14.6 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 Refe
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 as
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 settin
g of 16
fixed reference values.
14.6.1 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.
480 Fixed frequency 1 -999.99 Hz 999.99 Hz 0.00 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-over 2 67
Function / active fixed value
0 = contact open 1 = contact closed
If an optional expansion module with digital inputs is installed additional fixed fre-
quencies can be selected. In this case refer to the instruction manual of the expansion
module.
06/13 Operating Instructions ACU 161
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