Specifications

Comfort Reference Value – 5th Generation of STÖBER Inverters STÖBER
ANTRIEBSTECHNIK
5. Combining the Reference Values
KSW-20
5.3 Main Reference Value + Percental Reference Value
Information that you will find in
this section …
This section shows you how to parameterize an additive reference value consisting of
two components. One component references the first component as a percentage.
Main reference value + percental
reference value
To parameterize this combination proceed as shown below:
• Select the desired reference value sources in D30 and D31 (e.g., D30=0:reference
value and D31=2:preset reference value.
• Set D32 to "1:percental"
• Set D33=0:inactive.
With this parameterization, the reference value selected in D31 is related to D56. The
resulting percentage is multiplied by the main reference value and the result is added to
the main reference value (see Figure 5-4).
Example:
The main reference value is 1000 rpm which is indicated in D381. The additive reference
value supplies the value 500 rpm. The value 2000 is entered in D56.
The additive reference value as related to D56 supplies the result 500 rpm / 2000 rpm =
¼. This results in the total result of 1000 rpm + 1000 rpm x ¼ =1250 rpm. This value is
indicated in D382.
D31
D56
D30
D32=1
D33=0
+
0
1
+
1
X
D381
D382
0
0
1
1
2
2
6
7
Figure 5-4 Main reference value + percental reference value
Additive ref. val.
source
Main
ref. val.
source
Additive
ref. val.
mode
Ref. val.
after
addition
Factor
ref. val.
source
Selected
main ref. val.
Ref. val. ext.
Preset RVs
Correction RV1
n-actual
Inactive
Ref. val. ext.
Preset RVs
Fix value
Rated unit
speed