Danfoss VLT Flow Drive FC 111 - Page 186

25-42 Staging Threshold
Default value: 90%
Parameter type: Range
2-setup: All setups
Conversion index: 0
Data type: u_int8
Change during operation: True
The percentage of maximum pump speed to stage on a fixed-speed pump.
Table 449: Range:
Min: 0%
Max: 100%
Default value: 90%
25-43 Destaging Threshold
Default value: 50%
Parameter type: Range
2-setup: All setups
Conversion index: 0
Data type: u_int8
Change during operation: True
The percentage of maximum pump speed to destage a fixed-speed pump.
Table 450: Range:
Min: 0%
Max: 100%
Default value: 50%
25-45 Staging Speed [Hz]
Default value: 0 Hz
Parameter type: Range
2-setup: All setups
Conversion index: -1
Data type: u_int16
Change during operation: True
The actual staging speed based on the staging threshold.
Table 451: Range:
Min: 0 Hz
Max: 400 Hz
Default value: 0 Hz
25-47 Destaging Speed [Hz]
Default value: 0 Hz
Parameter type: Range
2-setup: All setups
Conversion index: -1
Data type: u_int16
Change during operation: True
The actual destaging speed based on the destaging threshold.
Table 452: Range:
Min: 0 Hz
Max: 400 Hz
Default value: 0 Hz
4.19.4 25-5* Alternation Settings
Parameters for setting conditions for staging and destaging.
25-50 Lead Pump Alternation
Default value: [0] Off
Parameter type: Option
2-setup: All setups
Conversion index: -
Data type: u_int8
Change during operation: True
Change the lead pump so all pumps run equal time.
AU363928304090en-000101 / 130R0982186 | Danfoss A/S © 2021.07
Parameters
VLT® Flow Drive FC 111
Programming Guide