Danfoss MCO 101 Manual page 39

Extended and Advanced Cascade Controller
Option
27-44 De-staging Threshold
Range:
50%* [1% – 100%]
27-45 Staging Speed (RPM)
Option:
Units: RPM
27-46 Staging Speed (Hz)
Option:
Units: Hz
27-47 De-staging Speed (RPM)
Option:
Units: RPM
Function:
De-staging Threshold is the speed in the staging ramp at which the fixed-speed pump should be
turned on. Set as a percentage [%] of maximum pump speed.
If Auto-tune Staging Settings is enabled in P27-40, P27-44 will be hidden. The actual value can be
read if P27-40 is disabled. If P27-40 is disabled, the de-staging threshold in P27-44 can be changed
manually, and the new value will then be used if P27-40 is enabled again.
When 27-30 is Enabled [1], 27-31, 27-32, 27-33, and 27-34 will be kept up to date with new au-
tomatically calculated values. If 27-31, 27-32, 27-33, and 27-34 are modified from the bus, the new
values will be used, but will also continue to be automatically tuned (modified).
When 27-40 is Enabled [1], 27-41, 27-42, 27-43, and 27-44 will be kept up to date with new au-
tomatically calculated values. If 27-41, 27-42, 27-43, and 27-44 are modified from the bus, the new
values will be used, but will also continue to be automatically tuned (modified).
Values will be recalculated and the parameters updated when staging occurs.
Function:
Staging Speed is a readout parameter that shows the actual staging speed based on the staging
threshold.
Function:
Staging Speed is a readout parameter that shows the actual staging speed based on the staging
threshold.
Function:
De-staging Speed is a readout parameter that shows the actual de-staging speed based on the de-
staging threshold.
®
MI.38.C2.22 - VLT is a registered Danfoss trademark
6 How to Program
6
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