9-4
IM WT1801-01EN
Enabling or Disabling Independent Integration (Independent
Control)
You can select whether to start, stop, and reset integration on all elements simultaneously or separately.
• OFF: Integration starts, stops, and is reset simultaneously on all elements.
• ON: Integration works differently depending on the
independent input element configuration
Independent) setting.
• When independent input element configuration is disabled
Elements whose wiring system is 1P2W are controlled separately. For elements whose wiring system is
not 1P2W, integration starts, stops, and is reset at the same time for all elements in the same wiring unit.
• When independent input element configuration is enabled
The integration of each element is controlled separately.
When independent integration and independent input element configuration are enabled and integration is
controlled separately for elements in the same wiring unit, because the elements’ integration periods differ,
the Σ functions for those elements (the functions that deal with wiring unit integration, such as the integrated
active power and apparent power functions) return errors.
Independently Integrated Elements (Element Object)
This setting is valid when independent integration is enabled.
• You can select which elements to start, stop, and reset the integration of by selecting the elements’ check
boxes.
• All ON: All elements are controlled.
• All OFF: No elements are controlled.
Even if you enable independent integration, when
independent input element configuration
is disabled,
the integration of elements in the same wiring unit is controlled simultaneously regardless of whether the
elements’ check boxes are selected.
Example:
• Elements 1, 2, and 3 are assigned to wiring unit ΣA as a three-phase, four-wire system.
• Under Element Object, the check box of element 1 is selected, but the check boxes of elements 2 and 3
are not.
If you start or stop the integration of element 1 under the above conditions, the integration of elements 2 and 3,
whose check boxes are not selected, also starts or stops.
To independently control the integration of input elements that are assigned to the same wiring unit, you must
enable independent integration and independent input element configuration.
9 Integrated Power (Watt hours)
