Danfoss VLT FC 103 Programming Manual page 133

Parameter Description
22-36 High Speed [RPM]
Range:
Size
related 4-13 RPM]
*
3 3
22-37 High Speed [Hz]
Range:
Size
related 4-14 Hz]
*
22-38 High Speed Power [kW]
Range:
Size
related kW]
*
22-39 High Speed Power [HP]
Range:
Size
related hp]
*
3.17.3 22-4* Sleep Mode
If the load on the system allows for stop of the motor and
the load is monitored, the motor can be stopped by
activating the Sleep Mode function. This is not a normal
Stop command, but ramps the motor down to 0 RPM and
stops energizing the motor. When in Sleep Mode certain
conditions are monitored to find out when load has been
applied to the system again.
Sleep Mode can be activated either from the No Flow
Detection/Minimum Speed Detection (
programmed via parameters for No-Flow Detection, see
Illustration 3.43) or via an external signal applied to one of
the digital inputs (must be programmed via the
132
Function:
[ 0 - par. To be used if 0-02 Motor Speed Unit
has been set for RPM (parameter not
visible if Hz selected).
Set used speed for the 85% level.
The 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
been set for Hz (parameter not visible
if RPM selected).
Set used speed for the 85% level.
The function is used for storing values
needed to tune No Flow Detection.
Function:
[ 0 - 0.00 To be used if 0-03 Regional Settings has
been set for International (parameter
not visible if North America selected).
Set power consumption at 85% speed
level.
This function is used for storing values
needed to tune No Flow Detection.
Function:
[ 0 - 0.00 To be used if 0-03 Regional Settings has
been set for North America (parameter
not visible if International selected).
Set power consumption at 85% speed
level.
This function is used for storing values
needed to tune No Flow Detection.
MG16H102 - VLT
®
VLT Refrigeration Drive Programming Guide
parameters for configuration of the digital inputs,
parameter group 5-1* selecting Sleep Mode).
To make it possible to use e.g. an electro-mechanical flow
switch to detect a no flow condition and activate Sleep
Mode, the action takes place at raising edge of the
external signal applied (otherwise the frequency converter
would never come out of Sleep Mode again as the signal
would be steady connected).
If 25-26, Destage at No-Flow, is set for Enabled, activating
Sleep Mode will apply a command to the cascade
controller (if enabled) to start destaging of lag pumps
(fixed speed) before stopping the lead pump (variable
speed).
When entering Sleep Mode, the lower status line in the
Local Control Panel shows Sleep Mode.
See also signal flow chart in 3.17.1 22-2* No-Flow Detection.
There are three different ways of using the Sleep Mode
function:
Illustration 3.46
1) Systems where the integrated PI controller is used for
controlling pressure or temperature e.g. boost systems
with a pressure feed back signal applied to the frequency
converter from a pressure transducer. Par. 1-00, Configu-
ration Mode, must be set for Closed Loop and the PI
Controller configured for desired reference and feed back
signals.
Example: Boost system.
must be
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FC 103