NOVAR 2100/2200 Operating Manual
4.3.4.8 Discharge Time for Output Set 1 / 2, No. 34
All of capacitor-character outputs are protected against early reconnection for preset discharge time
after being switched off. During this time, the control process lets such outputs off and even manual
attempts for closing such outputs are blocked.
As default,
the output set 2
parameter (see below for details) is off. Then,
the discharge time for
output set 1
displayed in the 2
nd
line is relevant only and used for all of outputs.
The discharge time for
output set 2
parameter is not displayed at all.
If
the set 2
parameter is active, two discharge times are displayed :
•
discharge time for output set 1 in line 2
•
discharge time for output set 2 in line 3
A discharge time is displayed in format “MM.SS” (minutes.seconds).
4.3.4.9 Switching Mode, No. 35
In most of applications it is recommended to let the controller to use the compensation steps during
power factor control process without any limitations. In such case, it optimizes usage of the outputs in
order to reach maximum whole compensation system lifetime.
In special cases you can force the controller to keep particular sequence of outputs' switching with
the
switching mode
parameter setting :
•
I
n
t
… (=intelligent) No limitation for the switching sequence. The controller uses the
outputs optimally. Default, recommended for most of applications.
•
C
I
r
… (=circular) In this mode the controller connects or disconnects compensation
sections in the circular fashion, which means:
•
always the output that was disconnected first (i.e. that is disconnected for the
longest time) is connected first
•
always the output that was connected first (i.e. that is connected for the longest time)
is disconnected first
This switching mode can be usually used only if compensation outputs of the same type and
power, otherwise power factor control process will not work optimally
•
L
I
n
… (=linear) In this mode the controller connects or disconnects compensation
sections in the linear fashion, which means:
•
always the lowest in order not yet connected compensation section(s) is/are
connected
•
always the highest in order connected compensation section(s) is/are disconnected
This mode is determined for harmonic filters control. It is strongly recommended not to
activate linear switching mode at standard power factor compensation applications, otherwise
quality of control process will be decreased !
The sections with non-zero reactive power only that are
not permanently connected or permanently
disconnected or used for alarm, fan or heater control
are considered compensation sections involved
in the control process ( “control sections” ). That means that for both circular and linear switching
modes, when the controller selects next sections to be switched on or off, the remaining „non-control
sections“ are simply skipped.
When selecting the linear switching mode, the AOR is disabled and cannot be launched on - the
sections' types and powers must be set manually.
44
