janitza UMG 103-CBM, Руководство пользователя и технические данные

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10.10 “Drag indicator” function
The "drag indicator" function describes the
three highest average values of value types
over a defined period (time base).
• The average values determined can be called
up via the GridVis® software and via a parame-
ter with a time stamp.
• The period duration (time base), synchroniza-
tion and capture time can be set in the Grid-
Vis® software or by setting the corresponding
parameters.
• The average value is calculated from the mea-
sured 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
seconds for the calculation of the average val-
ues 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.
You can optionally start a synchronization via
• the internal clock ( internal synchronization ),
• the setting of a parameter (via Modbus).
Capture time:
The individually configurable Capture time
describes 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!
Fig.: Principle of synchronization
Capture time Capture time Capture time Capture time
Time base Time base Time base
Point in time
Average value
calculation
Point in time
Average value
calculation
Point in time
Average value
calculation
Point in time
Average value
calculation
10.11 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.
INFORMATION
For an internal synchronization, the option Syn-
chronization by Modbus must be deactivated!
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
Tab.: Examples of internal synchronization with different time
bases