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= Key 1
= Key 2
= Key 3
= Maximum or consumption = Minimum or supply
Ring buffer
For the most measured values a mean value is calculated
(please see table "Measured and calculated values").
These mean values can be selected for storage in the ring
buffer.
The mean values are marked with a horizontal bar on top
of the measured value. The mean values, selected for
storage in the ring buffer, can be called up in the menu
PRG
and are marked by the flashing of both of the arrow
symbols.
Additionally, the following
energies
can be selected for
storage in the memory:
Real energy,
Real energy consumption,
Real energy supply,
Reactive energy,
Reactive energy inductive,
Reactive energy capacitive.
Those energies with the various tariffs cannot be selected
for storage in the ring buffer. For
energies,
the period
between two savings is set to one hour.
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
PSWbasic
" only.
Press
key 3
to scroll to
the mean value indica-
tion
of voltage.
Select mean values
If you are in menu
PRG
and would like to save the mean
value of voltage L2 within the ring buffer, please proceed
as follows:
Change over to mean
value indication using
key 3
. In this example
the programming of
cur rent in the three
phases is indicated.
A
A
A
L3
L1
L2
PRG
With
key 3
you select
the voltage in phase L2.
V
V
V
L3
L1
L2
PRG
Switch on or off the
arrow symbols using
key 2
.
If the arrow symbols are
switched on, this mean
value is stored every 15
minutes in the ring buf-
fer.
V
L2
PRG
EDIT
V
L2
PRG
EDIT
Confirm selection of the
menu
PRG
using key
2, the text
SELECT
dis-
appears.
PRG
Averaging
time=15Minutes..
All three currents are pro-
grammed for storage in the
ring buffer.
Voltage L2 is not pro-
grammed for storage in
the ring buffer.
Attention!
If the averaging time, the current transformer
ratio, voltage transformer ratio, three wire or
four wire measurement or the selection of the
measured values stored in the ring buffer are
changed, the contents of the ring buffer are
deleted completely.