13
power factor is in inductive or capacitive area.
If measuring current drops below 3 mA, controller disconnects all stages and on the display will appear " - - - - ". By button
►
it is possible move to average inductive power factor indication. At first, the display will show symbol
i_CoS
and then
after 1 second numeric value will be shown. After pressing the button
►
, the display will show symbol
ċCoS
and after 1
second it will show numeric value. Another pressing of button
►
will show
iCOS
during distribution (power supply LED is
on), followed by
cCOS
during distribution, and then will return back to instantaneous value of cos
φ
.
7.3. Apparent current
Pressing of button
▲
will move to another level - apparent current. Symbol
I_AP
will appear on the display for 1 second.
After that, the display will show effective value of apparent current on primary side of current transformer, assuming that
correct transformer ratio is set in configuration mode, under the parameter
I_tr
.
Another value in this level is current harmonic distortion factor. After pressing the button
►
, the display will show symbol
tHdI
, which will be replaced after 1 second by actual measured value. For getting information about maximum value or
erasing it, follow the same procedure as described above.
7.4. Voltage
This level has exactly the same structure as previous level for apparent current, but this time it is for network voltage.
7.5. Powers
Another level offers values of four powers. At the first position there is apparent power
P_AP
, following by active power
P_rL
and reactive power
P_rC
, respectively and the last but not least there is allowed reactive power
rC_P
. For all powers
actual measured value is available and of course also maximum measured value. Procedure of showing or erasing of all
values is the same as for previous levels.
7.6. De-compensation delay
This information shows actual remaining time (seconds) to regulation action during over-compensation. Displayed value is
decreased each second by square of true control deviation and requested power factor value.
7.7. Number of stage circuit closings
Number of stage circuit closings is divided to the 12 for PFC 12 independent levels. For the first stage, the display will show
symbol
C1_S
and after it disappears the number of first stage circuit closings will be displayed. By simultaneous pressing of
buttons
SET
and
MAN
this information can be erased. To another level, where information about second stage is, move by
pressing the button
▲.
The rest of procedure is the same as for the first stage.
7.8. System frequency
Next to the last level is system frequency
U_Fr
. Also at this level, actual value of system voltage frequency, maximum value
and minimum value are available. Showing of actual and maximum values is the same as for previous levels.
7.9. Temperature
Last level shows regulator ambient temperature
t_°C
. Both actual and maximum value are possible to be seen. Showing or
erasing these values is the same as for previous levels.
8.
Manual operation
Switching the regulator to the configuration mode and by subsequent press of button
MAN
, manual regulation of
compensation stages will be activated. The status is indicated by LED with label
manual
. On the display, symbol
St_1
will
be shown for 1 second. After that, it will be replaced by actual value, which blinking (manual mode indication). Button
▲
allows to change stage status with respecting the set discharging time and delay for stage disconnection. It means that if the
stage was disconnected, pressing the button
▲
will switch the stage on. If the stage was connected, the same button will
switch the stage off. For another stage selection press button
►
. After pressing this button, the display will show for 1 second
symbol
St_2
, representing another stage. The whole procedure is the same like for the previous stage. By pressing the button
MAN
, manual mode can be deactivated.
9.
Alarm notification
If at least one of enabled alarm events appeared, then alarm output relay will be switched on for 1 min and LED with label
alarm
will blink on the display. This LED will also blink after the alarm event disappears, until it gets cancelled by long
press of button
SET.
Alarm notification does not have any influence to regulator behaviour, except in the case when alarm is
activated by high harmonic disturbance.
The symbol of alarm sort is shown on the display after pressing the button
SET
for at least 5 seconds. Symbol of the event
