23
ANTRIEBSTECHNIK
6
9
23
KEB COMBIVERT F4-C
Name: Basis
29.01.98
6
ANTRIEBSTECHNIK
Section
Page
Date
©
KEB Antriebstechnik, 1997
All Rights reserved
Chapter
Functional Description
Special Functions
6.9.7
Unit Conversion
The KEB COMBIVERT makes available a parameter which allows the user to represent
individual units (e.g. bottles/min or litre/hour).
The source is selected with parameter ud.87. The parameters ud.88...ud.91 are for
the dimensioning of the conversion. The output is done in parameter ru.43.
6.9.7 Principle of Unit Conversion
Definition of own
Standardization
In the following part you can define your own standardization. Enter into the following
diagram
– a point A at the frequency at where display shall just indicate „0“ (in the example
10 Hz)
– a point B at the frequency where a desired value with the selected unit is
reached (in the example 50 Hz).
Frequency
Enter desired
unit
e.g. 300
Offset
A
B
10Hz
50Hz = f
B
0
0
delta f
delta Y
Y
Define
- delta f (in the example 50 Hz - 10 Hz = 40 Hz) and
- delta Y (in the example 300 - 0 = 300).
ud.87 Source
Actual frequency Setpoint frequency Actual speed
Setpoint speed
Load
1
0
2
3
4
(ud.87 + 0) ·
1500
= ru.43
4000
ud.88 Multiplier
-9999...9999
ud.90 Offset
-9999...9999
ud.91 After decimal point
0...4
ud.89 Divisor
1...9999