Illustration 3.44 Flow Compensation
NOTICE
When flow compensation is used with the Pump
Controller (parameter group PC-##), the actual setpoint
does not depend on speed (flow), but on the number of
pumps cut in. See
Illustration 3.45 Number of Pumps
There are 2 methods which can be employed, depending
upon whether or not the speed at system design working
point is known.
Parameter used
Speed at
design point
KNOWN
Speed at
design point
UNKNOWN
Pump controller
Parameter AP-80 Flow Compensation
+
+
+
Parameter AP-81 Square-linear Curve Approxi-
+
+
-
Parameter AP-82 Work Point Calculation
+
+
-
Parameter AP-83 Speed at No-Flow [RPM]/
Parameter AP-84 Speed at No-Flow [Hz]
+
+
-
Parameter AP-85 Speed at Design Point [RPM]/
Parameter AP-86 Speed at Design Point [Hz]
+
-
-
parameter AP-87 Pressure at No-Flow Speed
+
+
+
Parameter AP-88 Pressure at Rated Speed
-
+
-
Parameter AP-89 Flow at Design Point
-
+
-
Parameter AP-90 Flow at Rated Speed
-
+
-
Table 3.23 Number of Pumps
AP-80 Flow Compensation
Option:
Function:
[0]
*
Disabled Setpoint compensation not active.
[1]
Enabled
Setpoint compensation is active. Enabling this
parameter allows the flow-compensated setpoint
operation.
AP-81 Square-linear Curve Approximation
Range:
Function:
100 %
*
[0 - 100 %]
NOTICE
Not visible when running in cascade.
Example 1
Adjustment of this parameter allows the
shape of the control curve to be adjusted.
0=Linear
100%=Ideal shape (theoretical).
Parameter Description
AF-600 FP
™
Programming Guide
DET-620D
03/2016 All rights reserved.
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