National Semiconductor • SolarMagic Weather Station User Guide
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CAUTION:
Do not install the PV cell temperature sensor in direct sunlight.
Choose a PV module that will accurately model the average of the
panel temperature. Keep in mind that most PV modules on the edge
of an array are cooler because they have more air movement. After you
have chosen the correct module mark the appropriate location on the
back of the PV module to measure the PV cell temperature. This
location is typically under a PV cell and not the space between PV
cells.
For best operation, this sensor’s heat sink should be mounted flat
against the back of the solar panel. Mounting the sensor’s heat sink
over labels should be avoided if possible. A tube of silicone heat
transfer compound is provided with the sensor to ensure that the heat
sink is in proper contact with the solar panel and that the heat from
the panel is transferred efficiently to the sensor.
Apply an even coat of heat transfer compound to the surface of the
sensor as shown; making sure that the compound is a little bit higher
than the double stick tape. Use the alcohol pads provided with the
sensor to thoroughly clean the surface of the solar panel where the
sensor will be mounted. Allow this surface to dry completely before
mounting the sensor. Peel the backing from the adhesive tape and
press the sensor firmly against the solar panel. Tie the sensor cable to
the solar panel in a way that does not pull on the sensor.
4.1.10
Installing the Reference Cell/Temperature Sensor
The sensor is a four wire sensor using the red for power, black for
common/ground and orange and brown for the output signals.
WARNING:
Do Not Connect When Energized
Do not connect the sensor wire if the communications module is energized.
The sensor has to brackets with each three M16 holes. Use at least one
M16 screw and washer at each bracket.
Mount the sensor in a location that best corresponds to your solar
installation. For recommendations, please contact National
Semiconductor Technical Support.
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Summary of Contents for SolarMagic
Page 1: ...SolarMagicTM Weather Station User Guide...
Page 4: ......
Page 32: ......
Page 33: ...Appendix A Reference Diagrams 27 Appendix A Reference Diagrams...
Page 34: ...National Semiconductor SolarMagic Weather Station User Guide 28 A 1 1 Sensor Terminal Blocks...
Page 35: ...Appendix A Reference Diagrams 29 A 1 2 Communications Power Terminal Block...
