5
ANTRIEBSTECHNIK
6
9
5
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
t
f, U
A
U
A
50 % U/f
Param.
Adr.
min
max
default
ENTER
PROG.
R/W
Step
6.9.2
Energy Saving
Function
With the energy saving function a lowering or raising of the actual output voltage can
take place. Corresponding to the activation conditions defined with uF.6 the valid
voltage according to the V/Hz-characteristic is changed proportionally by the energy
saving level (uF.7).
Even at a value > 100 % the maximum output voltage cannot become higher than the
input voltage. The function is used for example in cyclic executed load/no-load
applications. During the no-load phase the speed is maintained, but by lowering the
voltage energy is saved.
uF.7
Energy saving function / Level
30…130 %
uF.6
Energy saving function / Activation
0
function off
1
generally on
2
at actual frequency = setpoint frequency
3
activation through programmable inputs
4
generally at rotation forward
5
generally at rotation reverse
6
rotation forward and actual freq. = setpoint freq.
7
rotation revers and actual freq. = setpoint freq.
progr. inputs (di.3…di.10) value 4 >
f
soll
f
ist
Hysteresis
Example: uF.6 = 2, uF.7 = 50 %
U
A
:
Output
voltage
Used Parameters
di.3
2903h
:
:
✔
✔
✔
0
16
1
-
adjust value 4
di.10
290Ah
uF.6
2306h
✔
✔
-
0
7
1
3
-
uF.7
2307h
✔
✔
-
0
150%
1%
70%
-
