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Summary of Contents for Campbell CR-PVS1
- Page 1 Product Manual CR-PVS1 PV Soiling Loss Index RTU Revision: 04/2020 Copyright © 2017 – 2020 Campbell Scientific CSL I.D - 1205...
- Page 3 Quotations for repairs can be given on request. It is the policy of Campbell Scientific to protect the health of its employees and provide a safe working environment, in support of this policy a “Declaration of Hazardous Material and Decontamination”...
- Page 5 PLEASE READ FIRST About this manual Please note that this manual was originally produced by Campbell Scientific Inc. primarily for the North American market. Some spellings, weights and measures may reflect this origin. Some useful conversion factors: Area: 1 in...
- Page 7 • Periodically (at least yearly) check electrical ground connections. WHILE EVERY ATTEMPT IS MADE TO EMBODY THE HIGHEST DEGREE OF SAFETY IN ALL CAMPBELL SCIENTIFIC PRODUCTS, THE CUSTOMER ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER INSTALLATION, USE, OR MAINTENANCE OF TRIPODS, TOWERS, OR ATTACHMENTS TO TRIPODS AND TOWERS...
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Page 9: Table Of Contents
Table of Contents PDF viewers: These page numbers refer to the printed version of this document. Use the PDF reader bookmarks tab for links to specific sections. 1. Introduction..............1 2. Precautions ..............1 3. Initial Inspection ............1 4. Overview ..............2 5. - Page 10 Change in SLI after a cleaning event. Both modules were cleaned at a time corresponding to the record number 650......9 Tables 6-1. Solar Panel Wire Colour, Function, and CR-PVS1 Connections ..5 6-2. 110PV Wire Colour, Function, and CR-PVS1 Connections ....6...
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Page 11: Introduction
The CR-PVS1 is designed to be at the heart of an independent soiling measurement station or as an add-on peripheral to any new or existing meteorological station. It is delivered field ready and requires no programming. -
Page 12: Overview
• CR-PVS1 Quick Deploy Guide (also available at www.campbellsci.eu/cr-pvs1) Upon receipt of the CR-PVS1, inspect the packaging and contents for damage. File damage claims with the shipping company. Immediately check package contents. Thoroughly check all packaging material for product that may be concealed. Check model numbers, part numbers, and product descriptions against the shipping documents. -
Page 13: Specifications
CR-PVS1 PV Soiling Loss Index RTU FIGURE 4-1. Example applications Specifications All CR-PVS1 RTUs are tested and guaranteed to meet electrical specifications in a standard –40 to 70 °C non-condensing environment. Factory recalibration is recommended every three years. Soiling Loss Index: can detect ≈1%... -
Page 14: Short-Circuit Current Measurements
CR-PVS1 PV Soiling Loss Index RTU Short-Circuit Current Measurements Current Shunt Maximum Operating Temperature: 80 °C Shunt Accuracy: ±0.25% Communications Modbus RTU Format: RS-232, 19200 bps, 8 data bits, even parity, 1 stop bit Supported Functions: Modbus Address: Data Type:... -
Page 15: Compliance
The Quick Deploy Guide also includes the wiring and other installation and configuration information. Device Configuration Utility software is required. This can be installed from the USB sent with the CR-PVS1. It is also available for download at www.campbellsci.eu/devconfig. NOTE Download the Quick Deploy Guide at www.campbellsci.eu/cr-pvs1. -
Page 16: Operation
PV panel current dependence on irradiance level, and air mass density. The CR-PVS1 also filters out data that is classified as unstable (IEC 60904), such as data during cloud cover. A variable, Stable_Data_Count, increments when all criteria are met. -
Page 17: Effective Irradiance As Calculated From Short Circuit Current Of The Pv Modules On A Clear Sky Day
CR-PVS1 PV Soiling Loss Index RTU from the short-circuit currents. FIGURES show the filtered data based on stability conditions. In FIGURE 7-5, both modules were cleaned at record number 650. The soiling index after cleaning is 0.003 (±0.16) % on clear sky and 0.000 (±0.16) % on the variable sky conditions. -
Page 18: Effective Irradiance And Sli During ±1 Hour Of Solar Noon And Geffref > 800 W/M 22
CR-PVS1 PV Soiling Loss Index RTU FIGURE 7-3. Effective Irradiance and SLI during ±1 hour of solar noon and Geffref > 800 W/m FIGURE 7-4. Geff and SLI taken during a cloudy day with Geffref > 800 w/m during ±1 hour of solar noon... -
Page 19: Soiling Loss Index Details
CR-PVS1 PV Soiling Loss Index RTU FIGURE 7-5. Change in SLI after a cleaning event. Both modules were cleaned at a time corresponding to the record number 650. Soiling Loss Index Details In terms of quantities that can be measured directly from a PV panel, soiling loss index (SLI) is defined as the loss in the irradiance reaching the solar cells of a PV panel. -
Page 20: Maintenance
Carefully clean both panels before initiating this process. Cleaning should be completed before 11 a.m. Connect to the CR-PVS1 using Device Configuration Utility. In the Device Type list, select CR300 Series. Follow the steps shown in the right panel of the window. - Page 21 Appendix A. Glossary of Variable Names Variable Name Description RTU_Internal_Temp Panel temperature of CR-PVS1, °C RTU_Voltage Battery voltage of CR-PVS1, VDC Soiling_Loss_Index_Corrected Soiling loss index with offset correction applied, % Soiling_Loss_Index_Raw Soiling loss index without offset correction applied, % Real-time index of reference to test panel with offset correction applied, %...
- Page 23 Appendix B. Modbus Register Map Register Register High Parameter Description Start Stop Range Range Units ModbusData(1) Minute HeartBeat 40001 40002 Seconds ModbusData(2) Soiling_Loss_Index_Isc Soiling Loss Index Isc 40003 40004 –20 ModbusData(3) Soiling_Loss_Index_Geff Soiling Loss Index Geff 40005 40006 –20 ModbusData(4) IscTest IscTest, Measured short circuit current from the dirty panel 40007...
- Page 26 Campbell Scientific regional offices Australia France Thailand Location: Garbutt, QLD Australia Location: Vincennes, France Location: Bangkok, Thailand Phone: 61.7.4401.7700 Phone: 0033.0.1.56.45.15.20 Phone: 66.2.719.3399 Email: info@campbellsci.com.au Email: info@campbellsci.fr Email: info@campbellsci.asia Website: www.campbellsci.com.au Website: www.campbellsci.fr Website: www.campbellsci.asia Brazil Germany Location: São Paulo, SP Brazil...
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