10
Table 4. Phase shift setting for supply and measuring voltage 400 V AC
6.10 Regulation to average or instantaneous power factor (_CS)
This setting defines if regulator will regulate slow contactor stages to average or instantaneous power factor. If the
set value is
on
then usage of contactor stages is affected by average power factor. If the set value is
off
then
regulation is performed only according to instantaneous power factor. In configuration mode move via button
▲, ▼
to the item
ˉCS
. After pressing of button
SET
display will show set value
on
/
oFF
/
Aut
. Via buttons
▲, ▼ it is
possible to change this value. Another pressing of button
SET
saves new value into the regulator memory.
Caution
Option
Aut
is a modification for Lithuanian market where there is not defined any area for cos
φ
(for example 0,96 ... 1)
but strict limit cos
φ
= 1. With enabled option
Aut
, controller is regulating symmetrically according to parameter
SHt
.
6.11 Averaging time for APFR (tAC)
This setting defines half-
period of average cosφ calculation. There are available four times for average cosφ
calculation (15, 30 45 and 60 minutes). Default value of period for average cosφ calculation is 30 minutes which
refers to half-period set from factory on 15 minutes. It is suitable for most of applications.
After entering selected parameter currently set value of time period will appear. Via buttons ▲, ▼ it is possible to
change this value. Another pressing of button
SET
saves new value into the regulator memory.
6.12 Recording of number of operations and maximum values (CSt)
Activation of this parameters allows the controller to save maximums (the minimum value of frequency is being
recorded as well) of measured values into to internal memory.
Monitoring of measured parameters is being done in real time but recording to non-volatile memory is done 3 times
per 24 hours. Before recording the maximum (minimum) into the memory, this value is kept in standard operating
memory. In the case that power supply is lost before recording to non-volatile memory the maximum (minimum)
values will be lost.
6.13 De-compensation steps settings (EIC)
For application where there is a need of de-compensation by reactors it is necessary enable inductive steps setting
in parameter
EIC
. If the parameter is set on yes then particular step powers can be set in inductive or capacitive
power.
De-compensation by reactor steps is possible be done in two solutions. For application where there is only
capacitive load the all steps may be based on de-compensation reactors. For application where there is inductive
