CR1000 Manual - Campbell Scientific

Section 10. Troubleshooting
10.5 Power Supplies
10.5.1 Overview
Power-supply systems may include batteries, charging regulators, and a primary
power source such as solar panels or ac/ac or ac/dc transformers attached to mains
power. All components may need to be checked if the power supply is not
functioning properly.
Diagnosis and Fix Procedures (p. 435) includes the following flowcharts for
diagnosing or adjusting power equipment supplied by Campbell Scientific:
• Battery-voltage test
• Charging-circuit test (when using an unregulated solar panel)
• Charging-circuit test (when using a transformer)
• Adjusting charging circuit
If power supply components are working properly and the system has peripherals
with high current drain, such as a satellite transmitter, verify that the power supply
is designed to provide adequate power. Information on power supplies available
from Campbell Scientific can be obtained at www.campbellsci.com. Basic
information is available in the appendix Power Supplies (p. 564).
10.5.2 Troubleshooting Power at a Glance
Symptoms:
Possible symptoms include the CR1000 program not executing;
Low12VCount of the Status table displaying a large number.
Affected Equipment:
Likely Cause:
Batteries, charger/regulators, solar panels, transformers
Batteries may need to be replaced or recharged; charger/regulators
may need to be fixed or recalibrated; solar panels or transformers may
need to be fixed or replaced.
Required Equipment:
Voltmeter; 5‐kΩ resistor and a 50‐Ω 1‐W resistor for the charging circuit
tests and to adjust the charging circuit voltage.
435