Danfoss VLT Series Operating Instructions Manual page 32

1 Extended and Advanced Cascade Controller
Option
1
NB!
Not used with star/delta controlled pumps.
27-43 Staging Threshold
Range:
90%* [1 – 100%]
27-44 De-staging Threshold
Range:
50%* [1 – 100%]
32
Function:
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.
When 27-40 is Enabled [1], 27-43, and 27-44 will be kept up to date with new automatically cal-
culated values. If 27-43, and 27-44 are modified from the bus or LCP, then the new values will be
used, but will continue to be automatically tuned.
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.
When 27-40 is Enabled [1], 27-43, and 27-44 will be kept up to date with new automatically cal-
culated values. If 27-43, and 27-44 are modified from the bus or LCP, then the new values will be
used, but will continue to be automatically tuned.
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MI.38.C3.02 - VLT is a registered Danfoss trademark
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VLT Operating Instructions