RAWS-P Remote Automated Weather Station
5.1.3 Troubleshooting, Solar Panel (part #SP10/20-LQ)
If a problem with the solar panel is suspected, the solar panel may be checked
by measuring the voltage output from the solar panel. Check the voltage with a
voltmeter connected between the two leads going to the CH100
charger/regulator “CHG” “CHG” terminals located inside the environmental
enclosure (15 VDC to 28 VDC). There must be solar radiation incident on the
panel and there must be a load connected to the solar panel. The load can be
the datalogger, other equipment, or a 75 ohm resistor capable of dissipating
solar panel power between the two leads. No voltage output implies a bad
solar panel, regulator, or cable. The magnitude of the voltage output depends
on the incident solar radiation. Check the sensor cable. Disconnect the
connector and look for damaged pins. Try connecting a substitute panel.
Obtain a Return Material Authorization (RMA) number before returning the
SP10/20-LQ to Campbell Scientific for repair.
Consult the SP10_SP20 Solar Panels manual for more
information.
NOTE
5.2 Charger/Regulator
5.2.1 General Description, 12 V Charger/Regulator (part #CH100)
The 12 Volt charger/regulator (part #CH100) is a charging regulator for 12 V
rechargeable batteries. The CH100 is connected to an external charging source
such as an unregulated solar panel (part # SP20-LQ or SP10-LQ) or a wall
charger (part #9591-QD). The CH100 charger/regulator has two functions: 1)
blocks any current flow from the battery to the solar panel, and 2) limits the
source current to the battery.
FIGURE 5.2-1. 12 Volt Charger/Regulator
12
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