Technical documentation
Rev. 02
Reactive Factor Controller CX plus
38
switching on a step which fits more precisely to the determined need for
reactive power. The normal switching time is not observed for the step
exchange.
307
Activate step exchange
Yes/No
"
YES
": The controller tries to better reach the control target by means of
step exchange.
"
NO
": The function is deactivated.
This function is useful when steps of different sizes are available.
If all
available steps have the same power, this function should be
deactivated, because, otherwise, unnecessary switching cycles may
occur.
NOTE
: The step exchange function is always deactivated in the control
algorithms “COMBI filter”, “LIFO”, “FIFO” and progressive.
308
Step identification
Yes/No
"
YES
": Step identification is activated. Step sizes are determined
automatically during operation and are updated continuously. Defective
steps and power loss of the individual steps are identified. Manually
entered step sizes are overwritten by the automatic updating of the step
size. If the step identification is completed for a step (50 switching
operations), the original step size is set to the value of the current step
size.
The step identification can also be concluded prematurely by manually
entering the step size.
"
NO
": Step identification is deactivated. Step sizes must be entered
manually, the updating of the step sizes, the identification of defective
steps and the identification of power loss of the individual steps, however,
are active. By entering the step size, the value of the original step size is
set to the value of the current step size (entered step size).
It is necessary to enter the step sizes manually, if
a) there are rapidly changing loads in the system and the step sizes
are identified incorrectly due to this.
b) the switchgears have a delay of more than 200 ms.
NOTE
: If the step identification for a step has been completed or if the step
size was entered manually, the current step size with regard to the original
step size in % is displayed in the step database menu (INFO) for this step.
NOTE
: By switching off the step identification, the control is switched off,
set to “OFF” and locked. The setting remains locked until the current
transformer factor is entered once and at least one step size is entered
manually. Then, the control can be switched on again.
309
Lock faulty steps
Yes/No
"
YES
": If the controller cannot identify a reaction from mains after
switching a step, this step is locked after three unsuccessful switching
operations and is not used for the control anymore. Steps which were
identified as defective are flashing in the step display and are displayed as
step type "Flty" in the info and in the setup menu "100/OUt and 403".
"
NO
": Steps which are identified as faulty are not blocked and are still used
by the control. This results in unnecessary switching cycles.
NOTE
: Steps which are identified as faulty are set to the step type AUTO
and checked again every 24 hours or after a restart of the controller.
