DME CD PV1 Data concentrator for photovoltaic application
●In photovoltaic plants it is important to have a tool that is able to determine how efficiently the produced energy is being used. An accurate analysis requires at least two points of energy measurement, typically the energy produced by the panels and the energy absorbed by the loads. DMECDPV1 is a data concentrator that collects in a single device the measured energies and some coefficients calculated from these. The device is already programmed to handle:
◆the energy pulses from produced energy meter (input 1);
◆the energy pulses coming from the absorbed energy meter (input 2);
◆the energy pulses from the meter for imported energy from the distributor, if available;
◆the calculation of the exchanged power as the difference between the produced power and the absorbed power;
◆the connection of two groups of "non-priority" loads when granted by the available power;
◆the disconnection of “non-priority” loads not to exceed the maximum amount of power agreed with the distributor.
●They are also available two coefficients:
◆self-consumption that indicates the level of usage of the PV system;
◆the autonomy that shows the level of self-sufficiency of the PV system.
■Description
●Modular DIN-rail housing, 4U (72mm wide).
●Graphic LCD display, 128x80 pixels, white backlight, 4 grey levels.
●Membrane keyboard with 4 keys for visualization and setting.
●Easy and fast navigation.
●Texts for measures, setup and messages in 5 languages.
●8 built-in contact input channels (max 14 with expansion).
●Built-in inputs organized as 4 couples insulated between them.
●1 auxiliary AC input channel for selecting the tariff.
●Integrated RS-485 interface.
●Optical interface for a max of 3 expansion modules series EXM...
■Main functions
●Counter 1 preset to read the produced energy.
●Counter 2 preset for reading the consumed energy.
●Counter 3 preset for reading the imported energy (option).
●Calculation of average powers in the time interval of 1 minute.
●Calculation of exchanged, available and purchased power.
●Calculation of the self-consumption index.
●Calculation of the autonomy index.
●Management of a relay output for load disconnection.
●Management of two relay outputs for the connection of non-priority loads.
●Dedicated graphics pages to display the values.
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User's Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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08/04/2014 |
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I408 I GB 0414 |
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606 KB |
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