KMB NOVAR-1 Series, Operating Manual

Page: 22 / 77

Novar 1xxx KMB systems
22
3. Putting in Operation
3.1 First Use
The controller comes preset to default values as shown in Table 4.1.
On powerup, display test runs first. The display momentarily shows
•
type of controller (e.g.
N214 N214 N214 N214
)
•
firmware version (e.g.
1
11
1
.
2
22
2
)
•
type of measurement voltage set (
U=LN U=LN U=LN U=LN
or
U=LL U=LL U=LL U=LL
)
•
metering current transformer secondary side nominal value set (
I=5A
I=5A I=5A
I=5A
or
I=1A
I=1A I=1A
I=1A
)
If the measurement voltage connection is correct, the automatic connection configuration detection
process starts.
If no measurement voltage is detected,
U=0 U=0 U=0 U=0
will flash on the display
.
3.2 Automatic Connection Configuration Detection Process
The controller’s default measurement voltage and current connection parameters are set as follows:
•
type of measurement voltage set to phase voltage (“LN”, parameter 15)
•
method of connection of U and I not defined (parameter 16)
•
compensation system nominal voltage U
NOM
set to 230 V (parameter 18)
If the method of connection is not defined, the controller cannot evaluate instantaneous power factor
and this condition is indicated by both trend LEDs flashing simultaneously. In such an event, the
controller carries out automatic connection configuration detection process.
For the controller to be able to carry out this automatic connection configuration detection process, the
following conditions must be met:
•
controller operation is not disabled (i.e. the Manual LED is dark)
•
controller is in the control mode, i.e. the numeric display mode is Measurement
•
measurement voltage of the minimum value required is connected
If meeting the three above conditions, the controller starts the automatic connection configuration
detection process.
The process may have up to seven steps. The controller makes four measuring attempts in each step
in which it consecutively connects and disconnects sections 1 through 4. It, at the same time,
assumes that power factor capacitors are connected to at least two of the sections (if any choke
connected to sections 1 through 4, detection process fails). The two following messages are shown,
one after another, in each measurement attempt on the numerical display: