User's Manual

Performing Advanced Functions
3.1.1 The POWER Connector
The RTU has a POWER connector, which allows for:
• External power supply (battery or any DC source from 12 to 24 volts)
• External charge supply (either a solar panel or an AC adapter) if an internal
rechargeable battery is used
Fig. 7 illustrates the connections available at the POWER connector.
EXTPS
GND
Power
Pd1
Pd0
BATT
Shield
GND
SOLAR
Start−Jumper
to Solar Panel
to Solar Panel
Enclosure Connection
Fig. 7: A740 POWER Connector (Top View)
You might want to use the POWER connector with something other than the
standard configuration. For example, if you want to connect an external battery to
the RTU, disconnect the internal battery and use the configuration shown in Fig. 8.
EXTPS
GND
Power
Pd1
Pd0
BATT
Shield
GND
SOLAR to Solar Panel
to Solar Panel
same type as supplied by Adcon
to external Battery
Enclosure Connection
Fig. 8: A740 Connection with External Battery
If you want to use the internal battery with a different power supply (charger) than
the solar panel provided, disconnect the solar panel and use the configuration
shown in Fig. 9.
EXTPS
GND
Power
Pd1
Pd0
BATT
Shield
GND
SOLAR
Start−Jumper
ext. stabilized Power Supply
Enclosure Connection
12−24VDC, .6Amax.
Fig. 9: A740 Connection with External Power Supply
And if you want to use an external battery with a different power source (charger)
than the solar panel provided, disconnect the internal battery and solar panel and
use the configuration shown in Fig. 10.
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