janitza UMG 103-CBM, User Manual And Technical Data

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47
"One command"
If the device receives a one-time Modbus com-
mand for synchronization outside the capture
time, the measured values accumulated up to
that point are reset for the calculation of the
average value and the time. The time is redefined
as a relative zero point and a new calculation is
performed!
The power increases with time. The command
(09:06:47) outside the capture time sets the val-
ues back to 0. A new summation of the intermedi-
ate values begins from this point on. As no further
Modbus command arrives, the calculation of the
average value is done according to the set time
(time base).
10.12 External synchronization
An external synchronization for the calculation of
the 3 highest average values is performed:
• via a Modbus command.
External synchronization scenarios:
"No command despite setting"
If there is no synchronization via a Modbus com-
mand, the measured values are stored as with an
internal synchronization - but not only at each full
minute!
Example
Maximum
value
Value Time stamp
Effective current
L1
Drag indicator 1 3.51 A 09:13:07
Effective current
L1
Drag indicator 2 2.52 A 09:08:07
Effective current
L1
Drag indicator 3 1.52 A 09:03:07
Tab.: Example of drag indicator storage with
a time stamp (with set time base of 5 min)
Example
Maximum
value
Value Time stamp
Active power
L1
Drag indicator
Consumption 1 396.73 W 09:18:47
Active power
L1
Drag indicator
Consumption 2 207.34 W 09:13:47
Active power
L1
Drag indicator
Consumption 3 80.59 W 09:08:47
Tab.: Example of drag indicator storage with
a time stamp (with set time base of 5 min)
Fig.: Principle of synchronization with “No com-
mand despite setting”
Capture time Capture time Capture time Capture time
Time base Time base Time base
Command history
Synchronization principle
Fig.: Principle of synchronization outside the capture time”
Capture time Capture time Capture time Capture time
Time base Time base Time base
Command history
Synchronization principle
Resynchronization
Relative
Zero point
Time base Time base Time base