EMA90 - USER MANUAL
-44-
Warnings
To see “warnings” are available 4 pages.
The
first page shows the correct connection of the instrument: the current
transformer connection for current input and the phases sequence for voltage
input. If at least one of current transformer is inverted, the display shows
“Warning CT”, otherwise “CT OK”. If the phases sequence of voltage inputs is
inverted will appear “WARNING!”, otherwise “Phases sequence OK”. “No Info,
Please Wait” message appears during the elaboration to establish the phases
sequence. The information on phases appears only if the three phase system
voltage is higher of 10V, otherwise the display shows: “Low voltage, No Info”. If the voice of menu
Setup|General|Warnings is “Yes”, the warnings page of CTs inversion and phases sequence will be
display automatically alternatively at the default page each time that happens an inversion.
The second page shows the situation of internal battery.
If the voltage level of internal battery is lower of 2.3V on display will appear
“Battery LOW”, otherwise “Battery OK”. This page will be displayed
independently of the voice of menu Setup|General|Warnings when the
voltage level is lower of 2.3V.
Warning. If there’s no battery or its voltage level is lower than 2.3V the
instrument will lose all storing data in RAM, minimums, maximums, energy
counter, and the setup).
On the third page (Turn-Off) appears date and hour of the
last of 10 events of voltage lack on one phase at least on
measure line or the instrument shut off. On the fourth
page (Turn-On) appears the events of the voltage come
back at least of one phase or when the instrument turn
on. On both pages the three values of the right column
have the means indicated in the following table:
The number 10 will be the last event. The oldest will be the number 1. The newest event will take the
tenth position that will be free thanks to the up shift of the all others events. The oldest will be deleted.
General info
The
instrument has 2 Info page if the PF/S (Profibus port) or
ETH, ETH/S (Ethernet port) option boards are not installed: in
the first appears the information on the model, version
firmware, installed memory, the number of I/O, the type of the
second serial port installed (“no” to indicate the absence) and
the communication protocols used; in the second
appears the indication of the enabling (yes) or
disabling (no) of the options as Timebands,
Harmonics and Load Control. If one of the three
optional pages is installed, the info pages will become
three: at the two pages described before the page
with info on the option port installed will be added.
These information that identify the instrument and its
configuration are useful for eventual upgrade.
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