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Mean values
For current and power values, mean values are
generated over an adjustable time. The mean
values are marked by a horizontal bar above the
measured value.
Averaging time current (Adr.057)
The averaging times for power and current
mean values are programmed separately from
a list of seven preset averaging times.
Averaging time power (Adr.058)
The averaging times for the power mean values
are programmed separately.
Averaging time voltage (Adr.073)
Method of taking the mean
The used exponential method for taking the
mean reaches at least 95% of the measured
value after the set averaging time.
M
mean
= M
ean
- 1 + (M
meas
- M
mean
- 1) / N
M
mean
= Displayed mean value.
M
eas
= Measured value.
n
= Consecutively numbered
measured value.
N
= Number of measured values, that
shall be used for taking the mean.
Minimum and maximum values
Once per second, all measured values are
measured and calculated. For the most meas-
ured values, the minimum and maximum values
are determined.
The minimum value is the lowest value, which
was measured since the last deletion. The maxi-
mum value is the highest measured value,
which was measured since the last deletion. All
minimum and maximum values are compared to
the corresponding measured values, and
overwritten while underscoring or exceeding.
The minimum and maximum values are stored
every five minutes in an EEPROM without date
and time. In case of a breakdown of the operat-
ing voltage, only the last minimum and maxi-
mum values of the last five minutes get lost.
Delete minimum and maximum values
(Adr.008)
If a "001" is written into address 008, all mini-
mum and maximum values are deleted simulta-
neously.
An exception is the maximum value of the cur-
rent mean value. The maximum value of the
current mean value can also be deleted directly
in indication menue by long pressing key 2.
Prior to commissioning potential production
dependant contents of the energy counter and
min/max values have to be deleted.
Number
Averaging times/ Seconds
0
5
1
10
2
30
3
60
4
300
5
480
6
900 (Presetting)
Summary of Contents for UMG 96S
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