Danfoss VLT FC 102 Programming Manual page 559

Programming Guide | VLT® HVAC Drive FC 102
25-26 Destage at No-Flow
Default value: [0] Disabled
Setup: All setups
Data type: Uint8
This parameter ensures that when a no-flow situation occurs, the fixed-speed pumps are destaged 1 by 1 until the no-flow signal
disappears. This requires that no-flow detection is active. See parameter group 22-2* No-Flow Detection. If [0] Disabled is selected, the
cascade controller does not change the normal behavior of the system.
Option Name
[0]* Disabled
[1] Enabled
25-27 Stage Function
Default value: [1] Enabled
Setup:
All setups
Data type: Uint8
If the stage function is set to [0] Disabled, parameter 25-28 Stage Function Time is not activated.
Option Name
[0] Disabled
[1]* Enabled
25-28 Stage Function Time
Default value: 15 s
Setup:
All setups
Data type: Uint16
The stage function time is programmed to avoid frequent staging of the fixed-speed pumps. The stage function time starts if [1] Enabled
is selected in parameter 25-27 Stage Function, and the variable-speed pump runs at motor speed high limit (parameter 4-13 Motor
Speed High Limit [RPM] or parameter 4-14 Motor Speed High Limit [Hz]) with at least 1 fixed-speed pump in the stop position. When the
programmed value of the timer expires, a fixed-speed pump is staged.
25-29 Destage Function
Default value: [1] Enabled
Setup:
All setups
Data type: Uint8
© 2024.10
Parameter type:
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AU430028034214en-001901 / 130R0310 |
Parameter Descriptions
Option
–
True
Option
–
True
Range, 0 - 300 s
0
True
Option
–
True
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