31
= Key1
= Key 2
= Key 3
= Max. value or consumption = Min. value or supply
Ring buffer
For the most measured values a mean value is
calculated (please see table "Measured and
calculated values"). Mean values are marked with a
horizontal bar above the measured values. The
mean values, selected for storage in the ring buffer,
are marked by both of the arrow symbols.
For the storage in ring buffer, the following values
can be selected in menu
PRG
of the UMG505
- the
mean values
of measured values
,
- the
EMAX reset of the measuring period
and
- a part of the
energy meters
(Tx0)
The
changeable energy meters
(see table below)
can be selected with the programming software
PSW505
only for saving in the ring buffer.
For
energies,
the period between two savings is set
to one hour.
Storage duration
The more mean values are marked for saving in the
ring buffer, the shorter becomes the storage
duration. When the device is delivered, the setting
Mean values: U1, U2, U3, I1, I2, I3, P1, P2, P3
Averaging time: 15 Minutes
leads to a storage duration of about 1 year. If this
time is exceeded, the most obsolete values are
overwritten.
If various averaging times are assigned to the mean
values, more memory is required, and the storage
duration becomes shorter.
To enlarge the storage duration, the number of
saved values can be decreased, or all values should
be programmed for saving with the same averaging
time.
Attention !
A change of
- the averaging time,
- the measuring period,
- the current transformer ratio,
- the voltage transformer ratio,
- the measurement (Aron circuit) or
- the measured value selection for ring buffer
delete the ring buffer
.
The more mean values are selected for storage in
the ring buffer, the earlier the ring buffer is complete
and will be overwritten. The period of storage for the
ring buffer can be read out in the measured value
indication.
The stored measured values can be read out of the
ring buffer using the "programming- and reading out
software
PSW505
" only.
Energy meter
Fix Changeable
Real energy
without rev. run. stop T50 T51 T52 T53 T54
Consumption
T00 T01 T02 T03 T04
Supply
T30 T31 T32 T33 T34
Reactive energy
without rev. run. stop
T40 T41 T42 T43 T44
inductive
T10 T11 T12 T13 T14
capacitive
T20 T21 T22 T23 T24
Diagr. Overview of energy meters.