CARLO GAVAZZI WM50 Serie Manuel D'instructions page 20

Channel and load measurement (TCD12)
Single channel
Load
Variable selected for
advanced monitoring
Measurement management
Measurement error
If a measurement is not available or out of range, it is displayed as "EEEE" on WM50 display and as "--" on UCS. See
"Troubleshooting" on page 36
Average value calculation (dmd)
The system calculates the average value of electrical variables in a set integration interval (15 min by default). The average value
will not be available if the variable measurement is out of range. By default, the integration interval is calculated from when the
analyzer is turned on. To guarantee calculation alignment, it can be synchronized using the internal clock. In turn, the internal clock
can be synchronized with an external reference via digital input (i.e.: from the electric manufacturer's device).
Synchronization types
Synchronization
Integration interval start
type
Disabled When turned on, at the
By internal clock At the first multiple of the
integration interval, using
the internal clock as a
reference, starting from
Current
l
Current THD (up to 15th
l
harmonics)
Active/reactive/apparent
l
power
Power factor
l
Active energy
l
Voltage
l
Each phase current
l
Each phase current THD (up
l
to 15th harmonics)
Active/reactive/apparent
l
power
Power factor
l
Active energy
l
Daily minimum and
l
maximum values
Real-time minimum,
l
maximum and average
values (dmd)
displayed
At the end of
end of start-up the first
integration
At the end of
the first
integration
00:00
Note: the single channel and load variable can be selected via
UCS to manage alarms with differentiated thresholds for each
channel/ load and view daily minimum and maximum values
and real-time minimum, maximum and average values (dmd).
Minimum and maximum values are calculated only
considering valid values and not out of range values.
Note: a Modbus protocol table can be set from UCS to
customize and facilitate TCD12 variable reading. See
"Download" on page 1, "Modbus communication protocol" for
further information.
Digital input effect
First
with
synchronization
value
function
None
interval
None
interval
WM50 - Instruction manual | 26/04/2022 | CARLO GAVAZZI Controls SpA
Essential information
Example
On: at 11:28
Set integration time: 15 min
First displayed value: at 11:43 for the
11:28 to 11:43 interval
On: at 11:28
Set integration time: 15 min
First displayed value: at 11:45 for the
interval from 11:30 (first integration interval
multiple) to 11:45
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