Campbell Scientific SP50-L/SP85-L Solar Panel - Manual (Page 22)

SP50-L/SP85-L Solar Panel
LOAD C
HARGE
LOAD CHA RGE
Terminal Strip
Adapter
Deep Cycle
Battery
WIRING DIAGRAM FOR CSI PN4386 BATTERY TERMINAL BUS
TO CHARGER’S BATTERY “+” TERMINAL
TO LOGGER OR RADIO OR OTHER LOAD’S “+” TERMINAL
TO CHARGER’S BATTERY “-” TERMINAL
TO LOGGER OR RADIO OR OTHER LOAD’S “-” TERMINAL
CHARGE
LOAD
BATTERY
POST
14 Amp FUSE
5 Amp FUSE
CHARGE
LOAD
BATTERY
POST
14 Amp FUSE
5 Amp FUSE
FIGURE 3-19. Battery terminal strip adapters for power connection to
external battery
4. Maintenance
An occasional cleaning of the glass improves the solar panel’s efficiency. If a
problem with the solar panel is suspected, the panel may be checked by
measuring the voltage output. Check the voltage with a voltmeter connected
between the two leads of the solar panel. 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
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