CARLO GAVAZZI WM50 Serie Manuel D'instructions page 21

Essential information
Synchronization
Integration interval start
type
Via internal clock At the first multiple of the
synchronized via integration interval, using
digital input * the internal clock as a
reference, starting from
00:00, or at the first digital
Note: function only available with M F I6 06 or M F I6 R4 accessory module. A digital input must be set with synchronization
function.
From WM50: See "Settings from WM50" on page 29, sub-menu DMD.
Total demand distortion calculation (TDD)
You can set the reference factor from UCS to calculate the current TDD, meaning the maximum current demand value absorbed
by the load.
Tip: if available, indicate the maximum value between those measured, otherwise initially enter the rated load value.
Voltage asymmetry calculation
The system calculates the phase-phase and phase-neutral voltage asymmetry dividing the total of the voltage maximum and
minimum value by the system voltage. If voltages are all the same, asymmetry will be 0.
Following is the formula used:
Filter
A filter can be set to stabilize the display of measurements (both on display and transmitted to external systems).
Note: the filter is applied to all measurements in read-only mode and for data transmission, without influencing calculations of
energy consumption or intervention of alarms.
Two parameters are envisaged:
filter intervention range. Value between 0 and 100, expressed as a percentage of the full scale of the variable.
l
filter coefficient. Value between 1 and 255, where 255 is the coefficient that enables maximum stability of the measurements.
l
If the measured value is outside the set intervention range, the filter is not applied.
20 WM50 - Instruction manual | 26/04/2022 | CARLO GAVAZZI Controls SpA
displayed
value
At the end of
the first
integration
interval or at
first contact
input contact
integration
Digital input effect
First
with
synchronization
function
The internal clock
moves to the closest
set integration time
multiple starting
from 00:00
after
starts
Example
On: at 11:28
Set integration time: 15 min
CAUTION! The interval between
synchronism contacts must be an
integer multiple of the set
integration interval.
Synchronism contact: at 12:00 of the
external reference corresponding to 11:59
on the internal WM50 clock
First displayed value: at 11:45 for the
interval from 11:30 (first integration interval
multiple) to 11:45.
Note:
after synchronism contact, WM50 clock
moves to 12:00:00 and the average value is
updated with the value calculated between
11:45 and 11:59.