Danfoss VLT Flow Drive FC 111 Programming Manual page 171

VLT® Flow Drive FC 111
Programming Guide
Table 398: Range:
Min: 0%
22-45 Setpoint Boost
Default value: 0%
Conversion index: 0
Only to be used if parameter 1-00 Configuration Mode is set for [3] Closed loop and the integrated PI controller is used. In systems
with for example, constant pressure control, it is advantageous to increase the system pressure before the motor is stopped. This
increase extends the time the motor is stopped and helps to avoid frequent start/stop. Set the required overpressure/overtempera-
ture in percentage of setpoint for the pressure (P
sure is P x1.05. The negative values can be used for cooling tower control where a negative change is needed.
set
Table 399: Range:
Min: -100 %
22-46 Maximum Boost Time
Default value: 60 s
Conversion index: 0
Only to be used if parameter 1-00 Configuration Mode is set for [3] Closed loop and the integrated PI controller is used for controlling
the pressure. Set the maximum time for which boost mode is allowed. If the set time is exceeded, the drive enters the sleep mode
without waiting for the set boost pressure to be reached.
Table 400: Range:
Min: 0 s
22-47 Sleep Speed [Hz]
Default value: 0
Conversion index: -1
Set the speed below which the drive goes into sleep mode.
Table 401: Range:
Min: 0
22-48 Sleep Delay Time
Default value: 0 s
Conversion index: 0
Set the delay time that the motor waits before entering sleep mode when the condition to enter sleep mode is met.
Table 402: Range:
Min: 0 s
22-49 Wake-Up Delay Time
Default value: 0 s
Conversion index: 0
Set the delay time that the motor waits before waking up from sleep mode when the condition for wake-up is met.
Danfoss A/S © 2021.07
Max: 100%
Parameter type: Range
Data type: int8
)/ temperature before entering the sleep mode. If setting for 5%, the boost pres-
set
Max: 100 %
Parameter type: Range
Data type: u_int16
Max: 600 s
Parameter type: Range
Data type: u_int16
Max: 400.0
Parameter type: Range
Data type: u_int16
Max: 3600 s
Parameter type: Range
Data type: u_int16
Default value: 10%
2-setup: All setups
Change during operation: True
Default value: 0%
2-setup: All setups
Change during operation: True
Default value: 60 s
2-setup: All setups
Change during operation: True
Default value: 0
2-setup: All setups
Change during operation: True
Default value: 0 s
2-setup: All setups
Change during operation: True
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Parameters