Carlo Gavazzi UK - Features & Applications of Energy Management & Metering

Energy Management/Metering: Equipment Features & Applications

Control Solution for Solar PV Applications

Carlo Gavazzi introduces advanced solutions for the control of photovoltaic plant control: EOS Array and EOS Box.

Eos-Array is a system comprised of individual modular elements that, when interacting with one another, provide efficient local control to the solar plant.

Whether it’s a small/medium power or high power plant, you are assured there is effective information management. Eos-Box is a web server that controls and supervises the whole installation, acquiring information from Eos-Array groups, inverters, energy meters, interface protection.

The Eos-Box provides information in a quick and automatic fashion via the Internet, so the data is available wherever you are.

Main Features

EOS Box: Embedded PC for PV systems Graphical and analytical trends Alarm and events logging Statistical analysis with efficiency calculation EOS Array: Modular local control system for PV plant Up to 16 DIN modules configuration Freeware software to easy control of the configuration.

Type Eos-Array Lite

Eos-Array Lite is a combination of modules which performs mainly a current and voltage control of a photovoltaic plant. The core unit is VMU-ML which performs the local bus management of VMU-S0, VMU-P both measuring units and VMU-O output unit.

VMU-ML assigns the proper local unit address Energy Management Control solution for solar PV applications Type Eos-Array Lite automatically (up to 15 units) and gathers all the local measurements coming from VMU-S0 and VMU-P measuring units. VMU-ML can provide by means of VMU-O modules one relay output so to manage up to 1 real alarm. Housing for DIN-rail mounting, IP40 (front) protection degree.

• Modular local control system for PV plants
• Up to 17 DIN modules configuration equivalent to 280mm width
• Eos-ArrayLSoft freeware software for easy product configuration
• Eos-Array can be formed by maximum 17 units
• Eos-Array can manage in addition to VMU-ML master unit up to:

- max 1 VMU-P unit;

- max 15 VMU-S0 units;

- max 1 VMU-O units.

- max 1 VMU-

VMU-ML Master Unit

• Master communication capability
• RS485 communication port (Modbus)
• Local communication bus management up to 15 mixed VMU-S0, VMU-P and VMU-O units
• Single virtual or real alarm set-point connectable to any available variable
• Display readout: 6 DGTs
• 12 to 28 VDC power supply
• Dimensions: 1-DIN module
• Protection degree (front): IP4

Energy Management Accessories

Type Eos-Gate

The Eos-Gate is a device which allows to monitor a photovoltaic installation by means of a remote Web Portal. The Eos-Gate polls data (measurements and alarms) from a set of monitoring devices installed in the plant location and transmits those data to a remote web-server through Internet using a shared communication protocol.

Data-logging features are used to secure the communication so to not lose data.

The Eos-Gate polls data from the Carlo Gavazzi’s AC meter and from the Eos-Array/EosArray Lite string combiner DC monitoring system, so that it provides a complete AC and DC monitoring of a photovoltaic plant.

The Eos-Gate transmits data to the Fat Spaniel® Portal using a push-based technology which avoids firewall related issues. The Fat Spaniel® Portal is a web portal platform which allows the user to manage its data remotely with an easy and powerful web based user interface.

• Embedded PC with data acquisition, data logging and protocol conversion capabilities
• Internet Gateway from Eos-Array and Eos-Array Lite to Fat Spaniel® Web Platform
• Two RS485 communication ports (Modbus)
• Two Ethernet port