NOTE
Sleep Mode will not be active when Local Reference is
active (set speed manually by means of arrow buttons on
the Local Control Panel). See Par. 3-13, Reference Site.
Does not work in Hand-mode. Auto set-up in open loop
must be carried out before setting input/output in closed
loop.
22-40 Minimum Run Time
Range:
10 s [0 - 600 s] Set the desired minimum running time for
*
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:
Size
related 4-11 - par.
*
4-13 RPM]
22-43 Wake-up Speed [Hz]
Range:
Size [
related 4-12 - par.
*
4-14 Hz]
134
Internal PI Controller
(1-00 Configuration Mode: [3] Process Closed Loop)
Sleep mode
Yes
Yes
Yes
Function:
the motor after a start command (digital
input or Bus) before entering Sleep Mode.
Function:
Sleep Mode. This will override any wake up
conditions.
Function:
[ par. To be used if 0-02 Motor Speed Unit has
been set for RPM (parameter not visible
if Hz selected). Only to be used if
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:
par. To be used if 0-02 Motor Speed Unit, has
been set for Hz (parameter not visible if
RPM selected). Only to be used if
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.
MG16H102 - VLT
®
VLT Refrigeration Drive Programming Guide
Wake up
Yes
No
22-44 Wake-up Ref./FB Difference
Range:
10 %
*
%]
NOTE
If used in application where the integrated PI controller is
set for inverse control (e.g. cooling tower applications) in
20-71 PID Performance, the value set in 22-44 Wake-up
Ref./FB Difference will automatically be added.
22-45 Setpoint Boost
Range:
0 [-100
% - 100
*
%]
22-46 Maximum Boost Time
Range:
60 s
*
600 s]
®
is a registered Danfoss trademark
External PI Controller or manual control
(1-00 Configuration Mode: [0] Speed Open Loop)
Sleep mode Wake up
Yes (except manual
setting of speed)
Yes
Yes
No
Yes
Function:
[0 - 100 Only to be used if 1-00 Configuration Mode is
set for Closed Loop and the integrated PI
controller is used for controlling the pressure.
Set the pressure drop allowed in percentage
of set point for the pressure (P
cancelling the Sleep Mode.
Function:
Only to be used if 1-00 Configuration Mode, is set
for Closed Loop and the integrated PI controller is
used. In systems with e.g. constant pressure
control, it is advantageous to increase the system
pressure before the motor is stopped. This will
extend the time in which the motor is stopped
and help to avoid frequent start/stop.
Set the desired over pressure/temperature in
percentage of set point for the pressure (P
temperature before entering the Sleep Mode.
If setting for 5%, the boost pressure will be
P *1.05. The negative values can be used for e.g.
set
cooling tower control where a negative change is
needed.
Function:
[0 - Only to be used if 1-00 Configuration Mode is set
for Closed Loop and the integrated PI controller
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, not waiting for the
set boost pressure to be reached.
) before
set
)/
set