Operating instructions
multicomp
Page 14 of 29
Version 1.00
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Configuring current transformer values:
For the compensation controller to function properly, all parameters concerning the current transformer have
to be set correctly. Primary and secondary current of the transformer have to be set (submenu Iprim. / Isec.).
These parameters can be read on the nameplate of the current transformer. In addition, the phase allocation
of the transformer has to be set correctly. In the controller, the phase (L1, L2, L3) in which the current
transformer is integrated has to be set (submenu Rot.field I). If the transformer connections are mixed up
(k and l interchanged), this can be corrected with the setting -L1, -L2 and -L3.
Setting target CosPhi:
You can ask your energy supply company for the target CosPhi, which should be set up at this point.
The target CosPhi is by default set to 0.95 inductive (see chapter Default settings).
Setting the voltage transformer parameters:
Specify the primary voltage in the U primary submenu, the secondary voltage under U secondary and the
phase allocation of the measurement voltage under Rot.field U. These settings apply to a standard network
(voltage Ph-Ph: 400V primary, 400V secondary). With measurement voltages of over 500V, the parameters
specified on the voltage transformer have to be configured, e.g. 690V / 100V, as well as the measuring mode,
e.g. L12 for the measurement voltage connection between the phases L1 and L2.
Setting the discharge time:
Checking or, if required, changing the discharge time of the capacitor stages is a very important menu item.
Possible discharge times are 0, 3, 30, 60, 300, 600, 900 sec. Please make sure that the correct value is set,
otherwise the capacitors could be damaged.
Configuring the capacitor stages:
There are two ways of configuring the capacitor stages: The stages can be configured manually or using the
learning mode.
It is important to set the stage power correctly. The stage power can be looked up on the nameplate of the
stage or the circuit diagram and then programmed manually. In this case, skip the menu item Activate learning
mode and individually enter the power value vor each stage.
If you want to Activate the learning mode, you have to make sure that all previous submenu parameters have
been set correctly.
The learning mode is activated by pressing the button
U
. Change to Yes with the button
V
and confirm with
button
X
.
The learning mode automatically sets the stage power. However, this value has to be checked after each time
the learning process is performed.
a
Caution!
If there is no measurement voltage, the learning mode menu does not
appear.
