User's manual
PFC max 6, PFC max 12 Page 9
3.1 Display screen
PFC max devices are equipped with a 3 digits x 7 segments LCD screen. The screen has also a set of
icons, which provide information about the regulator status. The main indications are: cosφ value,
reactive power sign ( for lagging or inductive PF and for leading or capacitive PF), connected
stages and measurement of different parameters (see section 3.2)
: Lagging or
inductive power indication
: Leading or capacitive
power indication
The RUN LED (red) is ON in
normal working conditions
The x10 Ip LED shows
that the reading of current or
max. current has to be
multiplied by 10
In normal working
conditions, RUN LED (red)
is ON and cursor points
to the parameter being
displayed (Left column list)
In SET-UP mode, the RUN
LED is OFF, the cursor is
blinking and pointing to the
parameter being configured
(Right column list).
Symbols indicating the
stages which are connected
(only in RUN mode)
3.2 Measured parameters
When the instrument is in normal RUN mode, the following parameters can be displayed: cos , mains
current, THD of both mains current and mains voltage. The instrument can also display the maximum
values of mains current and voltage since the last parameters clear. The parameter being displayed can
be selected with the navigation keys and is indicated by the cursor.
3.3 Errors and ERROR messages
In case that the regulator detects a possible error, the front screen shows an error code. The possible
error codes are listed and explained in table 3-1.
Table 3-1: Possible errors and messages displayed on the screen
Load current below the threshold current, or current
transformer (CT) not connected. The threshold is 0,1A at
the secondary side of CT
Overcompensation. The regulator detects that some
stages should be disconnected but all the stages are
already disconnected.
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