Parameter used
Parameter
number
Speed at
Design Point
KNOWN
Speed at
Design Point
UNKNOWN
Flow Compensation
(Par 22-80)
+
+
Square-Linear Curve Approximation
(Par 22-81)
+
+
Work Point Calculation
(Par 22-82)
+
+
Speed at No Flow
(Par 22-83/84)
+
+
Speed at Design Point
(Par 22-85/86)
+
-
Pressure at No Flow
(Par 22-87)
+
+
Pressure at Rated Speed
(Par 22-88)
-
+
Flow at Design Point
(Par 22-89)
-
+
Flow at Rated Speed
(Par 22-90)
-
+
22-80 Flow Compensation
Option:
Function:
[0]
*
Disabled
[0]
Disabled
: Set-Point compensation not active.
[1]
Enabled
[1]
Enabled
:Set-Point compensation is active. Enabling this pa-
rameter allows Flow Compensated Setpoint operation.
22-81 Square-Linear Curve Approximation
Range:
Function:
100%
*
[ 0 – 100%]
Example 1:
Adjustment of this parameter allows the shape of the control
curve to be adjusted.
0 = Linear
100% = Ideal shape (theoretical).
22-82 Work Point Calculation
Option:
Function:
[0]
*
Disabled
Disabled [0]
: Work Point Calculation not active. To be used if
speed at design point is known (see table above).
[1]
Enabled
Enabled [1]
: Work Point Calculation is active. Enabling this pa-
rameter allows the calculation of the unknown System Design
Working Point at 50/60 Hz speed, from the input data set in par.
22-83/84, 22-87, 22-88, 22-89 and 22-90.
2. Parameter Description
VLT
®
AQUA Drive Programming Guide
208
MG.20.O2.02 - VLT
®
is a registered Danfoss trademark
2