Campbell CH201, Product Manual

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6.3 Connect to data logger 11
6.4 (Optional) Connect to data logger for SDI-12 or RS-232 communications 12
6.5 Turn on power source 12
6.6 Turn on CH201 12
6.7 (Optional) Configure using Device Configuration Utility 12
6.1 Connect to power source
DANGER:
Although the power supply and battery are low voltage, they can heat a metal ring,
watchband, or bracelet enough to burn skin or melt metal when shorted. Remove rings,
watches, or bracelets before hooking up power and connecting a battery.
Unlike the CH200, the CH201 has two DC inputs instead of one AC and one DC input. A solar
panel or AC-to-DC converter can connect to either input terminal. If both CH201 inputs are
connected to power sources, the power source with the highest voltage will supply power to the
CH201. Therefore, two solar panels can face different directions to allow the solar panel facing
the most direct sunlight to power the CH201.
Toggle the power supply switch to Off before connecting power to the CH201.
NOTE:
The switch on the CH201 only controls power going to the 12V terminals. The battery is
continuously charged regardless of the switch position when charging voltage is present.
6.1.1 Solar panel
WARNING:
To prevent sparking while wiring the solar panel, lay the solar panel face down on its packing
box or cover it with something to block the sunlight while wiring up the panel.
Connect the black (negative) wire from the solar panel to the G terminal that is adjacent to the
DC In 1 or DC In 2 terminal. Connect the red (positive) wire from an unregulated solar panel to
the DC In 1 or DC In 2 terminal. See
FIGURE 6-2 (p. 11).
CH201 12V Charging Regulator 10