Learning Of The Configuration - janitza Prophi Operating Instructions Manual

Reactive Power Controller

Learning of the configuration

After installation of the
controller there is the
possibility to learn and
save the configuration
with the function
"learn".
Important requirements are:
- The discharge time for capacitors is set to 60 seconds,
when the device is delivered. For capacitors with longer
discharge times, the discharge time must be checked
and changed before using the "learn" function.
- The current transformer must be flown through by
consumer and compensation current.
- The measurement and supply voltage may not be taken
from phase to N.
- The compensation system must be ready for opera-
tion.
The learning function of the controller is devided into
two steps:
Step 1 - Learning of the connection configuration
Here the correction angle between current transformer
and measurement and supply voltage is detected.
Step 2 - Learning of the capacitor stages
Here the number of outputs and the stage power of
each stage is detected.
The following requirements are neccessary:
- The switching of a capacitor stage must cause a change
of current of at least 50mA at current input.
- The stage power of the stage to be learned must be
bigger than 1% of the measuring range of the control-
ler.
Attention!
After learning, the saved configurations must be checked,
if they are plausible.
The following actions can be carried out:
oFF - No learning.
1 - Step 1, learning of the connection configuration.
2 - Step 2, learning of capacitor stages.
3 - Step 1 + 2, learning of the connection
configuration and capacitor stages.
= Key 1
learn
= Key 2 = Key 3
Start learning
Go to symbol learn us-
ing key 1. Select action
(oFF, 1, 2, 3) with key
3. Start learning with
key 1.
The symbol learn flashes. The controller learns.
During the learning the capacitor stages are switched
for several times. The learning can only be interrupted
by switching off the power factor controller.
The duration of the learning procedure depends on the
net conditions, the number of capacitor stages and the
set discharge time for the capacitors.
When the learning
procedure is finished,
the detected correction
angle, in the example
270°, is indicated.
The learned characteristics are saved.
After 60 seconds the controller changes to automatic
mode. Pressing key 1 for 2 seconds, you reach auto-
matic mode at once.
learn
Prog
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