Solar Supply - Weidmuller WI-GTWY-9 User Manual

WI-GTWY-9-xxx Wireless Gateway
The module may also be powered from an external 11 – 15 VDC battery supply without the need
for a "normal" supply connected to "SUP1". This external battery supply is connected to
"BAT+" and "GND" terminals. The positive lead of the external supply should be protected by a
5A fuse
BATTERY SUPPLY
11-15 VDC
Fuse 5A
.Upon failure of the normal supply, the module may continue to operate for several hours from a
backup battery. The battery charger is designed for sealed or vented lead acid batteries between 5
and 24 amphours - other types of batteries should not be used. Typically, a 5 AHr battery will
supply the WI-GTWY-9-xxx for 1 – 2 days, depending on the type of WI-GTWY-9-xxx.
On return of normal supply, the unit will recharge the battery. The maximum output of the
battery charger is 0.7A when the supply voltage is greater than 12V, and 0.3A for less than 12V.
The WI-GTWY-9-xxx monitors the power supply and provides the following internal values,
which can be mapped as I/O values:
• Power failure (I/O Reg 4309) - if the supply voltage drops below 8V, this status value is set
on, and set off again when the voltage is more than 9V. For AC Supplies, this indicates low
voltage at approximately 10 VAC, and the status is cleared when the supply voltage rises
above approximately 12VAC
• Low battery voltage (I/O Reg 4308) - this status value is set on if the battery voltage drops to
11.3, and resets off when the battery voltage is more than 11.8V.
• Battery voltage value (I/O Reg 4310) - 8 – 40VDC corresponds to hex 4000 – hex C000.
• Supply voltage (I/O Reg 4311) - 8 – 40VDC corresponds to hex 4000 – hex C000.

3.3.3 Solar Supply

A WI-GTWY-9-xxx can be powered from a solar supply using an external regulator. If a 12V
solar supply is used, the 12V battery can be connected to the battery supply connections of the
WI-GTWY-9-xxx and the WI-GTWY-9-xxx will monitor for low battery status and also battery
voltage. If a 24V solar supply is used, the 24V battery should be connected as a DC supply
(SUP1 and GND) - the supply voltage can be monitored however the "supply fail" voltage will
activate too low to be used as a battery fail status.
34
-
+
SUP1
SUP2
GND
WI-GTWY
BAT+
V1.18