The Measurements page contains two configurable measurement lists. The buttons at the bottom of the page are used to navigate to other measurement-related pages: Phasors, Load Profile, Harmonics and Temperatures.
Only the Measurements and Phasors pages are user-configurable.
Note: The Measurements page configuration data is also used by the WHMI, that is, even if the LHMI is not used with the relay, if the measurements need to be seen on the WHMI, the Measurements page configuration must be created in Graphical Display Editor.
Adding and removing measurements
- In Page Editor, select the Measurements page and then select a measurement list by clicking it.
- In the Object Properties pane, click … on the listId row to browse the available signals.
Figure 2. Accessing the signals - In the Signal Group Selection dialog, select check boxes to add the required signals or clear them to remove any unused signals.
Figure 3. Selecting signals - Click OK.
Configuring measurement items
The measurement limits, scaling and order can be independently configured in the Object Properties pane.
Tip: Click a measurement to select the measurement item. Then click the same item again to select the measurement list.
- Set the measurement properties.
If the property value is set to "Automatic", the LHMI uses the value defined by the data model.
Figure 4. Configuring measurement items - Apply custom scaling, if needed.
- In the scaling box, define the correct value which is a coefficient applied to the measurement value. The supported scaling is linear: new_value = read_measurement_value × scaling_property + offset_property.
- In the offset box, define the offset value.
- In the unit box, define the unit (string).
- Adjust the other limit properties to better fit the scaled measurement value.
- In the order box, define custom order for the measurements, if needed. The smaller the order property, the higher the measurement's position in the measurement list.
By default, all measurement list items are arranged in alphabetical order. Modifying the order property overrides the default behavior.