Sutron Corporation X-Link Operations & Maintenance Manual, Rev 1.63 5/24/2016 pg. 12
The solar panel input with sufficient sun illuminating the panel will power the
station in situations where the battery needs to be removed from the circuit
momentarily for replacement. Long term operation without the battery
connected is not recommended and transmissions via internal Iridium or Cellular
modems may not be possible due to the regulator not being capable of supplying
the necessary current during transmissions.
o
The battery will get charged via the solar power connector.
o
The solar input will handle voltages from 16 to 22 Volts DC.
o
You may connect a power source other than a solar panel (e.g. a power
supply) as long as it conforms to the voltage specification above. Please
note that a battery is still required for long term operation and to ensure
enough current is available for reliable transmissions.
Typical stations with few sensors measuring infrequently may find a 2W or 5W
panel sufficient while stations with more frequent measurements will require a
larger 10 Watt or larger panel.
The internal solar panel charger is designed to output up to 1.5 Amps when peak
charging conditions from a solar panel are present. The Maximum battery size
recommended for this charger is a 4AHr gel cell battery. If the station requires
larger battery sizes, Sutron recommends using an external solar charger
regulator such as the Sutron model 5100-0411 or similar.
Assistance in calculating power budgets may be found here:
http://www.sutron.com/customerservice/Conversions_Calcuations/PowerBudget.htm
1.7.2.
SDI-12 Connections
SDI-12 sensors connect to terminals #12, #13 and #14 labeled as GND, SDI-12
PWR and SDI-12 Data. Because SDI-12 sensors are addressable, multiple SDI-12
sensors may connected to these terminals. (See page 78.)
1.7.3.
Tipping Bucket Connection
The tipping bucket connection is #8, labeled TB/DIN IN 2, and #9, labeled GND.
This input is compatible with a dry contact switch common to most tipping
buckets. In most circumstances it doesn’t matter which side of the switch is
connected to TB/DIN IN and GND. (See page 105.)
1.7.4.
Wind Speed Connection
The wind speed connection is #7, labeled WS/DIG IN 1. This input is compatible
with wind sensors with a 0-5 volt frequency output. Typically, the sensor will also
