3-phase power measurement terminals (WAGO-module -494/495)

3-phase power measurement terminals are used to record and measure electrical data and characteristic values of a three-phase supply network.

Before use, these terminals must be parameterized in order to adapt them to the supply network and to determine which data and characteristics are to be recorded in ibaPDA.

Parameterization is carried out conveniently in ibaPDA.

Note

Maximum number of power measurement terminals The maximum number of power measurement terminals on an ibaW-750 device is not normally restricted. The maximum number is based on the usual bus terminal limitation and the terminal bus supply, see chapter Main data, and on the update times of the process data of the terminal and the measured values in ibaPDA. Inrush current Even if the current consumption of a power measurement terminal specified in the technical data does not indicate an undersupply of the system, it is nevertheless recommended not to use more than six power measurement terminals without an additional potential supply (with bus power supply unit, e.g. 750-613) due to the higher inrush currents of the power measurement terminals. The following generally applies to the update times of the measured values: Since the measured values are retrieved from the terminals serially via the K-bus, the update time of the measured values in ibaPDA depends on the number of values to be transmitted. The more values are to be transmitted, the longer the K-bus cycle time takes. See chapter Cycle times of the K-bus. However, the update time also depends on the update time of the process data in the terminal. See chapter "Process data update" in the original documentation for the WAGO terminal blocks.

Other documentation
	For a detailed description of the single WAGO terminals with information on pin assignment, data format, measured value collection and process data update, please refer to the original WAGO documentation. Data sheets and documentations for WAGO components are available for download at www.wago.com.

Note

Restrictions when operating with ibaW-750 The scope of functions is limited when operating with ibaW-750 compared to the guaranteed scope of functions of WAGO: Only the measured values of the AC measured value collections are transmitted. Measured values of the harmonic analyses (harmonic measured values) for both terminal types, but also the DC measured values for the WAGO750-494 terminal, are omitted.

If one of the two terminals is added manually in the I/O manager, two basic types are available for selection:

• 3-Phase Power Measurement Module 480V

• 3-Phase Power Measurement Module 690V

Selection of basic types

If the terminal is detected via automatic detection or the manually added terminal is applied in the I/O Manager, the corresponding terminal type is also updated.

Terminal in the module tree

In addition to the detection of the terminal type, the firmware and hardware versions are also detected and displayed in the General tab.

Via <Refresh> you can also read this information directly from the terminal at any time.

According to the detected terminal type, the input dialog is automatically adjusted.

Parameterization using the example of terminal 750-494/000-001

Three "WagoPMM" modules with corresponding assigned signals are available below the terminal:

The special feature of the "WagoPMM Power" module is that it can be used for a phasor view.