CARLO GAVAZZI VMU-C EM, Instruction Manual

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VMU-C
VMU-C Instruction manual 74
Trend Variables
Active Power (system)
Reactive power (System)
kvar kvar1
Kvar2
kvar3
Active Power (system)
Reactive power (System)
Analogue variables VMU-P environmental variables (note that
disconnected environmental channels are
marked with an asterisk)
a) Graphic functions
Charts consist of an X-axis, showing day hours from 00:00 a.m. to 11:55 p.m.,
and of as many Y-axes as the number of dimensions to be shown. Each Y axis
has a scale of its own, automatically sized according to the magnitude it refers to.
To enable or disable (hide) a track, just click on the variable name (located under
the X axis). The curve is displayed or removed right away, without having to
refresh the page.
Hovering the mouse cursor over the chart area will open a window showing the
numerical value of each displayed variable.

Print chart
Clicking on the “Print” button located in the bottom right of the chart area you can
specify which printer shall be used to print the chart .
b) Historical data analysis and graphic display
By means of the calendar tool it is possible to select the desired time interval to
be displayed:
Date interval selection
Select the desired day and press “Refresh chart” button.
Note : the date field cannot be edited; date can only be selected through the
relevant calendar.