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KFU 2-/4-
139
13.6
Fixed reference values
The fixed reference values are to be parameterized as fixed frequencies or fixed per-
centages according to the configuration and function.
The signs of the fixed reference values determine the direction of rotation. A positive
sign means a clockwise rotation, a negative sign means an anticlockwise rotation.
The direction can only be changed via the sign if the
Reference frequency
source
475
or
Reference percentage source
476
is parameterized to an operation
mode with sign (+/-). The direction of rotation can also be stated with the digital
signal sources assigned to the parameters
Start clockwise
68
and
Start anti-
clockwise
69
.
The fixed reference values are to be parameterized in four data sets and are assigned
to further sources via the reference value channel. The use of the functions
Data set
change-over 1
70
and
Data set change-over 2
71
thus enables the setting of 16
fixed reference values.
13.6.1 Fixed
Frequencies
The four fixed frequencies define reference values which are selected via the
Fixed
frequency change-over 1
66
and
Fixed frequency change-over 2
67
. The
Reference
frequency source
475
defines the addition of the various sources in the reference
frequency channel.
Parameter
Settings
No. Description
Min.
Max.
Fact.
sett.
480 Fixed frequency 1
-999.99 Hz
999.99 Hz
0.00 Hz
481 Fixed frequency 2
-999.99 Hz
999.99 Hz
10.00 Hz
482 Fixed frequency 3
-999.99 Hz
999.99 Hz
25.00 Hz
483 Fixed frequency 4
-999.99 Hz
999.99 Hz
50.00 Hz
By combining the logic states of the fixed frequency change-over modes 1 and 2,
fixed frequencies 1 through 4 can be selected:
Selection of fixed frequencies
Fixed frequency
change-over 1
66
Fixed frequency
change-ove
r
2
67
Function / active fixed value
0
0
Fixed frequency 1
480
1
0
Fixed frequency 2
481
1
1
Fixed frequency 3
482
0
1
Fixed frequency 4
483
0 = contact open
1 = contact closed
Note:
If an optional expansion module with digital inputs is installed additional
fixed frequencies can be selected. In this case refer to the instruction man-
ual of the expansion module.