LOVATO ELECTRIC DME D305T2 Mode D'emploi page 3

VIEWING OF MEASUREMENTS
– The s and t buttons allow the measurement display pages to be scrolled one at a time. The current page can be recognized through the unit of measurement shown in the top part of the display.
– Some measurements may not be displayed, depending on the programming and the connection for the device (for example, if programmed for a system without neutral, the measurements relating to neutral are
not displayed).
– For every page, the button permits access to sub-pages (for example, to display the maximum and minimum values recorded for the selected measurement).
– The sub-page displayed currently is indicated at the bottom right by one of the following icons:
– IN = Instantaneous value – Current instantaneous value of the measurement, displayed by default every time the page is changed.
– HI = Highest peak – Highest value measured by the energy meter for the corresponding measurement. HIGH values are stored and preserved even in the absence of a power supply. They can be reset through a
dedicated command (see command menu).
– LO = Lowest peak – Lowest value measured by the energy meter from the moment voltage is applied. It is reset with the same command used for the HI values.
– V = verage value – Time-integrated (average) value of measurement. Permits display of a measurement with slow variations. See Integration menu.
– MD = Maximum Demand – Peak integrated value (max demand). Remains stored in non-volatile memory and can be reset with a dedicated command.
MAIN PAGE
– The main page displays the active power currently used in the system, the active power percentage with respect to the rated value for the system and the total active energy meter for the system.
– The user can choose the page and sub-page that the DME D305T2 display returns to automatically after a certain time has elapsed without the buttons being pressed.
– It is also possible to program the energy meter so that the display always remains that which was last selected.
– For the setup of these functions, see the P02 – Utility menu.
FRONT METROLOGY LED
– The red front LED pulses 10,000 times for each kWh of energy consumption, referred to the CT secondary.
– The flashing frequency of the LED provides an immediate indication of the amount of power required in a given moment.
– The duration of the flashing, the colour and the intensity of the LED comply with the standards that prescribe its use for metrological checking of the energy counter's accuracy.
Active power
measured on the
system
Total active
energy meter
Active power
percentage with
respect to the rated
value for the system
RS485
communication
active (flashing)
G
B
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