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UMG 96-PA / UMG 96-PA-MID / UMG 96-PA-MID+
13.15 “Drag indicator” function
The "drag indicator" function describes the three
highest average values of value types over a de-
fined period (time base).
·The average values determined can be called
up via the GridVis
®
software and via a parameter
with a time stamp.
·The period duration (time base), synchroniza-
tion and capture time can be set in the GridVis
®
software or by setting the corresponding param-
eters.
·The average value calculation is made from the
measured values of the following value types:
- Current L1
- Current L2
- Current L3
- Active power L1
- Active power L2
- Active power L3
- Active power sum (L1...L3)
- Apparent power L1
- Apparent power L2
- Apparent power L3
- Apparent power sum (L1...L3)
Period duration (time base):
Individually configurable period duration in sec-
onds for the calculation of the average values over
this period (duration of measured value recording).
If internal synchronization is selected, the average
values are recalculated after the set period of time
has elapsed.
Synchronization mode:
A synchronization determines a start time for the
calculation periods of the average values. In this
case, a synchronization is triggered:
·via the internal clock
(internal synchronization)
,
·by setting a parameter (
via Modbus
) or
·optionally via digital input 3
(external synchroni-
zation).
Capture time:
The individually configurable
Capture time
de-
scribes a time window in which an incoming
pulse synchronizes the point in time. If the device
receives a pulse outside the capture time, the
calculated average values are deleted and the
time is reset.
Note: The setting for the capture time – e.g. in
the GridVis
®
software
– describes half the time
window of the total capture time!
13.15.1 Internal synchronization
The average values are calculated after the con-
figurable period of time (time base) has expired.
The internal synchronization takes place at the full
minute if this is a multiple of the time base.
NOTE
For an
internal synchronization
, the options
Syn-
chronization via Modbus
AND
Synchronization via
digital output 3
must both be deactivated!
Fig.
Principle of synchronization
Capture time Capture time Capture time Capture time
Time base
Time base
Time base
Time of
Average value
calculation
Time of
Average value
calculation
Time of
Average value
calculation
Time of
Average value
calculation
Time
base
[min]
Sync 1
(time)
Sync 2
(time)
Sync 3
(time)
Sync 4
(time)
2
09:00:00 09:02:00 09:04:00 09:06:00
5
09:00:00 09:05:00 09:10:00 09:15:00
15
09:00:00 09:15:00 09:30:00 09:45:00
Fig.
Examples of internal synchronization with different time
bases
