Ac Supply; Dc Supply - Weidmuller WI-GTWY-9 User Manual

WI-GTWY-9-xxx Wireless Gateway
12 – 24 volts AC RMS or 9 – 30 volts DC at the "supply" terminals, or
10.8 –15 volts DC at the "battery" terminals.
The power supply should be rated at 1.5 Amps and be CSA Certified Class 2. For use in Class 1
Div 2 explosive areas (USA/Canada), the power supply must be approved for Class 1 Div 2 use.
Note: Connect module to the same ground/earth point as the antenna mounting to avoid
differences in earth potential during voltage surges. The modules need an earth connection for
the internal surge protection to be effective.
For licensed 105U units with RF power above 2W, the unit needs to be powered from
the 12V "Battery" terminals with a power supply of at least 2A rating. Alternately, the
unit can be powered via the SUP1 / SUP2 terminals, provided a backup battery is
connected to the "Battery" terminals to supply the inrush current for the radio transmitter.
This is not required for units with radio power less than 2W.

3.3.1 AC Supply

The AC supply is connected to the "SUP1" and "SUP2" terminals as shown below. The AC
supply should be "floating" relative to earth.
Power
12 – 24 VAC
Supply
AC Out
Optional Battery
Fuse 5A

3.3.2 DC Supply

For DC supplies, the positive lead is connected to "SUP1" and the negative to "GND". The
positive side of the supply must not be connected to earth. The DC supply may be a floating
supply or negatively grounded.
Power
9 – 30 VDC
Supply
DC Out
Optional Battery
Fuse 5A
-
+
_
+
-
+
SUP1
SUP2
GND
WI-GTWY
BAT+
9-xxx
GND
SUP1
SUP2
GND
WI-GTWY
BAT+
9-xxx
V1.18
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