LOGR|Solar Data Logger

DETAILS

The LOGR|Solar Data Logger from NRG Systems is a state-of-the-art data logging solution for pre- and post-construction solar resource measurements. Leveraging decades of data logger design and manufacturing experience, LOGR|Solar features the same user-friendliness that has come to define NRG’s data logger line, optimized for today’s demanding solar applications. This advanced data logger provides the features you need to deliver premium performance at an optimal price point.  

USER-CENTRIC HARDWARE BACKED BY OVER FOUR DECADES OF INDUSTRY EXPERIENCE  

  • Five Counter channels: Simplified connectivity with a wide range of industry-standard sensors. 
  • User programmable outputs: Precise control of external power loads allows you to tailor system-level power consumption to your needs.  
  • Internal data storage: Historical real-time data can be stored at user’s choice of 90 days of 1-second data or 365 days of 1-minute data.  
  • Built-in and optional PV input: Accommodates user’s preferred method for acquiring soiling data by offering a built-in, module-based soiling solution for cost-effective soiling measurements as well as PV input to support the integration of NRG’s IEC-compliant Soiling Measurement Kit.   

BANKABLE DATA MADE EASY 

  • Straightforward configuration via local web application: Navigate to and save channel configurations, update firmware, and check basic functionality without proprietary configuration software. 
  • Flexible communication: Select the right communication option for your project, including configurable Modbus communication protocol for seamless SCADA integration and NRG Cloud integration for automated data delivery, enabling fleet-level monitoring of LOGR|Solar sites
  • Accurate, high-resolution measurements: Analog measurements are recorded at IEC-compliant 1 Hz sample rate. 
  • Firmware is backwards compatible with NRG LOGR-S Data Logger: Firmware updates are available as soon as new features are released and can also be installed on the NRG LOGR-S, extending the lifespan of LOGR-S devices while facilitating an effortless transition to LOGR|Solar.   

LOGR|Solar integrates seamlessly into NRG’s Flare Solar Resource Assessment (SRA) and Solar Resource Monitoring (SRM) Systems. The logger’s modular design can accommodate a project’s unique measurement and communication requirements, making it an ideal choice for a wide range of solar measurement applications. As always, our expert Technical Services team is available to assist with on-site and remote training, installation assistance, and more.  


Benefits

  • Modular design accommodates unique project requirements
  • Compatibility with industry-leading sensors means LOGR|Solar is flexible enough to support a range of SRA and SRM System configurations 
  • User programmable outputs optimize system-level power consumption  
  • Accurate and reliable data collection for critical measurements  
  • Backwards compatibility makes firmware updates quick and effortless 
  • Integration with NRG Cloud for automatic data delivery

SPECIFICATION

  LOGR-SOLAR (#9432) LOGR-SOLAR WITH CLOUD CONNECTIVITY (#19965)
Description
Instrument type High utility data logger and real-time sensor interface n/a
Applications Solar resource monitoring and solar resource assessment n/a
Data Collection
Sampling interval 1 Hz (IEC 61724-1 compliant) n/a
Averaging interval 1-minute (IEC 61724-1 compliant) n/a
Real time clock Internal battery-backed with time synchronization n/a
Storage medium 8 GB microSD n/a
Maximum data storage 90 days at 1 second and 365 days at 1 minute intervals n/a
Channel Capacity • Fourteen (14) analog channels (single-ended); Seven (7) differential
• Twenty-four (24) serial channels via two (2) RS-485 communication ports
• Two (2) PV Input channels (soiling measurement)
• Ten (10) calculated channels plus dedicated soiling ratio calculation
• Five (5) counter channels (two with sensor excitation)
• Three (3) outputs to control 12 V loads or relays
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Counter Channels Sensor Compatibility Compatible with a wide array of industry-standard anemometers, tipping bucket rain gauges, and other accumulator sensors
(Refer to user manual for a complete list of supported sensors)
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Analog Channels Sensor Compatibility Compatible with a wide array of sensors including, NRG meteorological sensor suite and pyranometers
(Refer to user manual for a complete list of supported sensors)
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Analog Measurement Accuracy Uncertainty (k=2):
  • 450 µV @ (-10 to +10) V
  • 61 µV @ (-1 to +1) V
  • 8.5 µV @ (-70 to +70) mV
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RS-485 Channels Sensor Compatibility Supports configurable Modbus RTU data acquisition.
(Contact NRG to discuss support for additional model types or protocols)
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Parameters recorded for each channel • Average
• Standard deviation
• Minimum/Maximum 1-sec sample
• 3-second Wind gust

Note: Statistics reported on each channel are dependent on measurement type
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Data delivery • Real-time data delivery via Modbus registers (TCP via Ethernet or RTU via RS-485)
• Scheduled delivery of historical data via FTP
• On-demand transfer of historical data via internal web server to FTP
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Security Password-protected web server access n/a
Resolution
Analog measurement resolution 24-bit signed A/D conversion n/a
Software
Type • Onboard web server for logger configuration and administration
• Modbus Demo Client to test configured unit prior to connecting to SCADA
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Configuration
User interface • Web-based user interface via Ethernet connected computing device with web browser (such as Google Chrome)
• Recessed reset button on front panel
• Audible beeper for user feedback
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Connections
Sensor wiring Integrated wiring panel featuring removable terminal blocks:
• Seven (7) dedicated analog sensor wiring ports
• Four (4) dedicated RS-485 sensor wiring ports
• Two (2) dedicated PV input ports
• Five (5) Counter input ports
• Three (3) Output ports
• Enclosure ground lug connects to earth ground with included ground cable
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Communication ports • Ethernet port for web browser, FTP, Modbus TCP (server)
• RS-485 port for Modbus RTU (server)
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Power requirements
Batteries Coin cell battery for clock backup n/a
External power input 16 to 28 V DC n/a
External solar input Contact NRG sales for accompanying backup power supply system options n/a
External power output • Constant 12 V source for powering analog sensors (50 mA per excitation port, 7 ports)
• Constant 12 V source for powering modbus sensors (1000 mA shared by three COM-A ports and additional 1000mA to COM-B port)
• Three (3) outputs to control external devices, 12 V DC (500 mA each, 1000 mA total maximum current)
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Installation
Mounting 35 mm DIN Rail n/a
Tools required • Screwdriver for wiring input terminals (included)
• Ethernet connected computing device with web browser (such as Google Chrome)
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Environmental
Operating temperature range -40 °C to 65 °C (-40 °F to 149 °F) n/a
Operating humidity range • 0 to 100% relative humidity non-condensing
• IP65 ingress protection with proper installation in NRG shelter box enclosure
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Physical
Dimensions (190.5 x 101.6 x 101.6) mm n/a
Materials
Enclosure Formed aluminum enclosure n/a