Sleep Mode - Danfoss VLT FC 102 Programming Manual

Programming Guide | VLT® HVAC Drive FC 102
Use this parameter if parameter 0-02 Motor Speed Unit is set to [0] RPM (parameter is not visible if [1] Hz is selected). Set used speed at
the 85% level. This function is used for storing values necessary for tuning no-flow detection.
22-37 High Speed [Hz]
Default value: Size related
Setup: All setups
Data type: Uint16
Use this parameter if parameter 0-02 Motor Speed Unit is set to [1] Hz (parameter is not visible if [0] RPM is selected). Set used speed at
the 85% level. This function is used for storing values necessary for tuning no-flow detection.
22-38 High Speed Power [kW]
Default value:
Size related
Setup: All setups
Data type:
Uint32
Use this parameter if parameter 0-03 Regional Settings is set for [0] International (parameter not visible if [1] North America is selected).
Set power consumption at the 85% speed level. This function is used for storing values necessary for tuning no-flow detection.
22-39 High Speed Power [hp]
Default value: Size related
Setup: All setups
Data type: Uint32
Use this parameter if parameter 0-03 Regional Settings is set for [1] North America (parameter not visible if [0] International is selected).
Set power consumption at the 85% speed level. This function is used for storing values necessary for tuning no-flow detection.

22-4* Sleep Mode

6.22.5
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 (must be programmed via parameters for no-
flow detection, see the signal flow-diagram in parameter group 22-2* No-flow Detection) or via an external signal applied to 1 of the digital
inputs (must be programmed via the parameters for configuration of the digital inputs, parameter group 5-1* Digital Inputs selecting
[66] Sleep Mode). Sleep mode is activated only when no wake-up conditions are present. To enable use of, for example, an electro-
mechanical flow switch to detect a no-flow condition and activate sleep mode, the action takes place at the raising edge of the external
signal applied (otherwise the drive would stay in sleep mode as the signal would be steadily connected).
If sleep mode is to be based on no-flow detection/minimum speed, select [1] Sleep Modein parameter 22-23 No-flow Function.
If parameter 25-26 Destage at No-flow is set to [1] Enabled, activating sleep mode sends a command to the cascade controller (if
enabled) to start de-staging of lag pumps (fixed speed) before stopping the lead pump (variable speed).
When entering sleep mode, the lower status line in the LCP shows Sleep Mode.
© 2024.10
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NOTICE
Parameter Descriptions
Range, 0 - par. 4-14 [Hz]
-1
True
Range, 0 - 5.50 kW
1
True
Range, 0 - 7.50 hp
-2
True
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